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['Hecker, F.', 'Hirsch, A.', 'Moritzer, E.']
2021-12-07T17:14:26Z
2021-12-07T17:14:26Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90724', 'http://dx.doi.org/10.26153/tsw/17643']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['arburg plastic freeforming', 'APF', 'residence time', 'material degradation']
Investigation and Modeling of the Residence Time Dependent Material Degradation in the Arburg Plastic Freeforming
Conference paper
https://repositories.lib.utexas.edu//bitstreams/8d783335-c5f5-4d04-aef9-da5a808fbf06/download
University of Texas at Austin
The Arburg Plastic Freeforming (APF) is an additive manufacturing process with which three-dimensional, thermoplastic components can be produced layer by layer. One disadvantage of the APF is the long residence time of the molten material in the plasticizing unit compared to conventional injection moulding. The dosing ...
null
null
null
null
null
null
['Kigure, T.', 'Yamauchi, Y.', 'Niino, T.']
2023-03-30T16:34:57Z
2023-03-30T16:34:57Z
2022
Mechanical Engineering
null
['https://hdl.handle.net/2152/117705', 'http://dx.doi.org/10.26153/tsw/44584']
eng
2022 International Solid Freeform Fabrication Symposium
Open
laser sintering
Investigation into effect of beam defocusing in low temperature laser sintering of PEEK
Conference paper
https://repositories.lib.utexas.edu//bitstreams/ba763f40-3249-4e23-bc77-c8d7f82dff67/download
null
Laser sintering of PEEK with the same powder bed temperature as PA12, which is lower than recrystallization temperature of PEEK, has been achieved at pervious study. However, the process at low bed temperatures requires a greater energy supply to melt the material, and it increases the risk of thermal decomposition....
null
null
null
null
null
null
['Kigure, Takashi', 'Yamauchi, Yuki', 'Niino, Toshiki']
2021-12-01T23:29:59Z
2021-12-01T23:29:59Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90656', 'http://dx.doi.org/10.26153/tsw/17575']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['laser sintering', 'PEEK', 'powder bed temperature']
Investigation into Laser Sintering of PEEK using Commercially Available Low Powder Bed Temperature Machine
Conference paper
https://repositories.lib.utexas.edu//bitstreams/d03c00ec-c67f-4229-aa4b-99421507a10c/download
University of Texas at Austin
Polyetheretherketone (PEEK) is one of the highest performance plastics in terms of heat and chemical resistance and mechanical strength. Laser sintering of PEEK requires high powder bed temperature above 300℃, and this pushes up machine price and pulls down powder recycle rate which leads to high material cost. The aut...
null
null
null
null
null
null
['Shrestha, Subin', 'Cheng, Bo', 'Chou, Kevin']
2021-10-26T18:21:34Z
2021-10-26T18:21:34Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89550
eng
2016 International Solid Freeform Fabrication Symposium
Open
['effective thermal conductivity', 'electron beam additive manufacturing', 'marangoni effect', 'thermo-fluid model']
An Investigation into Melt Pool Effective Thermal Conductivity for Thermal Modeling of Powder-Bed Electron Beam Additive Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/3c64ef28-ed0b-4403-ad5d-f18c3e7ab412/download
University of Texas at Austin
In this study, the effective thermal conductivity of a melt pool in the powder-bed electron beam additive manufacturing (EBAM) process was investigated using a numerical technique. Although a thermo-fluid model is preferred to predict the melt pool flow, computational cost is high. The alternative is to use an effectiv...
null
null
null
null
null
null
['Zhang, Shanshan', 'Lane, Brandon', 'Whiting, Justin', 'Chou, Kevin']
2021-11-11T16:53:29Z
2021-11-11T16:53:29Z
2018
Mechanical Engineering
null
['https://hdl.handle.net/2152/90248', 'http://dx.doi.org/10.26153/tsw/17169']
eng
2018 International Solid Freeform Fabrication Symposium
Open
['laser powder-bed fusion', 'laser flash', 'inverse method', 'thermal properties']
An Investigation into Metallic Powder Thermal Conductivity in Laser Powder Bed Fusion Additive Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/3acdc126-01d7-4a74-852a-263ef586a701/download
University of Texas at Austin
This study investigates the thermal conductivity of metallic powder in laser powder-bed fusion (LPBF) additive manufacturing. The intent is to utilize a methodology combining laser flash testing, finite element (FE) heat transfer modeling, and an inverse method to indirectly measure the thermal conductivity of nickel-b...
null
null
null
null
null
null
['Chen, Peng', 'Wen, Shifeng', 'Yan, Chunze', 'Liu, Jie', 'Shi, Yusheng']
2021-11-11T16:08:35Z
2021-11-11T16:08:35Z
2018
Mechanical Engineering
null
['https://hdl.handle.net/2152/90230', 'http://dx.doi.org/10.26153/tsw/17151']
eng
2018 International Solid Freeform Fabrication Symposium
Open
['additive manufacturing', 'AM', 'selective laser sintering', 'SLS', 'polyamide 6', 'PA6', 'crystalline structure']
Investigation into the Crystalline Structure and sub-Tpm Exotherm of Selective Laser Sintered Polyamide 6
Conference paper
https://repositories.lib.utexas.edu//bitstreams/03af3fe5-e3eb-46ae-9b69-0a49e0fbffad/download
University of Texas at Austin
Selective Laser Sintering (SLS) has achieved a wide acceptance for direct manufacture of complex functional components. However, the performance of SLS part still needs to be improved, in which the crystalline structure plays an important role. Every crystalline form has specific properties, and the whole material beha...
null
null
null
null
null
null
['Egodawatta, A. K.', 'Harrison, D. K.', 'De Silva, A. K. M.', 'Haritos, G.']
2020-02-14T14:54:18Z
2020-02-14T14:54:18Z
2004
Mechanical Engineering
null
['https://hdl.handle.net/2152/79982', 'http://dx.doi.org/10.26153/tsw/7007']
eng
2004 International Solid Freeform Fabrication Symposium
Open
Rapid Manufacturing
An Investigation into the Effect of the Shell on SALM Processed Parts
Conference paper
https://repositories.lib.utexas.edu//bitstreams/936941ab-2ac1-469a-a7ba-82b33693c06e/download
null
Shell Assisted Layer Manufacturing (SALM) is a novel process for rapid prototyping/ tooling/ manufacture (RP/RT/RM) which is presently undergoing feasibility studies. SALM is based on layered manufacturing technology (LMT). Initially it develops the shell (boundaries) of a selected layer using a technique similar to fu...
null
null
null
null
null
null
['Saleh, Naguib', 'Mansour, Saeed', 'Hague, Richard']
2019-10-23T15:20:28Z
2019-10-23T15:20:28Z
2002
Mechanical Engineering
null
['https://hdl.handle.net/2152/76759', 'http://dx.doi.org/10.26153/tsw/3848']
eng
2002 International Solid Freeform Fabrication Symposium
Open
Rapid Manufacturing
Investigation Into the Mechanical Properties of Rapid Manufacturing Materials
Conference paper
https://repositories.lib.utexas.edu//bitstreams/59f8a631-503d-4abd-a5a4-7c97b8525122/download
null
During the past few years, there has been a move to convert Rapid Prototyping (RP) processes into Rapid Manufacturing (RM) machines to produce end-use parts for different industries. However, in order to make Rapid Manufacturing possible, there is a need for designers to have comprehensive information relating to the m...
This project is funded by the UK Engineering and Physical Science Research Council (EPSRC).
null
null
null
null
null
['Zhao, Xiayun', 'Rosen, David W.']
2021-10-12T20:48:09Z
2021-10-12T20:48:09Z
2014
Mechanical Engineering
null
['https://hdl.handle.net/2152/88737', 'http://dx.doi.org/10.26153/tsw/15671']
eng
2014 International Solid Freeform Fabrication Symposium
Open
['Exposure Controlled Projection Lithography', 'direct metal deposition', 'process control', 'advanced control', 'backstepping control', 'mask projection stereolithography', 'evolutionary cycle-to-cycle', 'adaptive neural network']
Investigation of Advanced Process Control Methods for Exposure Controlled Projection Lithography
Conference paper
https://repositories.lib.utexas.edu//bitstreams/59c73655-69bd-49fb-94d3-0b8056ee3731/download
University of Texas at Austin
The DMD based Exposure Controlled Projection Lithography (ECPL) process has promising applications in fabrication of microfluidics and micro optics components. Unlike a conventional layer-stacking projection stereolithography process, ECPL cures a 3D feature by projecting radiation through a stationary, transparent sub...
null
null
null
null
null
null
Yang, Li
2021-11-04T19:18:33Z
2021-11-04T19:18:33Z
2017
Mechanical Engineering
null
['https://hdl.handle.net/2152/90007', 'http://dx.doi.org/10.26153/16928']
eng
2017 International Solid Freeform Fabrication Symposium
Open
['3D periodic cellular structure', 'uniaxial stress', 'anisotropy', 'investigation', 'mechanical property']
An Investigation of Anisotropy off 3D Periodic Cellular Structure Designs
Conference paper
https://repositories.lib.utexas.edu//bitstreams/e797c20d-57d0-470b-92c0-043400e13a30/download
University of Texas at Austin
In the design of periodic cellular structures, there exist various isotropic unit cell designs that possess identical theoretical mechanical properties along three or multiple principal symmetry directions. Although such definition of “isotropy” differs from the traditional definition that is used for solid materials, ...
null
null
null
null
null
null
['Li, Longmei', 'Sun, Qian', 'Bellehumeur, Celine', 'Gu, Peihua']
2019-10-24T18:00:03Z
2019-10-24T18:00:03Z
2002
Mechanical Engineering
null
['https://hdl.handle.net/2152/77411', 'http://dx.doi.org/10.26153/tsw/4500']
eng
2002 International Solid Freeform Fabrication Symposium
Open
FDM Process
Investigation of Bond Formation in FDM Process
Conference paper
https://repositories.lib.utexas.edu//bitstreams/6c824d90-1f1b-49d0-a860-f0bf7e007233/download
null
FDM process fabricates prototypes by extruding a semi-molten filament through a heated nozzle onto a platform. The semi-molten material solidifies with the neighboring material diffusely after deposition. The bonding quality among ABS filaments in FDM2000 process determines the integrity and mechanical property of resu...
null
null
null
null
null
null
['Aduba, Donald C. Jr.', 'Feller, Keyton D.', 'Williams, Christopher B.']
2021-11-04T20:47:25Z
2021-11-04T20:47:25Z
2017
Mechanical Engineering
null
['https://hdl.handle.net/2152/90024', 'http://dx.doi.org/10.26153/16945']
eng
2017 International Solid Freeform Fabrication Symposium
Open
['ceramic', 'stereolithography', 'sintering', 'shrinkage', 'anisotropy', 'build orientation', 'scaffold', 'additive manufacturing']
An Investigation of Build Orientation on Shrinkage in Sintered Bioceramic Parts Fabricated by Vat Photopolymerization
Conference paper
https://repositories.lib.utexas.edu//bitstreams/1f080c58-212a-472c-b271-aa347030ffa9/download
University of Texas at Austin
In this work, a vat photopolymerization (VP) additive manufacturing process fabricated bioceramic cuboids at different build orientations to investigate their effects on post-sintering shrinkage and associated physical properties. A suspension of β-tricalcium phosphate (TCP) in Autodesk PR 57 commercial photopolymer re...
null
null
null
null
null
null
['Yan, Lei', 'Hill, Leon', 'Newkirk, Joseph W.', 'Liou, Frank']
2021-11-04T15:36:40Z
2021-11-04T15:36:40Z
2017
Mechanical Engineering
null
['https://hdl.handle.net/2152/89988', 'http://dx.doi.org/10.26153/tsw/16909']
eng
2017 International Solid Freeform Fabrication Symposium
Open
['build strategy', 'processing parameters', 'mechanical properties', 'Ti-6Al-4V', 'hybrid manufacturing', 'design of experiment']
Investigation of Build Strategies for a Hybrid Manufacturing Process Progress on Ti-6Al-4V
Conference paper
https://repositories.lib.utexas.edu//bitstreams/f58b95fb-7f96-4479-abbb-511f12517925/download
University of Texas at Austin
The various processing parameters of a hybrid manufacturing process, including deposition and machining, is being investigated with a Design of Experiment (DoE). The intent was to explore the effect of different build strategies on the final part’s Vickers hardness, tensile test, fatigue life, and microstructure. From ...
null
null
null
null
null
null
['Yap, Y.L.', 'Dikshit, V.', 'Lionar, S.P.', 'Yang, H.', 'Lim, J.C.', 'Qi, X.', 'Yeong, W.Y.', 'Wei, J.']
2021-10-27T21:52:50Z
2021-10-27T21:52:50Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89628
eng
2016 International Solid Freeform Fabrication Symposium
Open
['fiber reinforced composites', 'multi-material 3D printing', 'inkjet printing']
Investigation of Fiber Reinforced Composite Using Multi-Material 3D Printing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/c4d83c0f-f506-42aa-9cea-b890441e6f39/download
University of Texas at Austin
Fiber reinforced composite materials have been commonly fabricated by laying and curing the stiff and high strength fibers within tough matrix to enhance the elastic modulus. The strength and elasticity of the fiber reinforced polymers are dependent on the intrinsic mechanical properties of matrix and fiber, the fiber ...
null
null
null
null
null
null
['Francis, Romy', 'Newkirk, Joseph W.', 'Liou, Frank']
2021-10-13T19:24:00Z
2021-10-13T19:24:00Z
2014
Mechanical Engineering
null
['https://hdl.handle.net/2152/88767', 'http://dx.doi.org/10.26153/tsw/15701']
eng
2014 International Solid Freeform Fabrication Symposium
Open
['Friction Stir Processing', 'Laser Metal Deposition', 'Ti-6Al-4V', 'grain size', 'surface modification']
Investigation of Forged-Like Microstructure Produced by A Hybrid Manufacturing Process
Conference paper
https://repositories.lib.utexas.edu//bitstreams/ea8a7d03-aa7e-4be1-9e62-9ed144b70d1e/download
University of Texas at Austin
Laser Metal Deposition (LMD) is an additive manufacturing technique for manufacturing complex near net shaped components. The grain size of the typical deposition microstructure in case of Ti-6Al-4V can range between 100µm-600µm, which is much larger than that of forged-like microstructures. Friction Stir Processing (F...
null
null
null
null
null
null
['Zekovic, Srdja', 'Dwivedi, Rajeev', 'Kovacevic, Radovan']
2020-03-05T18:47:17Z
2020-03-05T18:47:17Z
9/14/06
Mechanical Engineering
null
['https://hdl.handle.net/2152/80141', 'http://dx.doi.org/10.26153/tsw/7162']
eng
2006 International Solid Freeform Fabrication Symposium
Open
Laser-Based Direct Metal Deposition
An Investigation of Gas-Powder Flow in Laser-Based Direct Metal Deposition
Conference paper
https://repositories.lib.utexas.edu//bitstreams/b186b684-fd03-4d71-862a-3e11beecbd4e/download
null
Laser-Based Direct Metal Deposition (LBDMD) is a blown-powder laser deposition process which can produce fully-dense and metallurgicaly sound parts by a layered manufacturing method. Since a deposition head equipped with discontinuous radially symmetric nozzles has the potential to be tilted without influence of the gr...
null
null
null
null
null
null
['Kriewall, Caitlin S.', 'Sutton, Austin T.', 'Leu, Ming C.', 'Newkirk, Joseph W.', 'Brown, Ben']
2021-10-27T21:19:28Z
2021-10-27T21:19:28Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89617
eng
2016 International Solid Freeform Fabrication Symposium
Open
['selective laser melting', 'heat-affected powder', '304L']
Investigation of Heat-Affected 304L SS Powder and Its Effect on Built Parts in Selective Laser Melting
Conference paper
https://repositories.lib.utexas.edu//bitstreams/c7af8059-0c57-4371-95d6-50e54506baa3/download
University of Texas at Austin
Selective laser melting (SLM) is a powder bed based additive manufacturing process in which a layer of powder is laid over the surface of a substrate and a laser with sufficient energy is employed to selectively melt particles to build a part layer by layer. During the SLM process, dark smoke was observed coming off of...
null
null
null
null
null
null
['McCleary, J.', 'Durand, N.', 'Castillo Perez, L.', 'Medina Zorrosa, G.', 'Garcia Chavira J.P.', 'Espalin, D.']
2024-03-26T21:13:53Z
2024-03-26T21:13:53Z
2023
Mechanical Engineering
null
['https://hdl.handle.net/2152/124411', 'https://doi.org/10.26153/tsw/51019']
en_US
2023 International Solid Freeform Fabrication Symposium
Open
['in-situ monitoring', 'robocasting', 'ceramics', 'quality control']
INVESTIGATION OF INSTRUMENTING ROBOCASTING PRINTER FOR CERAMIC SLURRIES
Conference paper
https://repositories.lib.utexas.edu//bitstreams/c72edbf9-1eb8-4d08-b14b-eb3f1e1fe20b/download
University of Texas at Austin
Robocasting has multiple steps from ceramic slurry preparation to sintering that can impact the end part quality. In-situ monitoring and process controls can aid in minimizing differences in the quality of printed parts. The study and impact of different parameters during the printing process and a parameter database w...
null
null
null
null
null
null
['Stucker, Brent', 'Esplin, Carson', 'Justin, Daniel']
2019-12-05T18:28:11Z
2019-12-05T18:28:11Z
2004
Mechanical Engineering
null
['https://hdl.handle.net/2152/78653', 'http://dx.doi.org/10.26153/tsw/5709']
eng
2004 International Solid Freeform Fabrication Symposium
Open
Medical-Grade
An Investigation of LENS®-Deposited Medical-Grade CoCrMo Alloys
Conference paper
https://repositories.lib.utexas.edu//bitstreams/38592c75-eaa1-4d8d-9739-133150168a8a/download
null
A series of deposition experiments using CoCrMo were performed using an Optomec LENS®1 machine. An analysis of hardness, microstructure, and wear trends of the deposited alloys was undertaken in an attempt to determine the applicability of using LENS® to create better materials for orthopedic implants. It was found th...
null
null
null
null
null
null
['Hossein Sehhat, M.', 'Sutton, Austin T.', 'Newkirk, Joseph W.', 'Leu, Ming C.']
2021-12-06T21:59:23Z
2021-12-06T21:59:23Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90688', 'http://dx.doi.org/10.26153/tsw/17607']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['gas-atomized powder', 'water-atomized powder', '304L', 'stainless steel', 'mechanical properties', 'laser powder bed fusion']
Investigation of Mechanical Properties of Parts Fabricated with Gas- and Water-Atomized 304L Stainless Steel Powder in the Laser Powder Bed Fusion Process
Conference paper
https://repositories.lib.utexas.edu//bitstreams/0372a21b-0d73-44c1-9bc6-7b762e106bc4/download
University of Texas at Austin
The use of gas-atomized powder as the feedstock material for the Laser Powder Bed Fusion (LPBF) process is common in the Additive Manufacturing (AM) community. Although gas-atomization produces powder with high sphericity, its relatively expensive production cost is a downside for application in AM processes. Water ato...
null
null
null
null
null
null
['Ploetz, M.', 'Heckmeier, F.', 'Kirchebner, B.', 'Volk, W.', 'Lechner, P.']
2024-03-26T21:15:24Z
2024-03-26T21:15:24Z
2023
Mechanical Engineering
null
['https://hdl.handle.net/2152/124412', 'https://doi.org/10.26153/tsw/51020']
en_US
2023 International Solid Freeform Fabrication Symposium
Open
['material jetting', 'liquid metal jetting', 'coppor alloys', 'multi-material parts']
INVESTIGATION OF MULTI-MATERIAL LIQUID METAL JETTING WITH COPPER MATERIALS
Conference paper
https://repositories.lib.utexas.edu//bitstreams/19ba36ec-e37b-4315-9331-c620d1b7509c/download
University of Texas at Austin
Technical parts are typically subject to various requirements that may conflict with each other. Multi-material parts can be a way to overcome such conflicting goals. Liquid Metal Jetting (LMJ) can be a promising additive manufacturing process for the production of multi-material copper parts with high geometric comple...
null
null
null
null
null
null
['Lewis, Adam', 'Katta, Nitesh', 'McElroy, Austin', 'Milner, Thomas', 'Fish, Scott', 'Beaman, Joseph']
2021-11-08T22:57:07Z
2021-11-08T22:57:07Z
2017
Mechanical Engineering
null
['https://hdl.handle.net/2152/90067', 'http://dx.doi.org/10.26153/tsw/16988']
eng
2017 International Solid Freeform Fabrication Symposium
Open
['optical coherence tomography', 'nylon 12 powder', 'imaging depth', 'imaging', 'selective laser sintering']
Investigation of Optical Coherence Tomography Imaging in Nylon 12 Powder
Conference paper
https://repositories.lib.utexas.edu//bitstreams/b72624c2-eb9a-487f-b5d2-9025cd2cd51e/download
University of Texas at Austin
Optical Coherence Tomography (OCT) has shown promise as a new process sensor in selective laser sintering (SLS) which can yield depth resolved data not attainable with conventional sensors. However, OCT images of nylon 12 SLS parts and powder contain artifacts, which have not been previously investigated in literature....
null
null
null
null
null
null
['Liu, Qingbin', 'Leu, Ming C.', 'Schmitt, Stephen M.']
2019-10-30T16:30:59Z
2019-10-30T16:30:59Z
2002
Mechanical Engineering
null
['https://hdl.handle.net/2152/78186', 'http://dx.doi.org/10.26153/tsw/5275']
eng
2002 International Solid Freeform Fabrication Symposium
Open
Prototyping
Investigation of Part Accuracy and Surface Roughness in Rapid Freeze Prototyping Based Investment Casting
Conference paper
https://repositories.lib.utexas.edu//bitstreams/8cf9c24e-ed56-4dc3-ad48-a4986a043ce4/download
null
The study as described in this paper is aimed at investigating the dimensional accuracy and surface finish of metal parts made by investment casting with ice patterns generated by rapid freeze prototyping. The process of investment casting with ice patterns is described and contrast with conventional investment casting...
The authors gratefully acknowledge the financial support from the National Science Foundation grants (DMI-0128313 and DMI-0140625) and the Research Board of University of Missouri at Rolla.
null
null
null
null
null
["O'Neill, W.", 'Sutcliffe, C.J.', 'Morgan, R.', 'Hon, K.K.B.']
2019-02-19T19:44:49Z
2019-02-19T19:44:49Z
1998
Mechanical Engineering
null
['https://hdl.handle.net/2152/73437', 'http://dx.doi.org/10.26153/tsw/589']
eng
1998 International Solid Freeform Fabrication Symposium
Open
['RPT', 'AIMS']
Investigation of Short Pulse Nd:YAG Laser Interaction with Stainless Steel Powder Beds
Conference paper
https://repositories.lib.utexas.edu//bitstreams/184e4e62-d27b-4684-8d8e-8dd648361444/download
null
The development of metallic object construction has occurred at quite a pace over the last five years with provision of many commercial techniques such as indirect and direct sintering of metal powder beds. Although porosity is still a major problem for metal building a number of notable solutions have been proposed, t...
null
null
null
null
null
null
['Iyibilgin, O.', 'Leu, M.C.', 'Taylor, G.', 'Li, H.', 'Chandrashekhara, K.']
2021-10-13T19:39:16Z
2021-10-13T19:39:16Z
2014
Mechanical Engineering
null
['https://hdl.handle.net/2152/88771', 'http://dx.doi.org/10.26153/tsw/15705']
eng
2014 International Solid Freeform Fabrication Symposium
Open
['Fused Deposition Modeling', 'sparse-build tooling', 'rapid tooling', 'ULTEM', 'test coupons']
Investigation of Sparse-Build Rapid Tooling by Fused Deposition Modeling
Conference paper
https://repositories.lib.utexas.edu//bitstreams/2551c165-a8b6-47b8-b01a-3f3df6810ab5/download
University of Texas at Austin
This paper describes the investigation of sparse-build tooling by Fused Deposition Modeling (FDM®) aimed at rapid tooling with reduction in the amount of material. Sparse-build test coupons having ULTEM as the material and varying air gap (sparse spacing), wall thickness, and cap thickness were fabricated using the spa...
null
null
null
null
null
null
['Yang, Li', 'Anam, Md Ashabul']
2021-10-18T20:27:29Z
2021-10-18T20:27:29Z
2014
Mechanical Engineering
null
https://hdl.handle.net/2152/89234
eng
2014 International Solid Freeform Fabrication Symposium
Open
['standard test part design', 'design efficiency', 'additive manufacturing']
An Investigation of Standard Test Part Design for Additive Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/32e6bf89-ddf6-4e68-96ca-27fd6f54af95/download
University of Texas at Austin
This paper investigated the efficiency of the standard test part feature designs. Standard geometrical dimensioning and tolerancing criteria were analyzed for their efficiency in representing process characteristics of additive manufacturing (AM) processes. The design efficiency of the standard test part proposed by NI...
null
null
null
null
null
null
['Swank, M.L.', 'Strucker, B.E.']
2021-09-28T19:33:03Z
2021-09-28T19:33:03Z
9/15/09
Mechanical Engineering
null
['https://hdl.handle.net/2152/88162', 'http://dx.doi.org/10.26153/tsw/15103']
eng
2009 International Solid Freeform Fabrication Symposium
Open
['support materials', 'Ultrasonic Consolidation', 'microstructures']
Investigation of Support Materials for Use in Ultrasonic Consolidation
Conference paper
https://repositories.lib.utexas.edu//bitstreams/52605998-1205-44bc-8b0c-5ecf90bd1db9/download
University of Texas at Austin
This paper provides an overview of the need for supports and what characterizes a good support material for Ultrasonic Consolidation. The goal is to look at a broad range of possible support material choices and the benefits and drawbacks of each. By manually depositing support materials during a build, each material i...
null
null
null
null
null
null
['Poyraz, Ö.', 'Yasa, E.', 'Akbulut, G.', 'Orhangül, A.', 'Pilatin, S.']
2021-10-20T20:52:02Z
2021-10-20T20:52:02Z
2015
Mechanical Engineering
null
https://hdl.handle.net/2152/89359
eng
2015 International Solid Freeform Fabrication Symposium
Open
['Direct Metal Laser Sintering', 'support structures', 'IN625', 'thin wall']
Investigation of Support Structures for Direct Metal Laser Sintering (DMLS) of IN625 Parts
Conference paper
https://repositories.lib.utexas.edu//bitstreams/4699bea2-492b-449e-b15b-6e908586bc8b/download
University of Texas at Austin
Along with the increased application of additive manufacturing (AM) in the aerospace industry, a better understanding of different aspects for the technique has become necessary to fulfill the high demands of reliability and robustness. The ability to introduce very complex, even internal, features into part design wit...
null
null
null
null
null
null
['Karnati, S.', 'Axelsen, I.', 'Liou, F.F.', 'Newkirk, J.W.']
2021-10-27T21:07:51Z
2021-10-27T21:07:51Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89614
eng
2016 International Solid Freeform Fabrication Symposium
Open
['selective laser melting', 'tensile properties', 'gage lengths', '304L']
Investigation of Tensile Properties of Bulk and SLM Fabricated 304L Stainless Steel Using Various Gage Length Specimens
Conference paper
https://repositories.lib.utexas.edu//bitstreams/df93c13e-57cc-45f0-92bb-7f7c909b0c9d/download
University of Texas at Austin
The complex solidification dynamics and thermal cycling during Selective Laser Melting process is expected to result in non-equilibrium material characteristics. There is an essential need for characterization techniques which are critical towards the estimation of anisotropies. The current investigation is targeted to...
null
null
null
null
null
null
['Kong, C.Y.', 'Soar, R.C.', 'Dickens, P.M.']
2019-10-23T14:35:22Z
2019-10-23T14:35:22Z
2002
Mechanical Engineering
null
['https://hdl.handle.net/2152/76748', 'http://dx.doi.org/10.26153/tsw/3837']
eng
2002 International Solid Freeform Fabrication Symposium
Open
Ultrasonic
An Investigation of the Control Parameters for Aluminum 3003 under Ultrasonic Consolidation
Conference paper
https://repositories.lib.utexas.edu//bitstreams/13be314c-694c-45fa-a52f-451dc58153bf/download
null
In this article, we investigate an innovative solid-state welding technique called Ultrasonic Consolidation (UC) that is being developed as a freeform process for the layered fabrication of aluminium tapes. UC involves the use of high frequency, low amplitude mechanical vibrations that induce combined static and oscill...
null
null
null
null
null
null
['Basak, Amrita', 'Das, Suman']
2021-10-26T20:05:02Z
2021-10-26T20:05:02Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89571
eng
2016 International Solid Freeform Fabrication Symposium
Open
['additive manufacturing', 'scanning laser epitaxy', 'nickel-base', 'superalloys', 'rené N5', 'elemental segregation']
An Investigation of the Dendritic Segregation in Single-Crystal René N5 Fabricated Through Scanning Laser Epitaxy
Conference paper
https://repositories.lib.utexas.edu//bitstreams/804731de-b256-4d88-a6b9-f5c5d305dc53/download
University of Texas at Austin
Dendritic segregation in single-crystal nickel-base superalloy René N5 was investigated in the present study.
This work is sponsored by the Office of Naval Research through grants N00014-14-1-0658.
null
null
null
null
null
['Elliott, A.M.', 'Ivanova, O.S.', 'Williams, C.B.', 'Campbell, T.A.']
2021-10-07T14:51:09Z
2021-10-07T14:51:09Z
8/15/12
Mechanical Engineering
null
['https://hdl.handle.net/2152/88468', 'http://dx.doi.org/10.26153/tsw/15405']
eng
2012 International Solid Freeform Fabrication Symposium
Open
['additive manufacturing', 'quantum dot', 'nanoparticles', 'photopolymer resin', 'PolyJet', 'direct 3D printing']
An Investigation of the Effects of Quantum Dot Nanoparticles on Photopolymer Resin for Use in PolyJet Direct 3D Printing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/53cb6e11-4ff3-474c-be09-4f312e8ae391/download
University of Texas at Austin
The addition of quantum dot (QD) nanoparticles to additive manufacturing (AM) media provides the opportunity to create artifacts with complex geometry that also have unique optical characteristics. However, the addition of nanoparticles can significantly alter the rheology of a material and make it difficult to process...
null
null
null
null
null
null
['Orange, Abigail', 'Wu, Yan', 'Yang, Li']
2021-11-09T20:10:24Z
2021-11-09T20:10:24Z
2018
Mechanical Engineering
null
['https://hdl.handle.net/2152/90152', 'http://dx.doi.org/10.26153/tsw/17073']
eng
2018 International Solid Freeform Fabrication Symposium
Open
['fatigue strength', 'cellular structures', 'compression-compression cyclic loading', 'electron beam powder bed fusion', 'EB-PBF', 'additive manufacturing']
An Investigation of the Fatigue Strength of Multiple Cellular Structures Fabricated by Electron Beam Powder Bed Fusion Additive Manufacturing Process
Conference paper
https://repositories.lib.utexas.edu//bitstreams/cb093c43-8bf8-4e77-9f2a-fa4d0500af86/download
University of Texas at Austin
In this study multiple cellular structures, including the re-entrant auxetic, the octet-truss, and the BCC lattice, were evaluated for their relative performance of fatigue strength under compression-compression cyclic loading. Various design variations with different dimensions were fabricated via electron beam powder...
null
null
null
null
null
null
['Bodger, C.', 'Gnaase, S.', 'Lehnert, D.', 'Troster, T.']
2024-03-26T21:18:22Z
2024-03-26T21:18:22Z
2023
Mechanical Engineering
null
['https://hdl.handle.net/2152/124413', 'https://doi.org/10.26153/tsw/51021']
en_US
2023 International Solid Freeform Fabrication Symposium
Open
['laser powder bed fusion', 'Inconel 718', 'process parameters', 'additive manufacturing']
Investigation of the influence of process parameters on productivity in the LPBF process for the material Inconel 718
Conference paper
https://repositories.lib.utexas.edu//bitstreams/43f5aaac-d740-4371-927c-e91b24748a25/download
null
The nickel-based alloy Inconel 718, which is used in aerospace technology, poses a great challenge to conventional machining due to its high strain hardening and toughness. Here, the laser powder bed fusion process (LPBF) offers an alternative with potential savings if sufficiently high productivity can be achieved. Ba...
null
null
null
null
null
null
Boivie, Klas
2019-10-22T18:29:34Z
2019-10-22T18:29:34Z
2002
Mechanical Engineering
null
['https://hdl.handle.net/2152/76338', 'http://dx.doi.org/10.26153/tsw/3427']
eng
2002 International Solid Freeform Fabrication Symposium
Open
Sintering
Investigation of the Liquid Phase Sintering of Size Range Composed Powder for SLS Application
Conference paper
https://repositories.lib.utexas.edu//bitstreams/428d1a38-25a8-4c84-8f6e-cb72e6b6e300/download
null
In order to find the constraints and limiting factors for the development of a series of homogenous steel materials has three different aspects of such a material system been investigated in relation to each other; the composition of powders, the formation of green bodies and sintering in a vacuum furnace. It was found...
null
null
null
null
null
null
['Cooke, A.L.', 'Folgar, C.E.', 'Folgar, L.N.', 'Williams, J.', 'Park, S.', 'Rosen, D.W.']
2021-10-12T18:18:05Z
2021-10-12T18:18:05Z
2013
Mechanical Engineering
null
['https://hdl.handle.net/2152/88712', 'http://dx.doi.org/10.26153/tsw/15646']
eng
2013 International Solid Freeform Fabrication Symposium
Open
['conformal lattice structures', 'cellular materials', 'laser sintering', '3D Systems Corporation', 'Georgia Institute of Technology']
An Investigation of the Material Properties of Laser Sintered Parts Incorporating Conformal Lattice Structures (CLS™) Technology
Conference paper
https://repositories.lib.utexas.edu//bitstreams/661d8c33-4f58-4186-96f8-fa71d7e7a517/download
University of Texas at Austin
Cellular materials, including foams, honeycombs, lattices, and similar constructions, offer the key advantages of high strength-to-weight ratios and favorable energy absorption characteristics. The concept of designed cellular materials enables customized material placement to best suit the demands of specific applicat...
null
null
null
null
null
null
['Fu, Youheng', 'Zhang, Haiou', 'Wang, Guilan', 'Wang, Huafeng']
2021-11-02T15:33:40Z
2021-11-02T15:33:40Z
2017
Mechanical Engineering
null
https://hdl.handle.net/2152/89832
eng
2017 International Solid Freeform Fabrication Symposium
Open
['additive manufacturing', 'bainite steel', 'mechanical properties', 'micro rolling', 'welding']
Investigation of the Mechanical Properties on Hybrid Deposition and Micro-Rolling of Bainite Steel
Conference paper
https://repositories.lib.utexas.edu//bitstreams/ed025d0d-be05-4d8e-ae37-566fd3da2441/download
University of Texas at Austin
Wire and arc additive manufacturing (WAAM) is a novel technology with high efficiency and low cost for mass popularity. Whereas, the lack of deposition accuracy and microstructure performances are still restricting its ongoing development. In this paper, hybrid deposition and micro-rolling (HDMR) process has been used ...
null
null
null
null
null
null
['Seefried, M.', 'Zaeh, M.F.']
2020-02-17T14:55:02Z
2020-02-17T14:55:02Z
2004
Mechanical Engineering
null
['https://hdl.handle.net/2152/80002', 'http://dx.doi.org/10.26153/tsw/7027']
eng
2004 International Solid Freeform Fabrication Symposium
Open
Indirect Metal Laser Sintering
Investigation of the Oven Process in Indirect Metal Laser Sintering
Conference paper
https://repositories.lib.utexas.edu//bitstreams/7f975857-7ce4-45ed-82de-e59d8379d4d8/download
null
This paper deals with the optimization of Indirect Metal Laser Sintering. Different experimental analyses have proven that the oven process is highly responsible for the part distortion. By means of polished micrograph sections and thermogravimetric and dilatometric investigations, the oven process has been divided int...
null
null
null
null
null
null
['Dörfert, R.', 'Zhang, J.', 'Clausen, B.', 'Freiße, H.', 'Schumacher, J.', 'Vollertsen, F.']
2021-11-18T01:04:14Z
2021-11-18T01:04:14Z
2019
Mechanical Engineering
null
['https://hdl.handle.net/2152/90383', 'http://dx.doi.org/10.26153/tsw/17304']
eng
2019 International Solid Freeform Fabrication Symposium
Open
['oxygen content', 'mechanical property', 'tool steel 1.2344', 'laser beam melting']
Investigation of the Oxygen Content of Additively Manufactured Tool Steel 1.2344
Conference paper
https://repositories.lib.utexas.edu//bitstreams/c5f1126b-8e8e-4282-bdad-d3e378f451d4/download
University of Texas at Austin
Laser Beam Melting (LBM) offers a high design flexibility and the possibility to create complex metal parts in small batch sizes efficiently. However, several questions regarding the mechanical properties are still not conclusively clarified. In general, the remaining degree of porosity is regarded as major indicator o...
null
null
null
null
null
null
['Moritzer, E.', 'Hecker, F.']
2023-04-05T13:52:43Z
2023-04-05T13:52:43Z
2022
Mechanical Engineering
null
['https://hdl.handle.net/2152/117775', 'http://dx.doi.org/10.26153/tsw/44654']
eng
2022 International Solid Freeform Fabrication Symposium
Open
raster lines
Investigation of the Process Parameters and Geometry Dependent Shrinkage Behavior of Raster Lines in the Fused Deposition Modeling Process
Conference paper
https://repositories.lib.utexas.edu//bitstreams/83be408c-b915-433b-ba88-6c56169327bc/download
null
Additive Manufacturing processes are able to generate components from raw material (filament, powder etc.) without the need of tools or conventional machining. One of the most common Additive Manufacturing processes is the Fused Deposition Modeling (FDM). Here, a thermoplastic polymer filament is fed into a heated n...
null
null
null
null
null
null
['Lombardi, John L.', 'Artz, Gregory J.', 'Popovich, Dragan', 'Vaidyanathan, Ranji']
2019-02-26T17:27:03Z
2019-02-26T17:27:03Z
1998
Mechanical Engineering
null
['https://hdl.handle.net/2152/73490', 'http://dx.doi.org/10.26153/tsw/640']
eng
1998 International Solid Freeform Fabrication Symposium
Open
['EFF', 'FDM']
Issues Associated with the Development of a Water Soluble Support Material for use in Extrusion Freeforming & Fused Depositon Modeling
Conference paper
https://repositories.lib.utexas.edu//bitstreams/0fff1782-a8db-4ee5-8daf-aa18b9c02a5f/download
null
null
null
null
null
null
null
null
['Park, Jae-hyoung', 'Rosen, David W.']
2019-10-23T15:27:22Z
2019-10-23T15:27:22Z
2002
Mechanical Engineering
null
['https://hdl.handle.net/2152/76762', 'http://dx.doi.org/10.26153/tsw/3851']
eng
2002 International Solid Freeform Fabrication Symposium
Open
Vapor Deposition
Issues in Process Planning for Laser Chemical Vapor Deposition
Conference paper
https://repositories.lib.utexas.edu//bitstreams/f19e641d-db1f-41d8-8ed7-adb54bac2984/download
null
Laser Chemical Vapor Deposition (LCVD) is a promising rapid prototyping and manufacturing process that deposits metals and ceramics by local heating of a substrate with a laser. Even though many LCVD process planning characteristics are shared with those of more common Solid Freeform Fabrication (SFF) technologies, LCV...
We gratefully acknowledge funding from NSF, grant DMI-0070429, and the support of the member companies of the Georgia Tech Rapid Prototyping & Manufacturing Institute.
null
null
null
null
null
['Morvan, Stephane M.', 'Fadel, Georges M.']
2018-11-15T21:24:27Z
2018-11-15T21:24:27Z
1996
Mechanical Engineering
doi:10.15781/T2ZW19C2Q
http://hdl.handle.net/2152/70281
eng
1996 International Solid Freeform Fabrication Symposium
Open
['IVECS', 'FFF', 'water-tight']
IVECS, Interactively Correcting .STL Files in a Virtual Environment
Conference paper
https://repositories.lib.utexas.edu//bitstreams/b49c0702-084d-425e-b48c-f8a87f122b14/download
null
Free Form Fabrication (FFF) machines transform objects merely existing as Os or 1s in a computer into a tangible object. FFF machines shift the paradigm of standard 2 Dimensional printers/paper printouts to 3 Dimensional printers/volumetric printouts (or 3D hardcopies). Currently, this technology is weakened by the lin...
null
null
null
null
null
null
['Xiong, Ruitong', 'Christensen, Kyle', 'Xu, Changxue', 'Huang, Yong']
2021-10-18T21:24:15Z
2021-10-18T21:24:15Z
2014
Mechanical Engineering
null
https://hdl.handle.net/2152/89250
eng
2014 International Solid Freeform Fabrication Symposium
Open
['bioprinting', '3D inket printing', '3D laser printing', 'organ printing', 'organ transplant']
Jet-Based 3D Printing of Biological Constricts
Conference paper
https://repositories.lib.utexas.edu//bitstreams/23e3bd63-7b21-440f-aab8-d2cd7a805f07/download
University of Texas at Austin
Organ printing is the layer-by-layer bottom-up fabrication of complex cellular organization of native tissues or organs by bioprinting multiple cell types and other biomaterials at designated positions. The rising success rate of transplants has resulted in a critical need for more tissues and organs. Approximately 95,...
null
null
null
null
null
null
['Haffner, H.A.', 'Rangapuram, M.', 'Dasari, S.K.', 'Isanaka, S.P.', 'Chandrashekhara, K.', 'Buchely, M.F.', 'Newkirk, J.W.']
2024-03-26T16:34:28Z
2024-03-26T16:34:28Z
2023
Mechanical Engineering
null
['https://hdl.handle.net/2152/124361', 'https://doi.org/10.26153/tsw/50969']
en_US
2023 International Solid Freeform Fabrication Symposium
Open
['Johnson-Cook damage model', 'finite element simulation', 'laser powder bed fusion', '304L stainless steel']
JOHNSON-COOK FAILURE MODEL FOR ADDITIVELY MANUFACTURED 304L STAINLESS STEEL PARTS
Conference paper
https://repositories.lib.utexas.edu//bitstreams/64a8041b-eaed-4a51-a1b2-17822b63919a/download
University of Texas at Austin
Laser powder bed fusion (LPBF) process is a type of additive manufacturing technique which uses a powder bed to form complex metal parts in a layer-by-layer process. This study aims to understand the damage initiation in the parts manufactured by LPBF process using 304L stainless steel powder, which is widely used in n...
null
null
null
null
null
null
['Zhang, Xinchang', 'Chen, Yitao', 'Pan, Tan', 'Cui, Wenyuan', 'Li, Lan', 'Liou, Frank']
2021-11-17T23:44:50Z
2021-11-17T23:44:50Z
2019
Mechanical Engineering
null
['https://hdl.handle.net/2152/90358', 'http://dx.doi.org/10.26153/tsw/17279']
eng
2019 International Solid Freeform Fabrication Symposium
Open
['copper', 'stainless steel 304L', 'joining', 'direct metal deposition']
Joining of Copper and Stainless Steel 304L Using Direct Metal Deposition
Conference paper
https://repositories.lib.utexas.edu//bitstreams/a4664efa-3730-4868-99a7-142b08711af1/download
University of Texas at Austin
In the current study, the feasibility of joining pure copper (Cu) and stainless steel 304L (SS304L) through direct metal deposition process was investigated by material characterization. Samples were analyzed in terms of microstructure, elemental distribution, and tensile testing. Direct depositing pure copper on SS304...
null
null
null
null
null
null
['Yasin, Mohammad Salman', 'Soltani-Tehrani, Arash', 'Poudel, Arun', 'Shao, Shuai', 'Shamsaei, Nima']
2023-01-26T14:06:20Z
2023-01-26T14:06:20Z
2022
Mechanical Engineering
null
['https://hdl.handle.net/2152/117301', 'http://dx.doi.org/10.26153/tsw/44182']
eng
2022 International Solid Freeform Fabrication Symposium
Open
KPV
Key Process Variable (KPV) Variations and Their Impact on Defect Structure and Tensile Behavior of L-PBF Ti-6Al-4V
Conference paper
https://repositories.lib.utexas.edu//bitstreams/3264e7ce-3bb5-44dc-bba2-f9af8f3313e3/download
null
The process variables used in laser powder bed fusion (L-PBF) influence the defect formation in fabricated parts. However, key process variables (KPVs) such as laser power, laser speed, and hatch distance may drift within their tolerances during service between calibrations. These variations can result in different ...
null
null
null
null
null
null
['Buchanan, Ranger', 'Kumar Dasari, Jeevan', 'Fidan, Ismail', 'Allen, Michael', 'Bhattacharya, Indranil']
2023-03-27T19:55:28Z
2023-03-27T19:55:28Z
2022
Mechanical Engineering
null
['https://hdl.handle.net/2152/117660', 'http://dx.doi.org/10.26153/tsw/44539']
eng
2022 International Solid Freeform Fabrication Symposium
Open
['Fused Filament Fabrication', 'Iron-PLA Filament', 'Magnetability', 'ANOVA', 'MANOVA']
Knowledge Base Development for Mechanical Properties and Energy Consumption of Iron-PLA Composite Filaments in Additive Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/1f9cada4-1034-4e83-8189-5718dab8e5d9/download
null
Additive Manufacturing (AM) is one of the latest manufacturing processes where instead of cutting away from material or casting an object, as in Traditional Manufacturing (TM), one constructively adds material to create a required design. The benefits of AM allow for some designs that are impossible to be manufactur...
null
null
null
null
null
null
['Xu, F.', 'Wong, Y.S.', 'Loh, H.T.']
2019-03-06T18:05:23Z
2019-03-06T18:05:23Z
1999
Mechanical Engineering
null
['https://hdl.handle.net/2152/73559', 'http://dx.doi.org/10.26153/tsw/701']
eng
1999 International Solid Freeform Fabrication Symposium
Open
['CAD', 'RP&M technology']
A Knowledge-based Decision Support System for RP&M Process Selection
Conference paper
https://repositories.lib.utexas.edu//bitstreams/3b10799d-a79b-4e33-b5e4-af00e622384b/download
null
Due to the large variety of RP&M material/machines and the. strengths/weaknesses associated with different RP&M processes, the decision·to select a suitableRP&M system becomes increasingly difficult. This paper presents a knowledge-based approach for the selection ofsuitable RP&M material/machine to meet specific. requ...
null
null
null
null
null
null
['Auth, C.', 'Borstell, D.', 'Anderl, R.']
2021-11-15T21:50:23Z
2021-11-15T21:50:23Z
2018
Mechanical Engineering
null
['https://hdl.handle.net/2152/90282', 'http://dx.doi.org/10.26153/tsw/17203']
eng
2018 International Solid Freeform Fabrication Symposium
Open
['material production', 'manufacturing phase', 'lifecycle', 'fused deposition modeling', 'additive manufacturing']
Knowledge-Based Material Production in the Additive Manufacturing Lifecycle of Fused Deposition Modeling
Conference paper
https://repositories.lib.utexas.edu//bitstreams/3e482293-46d4-45c8-a2de-b1a585b6806a/download
University of Texas at Austin
The additive manufacturing (AM) lifecycle starts with the material production. This phase has an impact on the AM process and its quality. Nowadays, information concerning material production is not connected to the manufacturing process or the manufactured component. Increasing digitalization enables data acquisition,...
null
null
null
null
null
null
Bernard, Alain
2019-03-08T17:38:27Z
2019-03-08T17:38:27Z
1999
Mechanical Engineering
null
['https://hdl.handle.net/2152/73570', 'http://dx.doi.org/10.26153/tsw/712']
eng
1999 International Solid Freeform Fabrication Symposium
Open
['rapid prototyping process', 'optimization']
Knowledge-based system for choice of rapid prototyping process
Conference paper
https://repositories.lib.utexas.edu//bitstreams/6ce1ddc5-38b8-4243-b0c2-15a3e8b3a688/download
null
This paper introduces a knowledge-based system for the choice of rapid product development processes. Rapid product development processes are not limited to layer-manufacturing machines, but they also integrate CAD reverse engineering, indirect methods for metallic and plastic part manufacturing, etc... Due to short de...
null
null
null
null
null
null
['Feygin, Michael', 'Hsieh, Brian']
2018-04-17T16:27:10Z
2018-04-17T16:27:10Z
1991
Mechanical Engineering
doi:10.15781/T2PV6BQ54
http://hdl.handle.net/2152/64325
eng
1991 International Solid Freeform Fabrication Symposium
Open
['Mechanical, Aerospace, and Nuclear Engineering Department', 'Laminated Object Manufacturing', 'LOM', 'CAD']
Laminated Object Manufacturing (LOM): A Simpler Process
Conference paper
https://repositories.lib.utexas.edu//bitstreams/95bf7a6d-8ea9-4a47-bc81-4a3dd320a8e4/download
null
With Laminated Object Manufacturing (LQM) process, three dimensional objects are manufactured by sequentially laminating and cUtting two-dimensional cross-sections. The.rnediumused.inLOMprocess isaQhesive-coatedsheet• materials.. As seen in Figure 1, the sheetmateria.l carries the adhesive either on one sideQr both sid...
null
null
null
null
null
null
['Pope, Matthew J.', 'Patterson, Mark C.L.', 'Zimbeck, Walter', 'Fehrenbacher, Mark']
2018-12-06T21:22:01Z
2018-12-06T21:22:01Z
1997
Mechanical Engineering
doi:10.15781/T2XP6VP98
http://hdl.handle.net/2152/71431
eng
1997 International Solid Freeform Fabrication Symposium
Open
['damage-critica', 'laminated']
Laminated Object Manufacturing of Si3N4 With Enhanced Properties
Conference paper
https://repositories.lib.utexas.edu//bitstreams/56a20f92-8691-423b-bebb-dd0d07ed07a1/download
null
The potential to fabricate near net-shape ceramic components of intricate shape is attractive and offers considerable savings in cost and time. The laminated architecture inherent in many Rapid Prototyping techniques can be utilized to enhance material properties by providing weak interfaces at regular intervals, orien...
null
null
null
null
null
null
['Eyerer, P.', 'Keller, B.', 'Shen, J.']
2018-09-26T20:27:36Z
2018-09-26T20:27:36Z
1994
Mechanical Engineering
doi:10.15781/T2DF6KN7G
http://hdl.handle.net/2152/68594
eng
1994 International Solid Freeform Fabrication Symposium
Open
['RP Systems', 'stereolithography systems', 'low-power laser']
LAPS - Laser Aided Powder Solidification - Technology for the direct production of metallic and polymer parts
Conference paper
https://repositories.lib.utexas.edu//bitstreams/ed77102d-8d81-4dbd-a40d-9cfae70205f5/download
null
The prototypes of today's commercial available RP-Systems (e.g. StereolithographySystems) are suitable mainly for designing and, if even, for restricted functional tests. From this it can be concluded that for obtaining functional or technical prototypes one has to use time- and cost-intensive downstream-technologies l...
null
null
null
null
null
null
['Spinnie, N.', 'Smith, D.E.']
2021-10-28T15:42:58Z
2021-10-28T15:42:58Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89666
eng
2016 International Solid Freeform Fabrication Symposium
Open
['large-scale fused deposition modeling', 'fused deposition modeling', 'bead geometry', 'processing parameters']
Large Scale Fused Deposition Modeling: The Effect of Processing Parameters on Bead Geometry
Conference paper
https://repositories.lib.utexas.edu//bitstreams/ac20c0bc-8faa-4a04-bcea-6a90e32a4cc7/download
University of Texas at Austin
This paper considers processing parameters that affect bead geometry in large-scale Fused Deposition Modeling (FDM). A BAK ExOn8 single screw mini extruder is used to deposit controlled thermoplastic beads on a custom made heated build platform specifically design for studying bead deposition. This study considers nozz...
null
null
null
null
null
null
['Nycz, A.', 'Adediran, A.I.', 'Noakes, M.W.', 'Love, L.J.']
2021-11-01T20:53:26Z
2021-11-01T20:53:26Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89746
eng
2016 International Solid Freeform Fabrication Symposium
Open
['large structures', 'metal additive techniques', 'large scale metal additive techniques', 'metal additive manufacturing', 'geometric limit']
Large Scale Metal Additive Techniques Review
Conference paper
https://repositories.lib.utexas.edu//bitstreams/c1f35978-c5fc-41f3-80a4-bcb5c9258025/download
University of Texas at Austin
In recent years additive manufacturing has made long strides toward becoming a main stream production technology. Particularly strong progress has been made in large-scale polymer deposition. However, large scale metal additive has not yet reached parity with large scale polymer. This paper is a survey of the metal add...
null
null
null
null
null
null
['Watson, N.D.', 'Meisel, N.A.', 'Bilén, S.G.', 'Duarte, J.', 'Nazarian, S.']
2021-11-18T18:40:45Z
2021-11-18T18:40:45Z
2019
Mechanical Engineering
null
['https://hdl.handle.net/2152/90462', 'http://dx.doi.org/10.26153/tsw/17383']
eng
2019 International Solid Freeform Fabrication Symposium
Open
['large-scale additive manufacturing', 'concrete structures', '6-axis', 'robotic arm', 'habitat construction']
Large-Scale Additive Manufacturing of Concrete Using a 6-Axis Robotic Arm for Autonomous Habitat Construction
Conference paper
https://repositories.lib.utexas.edu//bitstreams/8378b15a-46f8-4cab-937b-e815344eed00/download
University of Texas at Austin
Layer-by-layer construction of concrete through additive manufacturing allows for greater design freedom in concrete construction compared to conventional casting methods. This has led researchers to pursue a variety of potential system solutions to the enable the creation of architectural-scale additively-manufactured...
null
null
null
null
null
null
['Shepherd, Jacob J.', 'Meisel, Nicholas A.']
2021-11-16T15:39:38Z
2021-11-16T15:39:38Z
2019
Mechanical Engineering
null
['https://hdl.handle.net/2152/90317', 'http://dx.doi.org/10.26153/tsw/17238']
eng
2019 International Solid Freeform Fabrication Symposium
Open
['suitable parts', 'part filtering', 'printable As-Is', 'easily redesigned for printing', 'not printable parts', 'large-scale additive manufacturing']
Large-Scale Identification of Parts Suitable for Additive Manufacturing: An Industry Perspective
Conference paper
https://repositories.lib.utexas.edu//bitstreams/f659a8c2-22db-41aa-bcd0-7c848cc577c3/download
University of Texas at Austin
Additive manufacturing (AM) has many potential benefits to the aerospace industry, especially when low production quantities are required. These benefits range from lightweight and complex geometries to reduced setup costs and lead time. One of the largest challenges to introducing AM into an existing aerospace vehicle...
null
null
null
null
null
null
['Boulger, Alex', 'Laughter, Tyler', 'Rhodes, Andrew', 'Mhatre, Paritosh', 'Tsiamis, Nikolaos', 'Hershey, Christopher', 'Romberg, Stian', 'Lindahl, John', 'Kunc, Vlastimil']
2021-11-30T20:35:28Z
2021-11-30T20:35:28Z
2019
Mechanical Engineering
null
['https://hdl.handle.net/2152/90538', 'http://dx.doi.org/10.26153/tsw/17457']
eng
2019 International Solid Freeform Fabrication Symposium
Open
['large-scale thermoset', 'pick and place', '3D printer', 'large-scale additive manufacturing']
Large-Scale Thermoset Pick and Place Testing and Implementation
Conference paper
https://repositories.lib.utexas.edu//bitstreams/38751810-74da-4eb1-b185-8a918d0d50b9/download
University of Texas at Austin
Oak Ridge National Laboratory is developing the first commercially available medium to large-scale thermoset additive manufacturing (AM) system with Magnum Venus Products (MVP). This 3D printer is capable of fabricating large-scale thermoset components at room temperature with a build volume of 16’ x 8’ x 42’’. The the...
null
null
null
null
null
null
['Strauss, Joseph Tunick', 'Stucky, Michael J.']
2021-10-26T19:30:40Z
2021-10-26T19:30:40Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89565
eng
2016 International Solid Freeform Fabrication Symposium
Open
['powder', 'powder mixture', 'additive manufacturing']
Laser Additive Manufacturing Process of a Mixture of Iron and Nickel Powders
Conference paper
https://repositories.lib.utexas.edu//bitstreams/02731c71-23fc-4249-89b3-fcc1d585d5ec/download
University of Texas at Austin
Laser-based powder bed additive manufacturing (AM) of metal powders uses pre-alloyed powder, which limits the alloys available for processing. Other processes using metal powders such as powder metallurgy (PM) (press and sinter and MIM (Metal Injection Molding)) and welding use elemental powder mixtures to produce a wi...
null
null
null
null
null
null
['Zhang, Jun', 'Ruan, Jianzhong', 'Liou, Frank']
2019-09-23T15:52:44Z
2019-09-23T15:52:44Z
2000
Mechanical Engineering
null
['https://hdl.handle.net/2152/75945', 'http://dx.doi.org/10.26153/tsw/3044']
eng
2000 International Solid Freeform Fabrication Symposium
Open
Automation
Laser Additive Manufacturing Process Planning and Automation 243
Conference paper
https://repositories.lib.utexas.edu//bitstreams/e8701380-0173-47bd-a292-587f6e69d90f/download
null
This paper presents a Laser Additive Manufacturing Process Planning (LAMPP) being developed at the University of Missouri-Rolla. The off-line planning recognizes difficult-to-build features from an STL file, selects optimal part orientation and building directions based on the skeleton information of the object geometr...
null
null
null
null
null
null
['Franceschini, Robert', 'Napravnik, Lee', 'Mukherjee, Amar', 'Sankaranarayanan, Srikanth', 'Kar, Aravinda']
2018-11-28T19:21:13Z
2018-11-28T19:21:13Z
1997
Mechanical Engineering
doi:10.15781/T26W96V6W
http://hdl.handle.net/2152/70324
eng
1997 International Solid Freeform Fabrication Symposium
Open
['Solid Freeform Fabrication', 'design hierarchy', 'layered fabrication']
Laser Aided Direct Rapid Prototyping
Conference paper
https://repositories.lib.utexas.edu//bitstreams/b198e0bf-ac1f-4f46-977c-55cf9031a19c/download
null
We describe a multilevel design hierarchy applicable to the VLSI-like layered manufacturing technology of Solid Freeform Fabrication (SFF) called Laser Aided Direct Rapid Prototyping (LADRP). We discuss the interfaces between the abstraction levels and the requirements of the standard languages needed for the interface...
null
null
null
null
null
null
['Wang, Jinglei', 'Prakash, Sashikanth', 'Joshi, Yashodhan', 'Liou, Frank']
2019-10-22T17:57:41Z
2019-10-22T17:57:41Z
2002
Mechanical Engineering
null
['https://hdl.handle.net/2152/76326', 'http://dx.doi.org/10.26153/tsw/3415']
eng
2002 International Solid Freeform Fabrication Symposium
Open
Part Repair
Laser Aided Part Repair-A Review
Conference paper
https://repositories.lib.utexas.edu//bitstreams/826c5c2e-a1fa-45b9-ab2c-b8fd4a9d4559/download
null
Laser aided part-repair is an emerging trend that has great potential for future industrial applications. Part-repair technologies are currently used in repairing military and civilian equipment. The focus of this paper is to review the current repair processes, which use the laseraided metal deposition technology. Man...
This research was supported by the National Science Foundation Grant Number DMI-9871185, Missouri Research Board, and a grant from the Missouri Department of Economic Development through the MRTC grant.
null
null
null
null
null
['Tandra, Gargi', 'Sparks, Todd Eugene', 'Barua, Shyam', 'Kulkarni, Nikhil P.', 'Liou, Frank']
2021-10-01T00:03:56Z
2021-10-01T00:03:56Z
9/23/10
Mechanical Engineering
null
['https://hdl.handle.net/2152/88302', 'http://dx.doi.org/10.26153/tsw/15243']
eng
2010 International Solid Freeform Fabrication Symposium
Open
['gas diffusion layers', 'polymer electrolyte membrane fuel cells', 'metallic GDL', 'laser deposition']
Laser Based Rapid Manufacturing of Metallic Gas Diffusion Layers for PEM Fuel Cells
Conference paper
https://repositories.lib.utexas.edu//bitstreams/c754e164-22e9-4c48-b35f-91ed7b5febda/download
University of Texas at Austin
Gas Diffusion layers (GDL’s) are an essential component of Polymer Electrolyte Membrane Fuel cells (PEMFC’s) which aid in thermal & electrical conductivities, water management and act as backup layers for the membrane electrode assemblies. This paper summarizes the effort to prototype metallic GDL designs using a minia...
null
null
null
null
null
null
['Holla, Vijaya', 'Kopp, Philipp', 'Grundewald, Jonas', 'Praegla, Patrick M.', 'Meier, Christoph', 'Wudy, Katrin', 'Kollmannsberger, Stefan']
2024-03-26T17:08:57Z
2024-03-26T17:08:57Z
2023
Mechanical Engineering
null
['https://hdl.handle.net/2152/124378', 'https://doi.org/10.26153/tsw/50986']
en_US
2023 International Solid Freeform Fabrication Symposium
Open
['laser beam shaping', 'beam shape optimization', 'Gaussian-shaped laser', 'metal additive manufacturing', 'powder bed fusion of metals']
Laser beam shape optimization: Exploring alternative profiles to Gaussian-shaped laser beams in powder bed fusion of metals
Conference paper
https://repositories.lib.utexas.edu//bitstreams/341fb9bd-2b21-4af1-b38b-897f2d8203b1/download
University of Texas at Austin
Laser-based powder bed fusion of metals (PBF-LB/M) commonly utilizes Gaussian-shaped laser beams characterized by a high intensity at the center. However, this type of profile leads to localized high temperatures and temperature gradients. When the laser power is increased beyond a certain threshold, the temperature in...
null
null
null
null
null
null
['Lubiano, Gigliola', 'Ramon, Jorge A.', 'Magee, Johnathan']
2019-09-23T17:20:23Z
2019-09-23T17:20:23Z
2000
Mechanical Engineering
null
['https://hdl.handle.net/2152/75981', 'http://dx.doi.org/10.26153/tsw/3080']
eng
2000 International Solid Freeform Fabrication Symposium
Open
Bending
Laser Bending of Thin Metal Sheets by Means of a Low Power CO2 Laser 537
Conference paper
https://repositories.lib.utexas.edu//bitstreams/0756fafb-b174-46d6-a900-617f4193435d/download
null
An experimental study of the deformation phenomena during laser bending of 0.5 mm metal sheets is presented here. The thermal gradient mechanism, i.e. ratio of the laser beam diameter to the sheet thickness less than unity, was used to bend the samples. The sheets, which are made of 304 stainless steel, 1100 aluminum a...
null
null
null
null
null
null
['Yeung, Ho', 'Grantham, Steven']
2023-01-27T14:23:20Z
2023-01-27T14:23:20Z
2022
Mechanical Engineering
null
['https://hdl.handle.net/2152/117339', 'http://dx.doi.org/10.26153/tsw/44220']
eng
2022 International Solid Freeform Fabrication Symposium
Open
powder bed fusion
Laser Calibration for Powder Bed Fusion Additive Manufacturing Process
Conference paper
https://repositories.lib.utexas.edu//bitstreams/4901aa54-39d9-48aa-bfe6-d57acf0f4ce4/download
null
Laser powder bed fusion systems use a high-power laser, steered by two galvanometer mirrors to scan a pattern on metal powder layers. The laser spot size, position, and synchronization between the laser power and position are critical to the build quality. This paper describes in-situ calibration techniques utilizin...
null
null
null
null
null
null
['Lightman, Allan', 'Han, Gyoowan']
2018-11-14T17:25:27Z
2018-11-14T17:25:27Z
1996
Mechanical Engineering
doi:10.15781/T27H1F64S
http://hdl.handle.net/2152/70246
eng
1996 International Solid Freeform Fabrication Symposium
Open
['LOM', 'thermal degradation', 'casting']
Laser Cutting of Ceramic Composite Layers
Conference paper
https://repositories.lib.utexas.edu//bitstreams/d029bc8e-1496-4d76-a53f-dbb607fbce0f/download
null
The Laminated, Object Manufacturing (LOM) process lends itself to use of a variety of materials that can be delivered in sheet format. Studies are underway to investigate the use of monolithic and fiber reinforced (composite) ceramic tapes. The laser cutting process presents a challenge due to the refractory properties...
null
null
null
null
null
null
['Li, Xiaoxuan', 'Wang, Jiwen', 'Shaw, Leon L.', 'Cameron, Thomas B.']
2020-02-20T18:32:51Z
2020-02-20T18:32:51Z
2004
Mechanical Engineering
null
['https://hdl.handle.net/2152/80036', 'http://dx.doi.org/10.26153/tsw/7058']
eng
2004 International Solid Freeform Fabrication Symposium
Open
Multi-Material Laser Densification
Laser Densification of Extruded Dental Porcelain Bodies in Multi-Material Laser Densification (MMLD) Process
Conference paper
https://repositories.lib.utexas.edu//bitstreams/2cf053f9-8d03-469a-8d96-f76a901b9374/download
null
In this study commercial dental porcelain powder was deposited via slurry extrusion and laser densified to fabricate dental restorations in a Multi-Material Laser Densification (MMLD) process. The processing conditions for laser densification of single lines and closed rings were investigated in order to avoid warping ...
null
null
null
null
null
null
['Yang, Yu', 'Sparks, Todd', 'Ruan, Jianzhong', 'Ren, Lan', 'Liou, Frank']
2020-03-09T13:38:57Z
2020-03-09T13:38:57Z
8/23/07
Mechanical Engineering
null
['https://hdl.handle.net/2152/80176', 'http://dx.doi.org/10.26153/tsw/7195']
eng
2007 International Solid Freeform Fabrication Symposium
Open
['Laser Aided Manufacturing Lab', 'Laser deposition', 'part comparison']
Laser Deposition Cladding On-Line Inspection Using 3-D Scanner
Conference paper
https://repositories.lib.utexas.edu//bitstreams/733de8e2-7037-48d2-92da-aed8b5f4d769/download
null
Laser deposition directly deposits metal cladding to fabricate and repair components. In order to finish the fabrication or repair, 3-D shape of the deposition needs to be inspected, and thus it can be determined if it has sufficient cladding to fabricate a part after deposition process. In the present hybrid system in...
null
null
null
null
null
null
['Fessler, J.R.', 'Merz, R.', 'Nickel, A.H', 'Prinz, F.B.', 'Weiss, L.E.']
2018-11-09T16:12:09Z
2018-11-09T16:12:09Z
1996
Mechanical Engineering
doi:10.15781/T29Z90X7D
http://hdl.handle.net/2152/69928
eng
1996 International Solid Freeform Fabrication Symposium
Open
['SDM', 'CAD', 'SFF']
Laser Deposition of Metals for Shape Deposition Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/c471eccb-cc18-49ee-b74e-d5a84e5a4c90/download
null
A laser/powder deposition process has been added to the Shape Deposition Manufacturing system at Stanford University. This process is more robust than previous SDM metal deposition processes, consistently producing fully dense, near-net shape deposits with excellent material properties Material is deposited by scanning...
null
null
null
null
null
null
['Ruizpalacios, R.', 'Kyogoku, H.', 'Sriram, V.', 'Wood, K.L.', 'Beaman, J.J.']
2019-11-21T18:17:17Z
2019-11-21T18:17:17Z
2003
Mechanical Engineering
null
['https://hdl.handle.net/2152/78554', 'http://dx.doi.org/10.26153/tsw/5610']
eng
2003 International Solid Freeform Fabrication Symposium
Open
Direct-Write
Laser Direct-Write of Nanoporous Optical Coatings: Preliminary Results
Conference paper
https://repositories.lib.utexas.edu//bitstreams/d67c4cbe-cdde-43aa-94ec-8c49abe5f2de/download
null
null
null
null
null
null
null
null
['Liu, Z.C.', 'Ning, F.D.', 'Cong, W.L.', 'Zhang, H.C.']
2021-10-28T19:14:22Z
2021-10-28T19:14:22Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89673
eng
2016 International Solid Freeform Fabrication Symposium
Open
['laser engineered net shaping', 'energy consumption', 'laser power', 'scanning speed', 'powder feed rate']
Laser Engineered Net Shaping of Metal Powders: A Study on Energy Consumption
Conference paper
https://repositories.lib.utexas.edu//bitstreams/f47064b2-1b29-46f1-a5fb-cb78399c6a02/download
University of Texas at Austin
With the increasing awareness of environmental protection and sustainable manufacturing, the energy consumptions and potential environmental impacts of laser additive manufacturing (LAM) technology has been attracting more and more concerns. This paper firstly investigates the energy distributions of different modules ...
null
null
null
null
null
null
['Kobryn, Pamela A.', 'Semiatin, S. Lee']
2019-09-20T15:19:16Z
2019-09-20T15:19:16Z
2000
Mechanical Engineering
null
['https://hdl.handle.net/2152/75920', 'http://dx.doi.org/10.26153/tsw/3019']
eng
2000 International Solid Freeform Fabrication Symposium
Open
Laser
Laser Forming of Ti-6Al-4V: Research Overview 58
Conference paper
https://repositories.lib.utexas.edu//bitstreams/1105956f-4827-459c-a498-6aa8fc7d98da/download
null
Laser forming is a solid-freeform-fabrication process which is being investigated for titanium-component manufacturing based on its cost-reduction potential. However, before it can be transitioned to production, the relationships between processing parameters, input materials, and deposit properties must be understood....
null
null
null
null
null
null
['Ramos, J.A.', 'Bourell, D.L.', 'Govindaraju, M.R.']
2019-10-18T17:15:13Z
2019-10-18T17:15:13Z
2001
Mechanical Engineering
null
['https://hdl.handle.net/2152/76268', 'http://dx.doi.org/10.26153/tsw/3357']
eng
2001 International Solid Freeform Fabrication Symposium
Open
Coatings
Laser Fusion Coatings of Functional Parts
Conference paper
https://repositories.lib.utexas.edu//bitstreams/a6be9a83-8f67-487f-ab45-b79f91e9ff8e/download
null
Surface characteristics of functional parts made by Solid Freeform Fabrication techniques such as Selective Laser Sintering (SLS), Stereolitography Apparatus (SLA) or other fabrication techniques can be enhanced by the application of multi-element based laser fused coatings. Environmental protection and wear resistance...
The authors gratefully acknowledge the support of the Ballistic Missile Defense Organization (BMDO) for this work. The research is being funded under the Small Business Innovative Research (SBIR) Program and managed by the Wright-Patterson Air Force Base, Dayton, Ohio.
null
null
null
null
null
Edinger, R.
2021-11-16T14:55:09Z
2021-11-16T14:55:09Z
2018
Mechanical Engineering
null
['https://hdl.handle.net/2152/90302', 'http://dx.doi.org/10.26153/tsw/17223']
eng
2018 International Solid Freeform Fabrication Symposium
Open
['beam focus', 'beam spot size', 'beam deflection', 'laser heating', 'electron beam gun', 'electron beam additive manufacturing']
Laser Heated Electron Beam Gun Optimization to Improve Additive Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/89b02b8f-314b-4511-b618-20d3df005523/download
University of Texas at Austin
Electron Beam Additive Manufacturing requires to improve electron gun characteristics to become a highly competitive manufacturing process. Our work targets the optimization of beam focusing to reduce the beam spot size, to improve the beam deflection system resulting in higher positioning accuracy, to refine thermal s...
null
null
null
null
null
null
['Krantz, Justin T.', 'Lough, Cody S.', 'Brown, Ben', 'Yang, Jinyu', 'Go, David B.', 'Landers, Robert G.', 'Kinzel, Edward C.']
2024-03-26T21:20:55Z
2024-03-26T21:20:55Z
2023
Mechanical Engineering
null
['https://hdl.handle.net/2152/124414', 'https://doi.org/10.26153/tsw/51022']
en_US
2023 International Solid Freeform Fabrication Symposium
Open
['in-situ monitoring', 'laser power bed fusion', 'spectroscopy', 'additive manufacturing']
Laser Induced Breakdown Spectroscopy for In-Situ Monitoring of Laser Powder Bed Fusion Processing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/ee7efcbf-99f5-4dcb-96ae-5aedf8206198/download
University of Texas at Austin
A major challenge for laser powder bed fusion processes is identifying and addressing flaws in the as-built part. In-situ monitoring of the magnitude of radiation emitted from the vicinity of the melt pool largely corresponds to the temperature field. This has been correlated with the local porosity and microstructure ...
null
null
null
null
null
null
['Berez, Jaime', 'Saldaña, Christopher']
2023-01-27T13:45:06Z
2023-01-27T13:45:06Z
2022
Mechanical Engineering
null
['https://hdl.handle.net/2152/117330', 'http://dx.doi.org/10.26153/tsw/44211']
eng
2022 International Solid Freeform Fabrication Symposium
Open
['laser powder bed fusion (LPBF)', 'powder bed measurement', 'topography', 'laser line profiler', 'surface texture']
Laser Line Profile Scanning for Powder Bed Topography Measurement
Conference paper
https://repositories.lib.utexas.edu//bitstreams/44cf0b7b-5b4b-4212-a421-92ca87760c11/download
null
The metal additive manufacturing (AM) method of laser powder bed fusion (LPBF) relies upon the formation of uniform, densely packed, and defect free powder layers. The direct measurement of as-spread powder layer quality is challenging owing to the fine size of the powder bed features and limited selection of instru...
null
null
null
null
null
null
['Gegel, M.', 'Nisbett, A.', 'Bristow, D.', 'Landers, R.G.']
2021-10-28T15:00:03Z
2021-10-28T15:00:03Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89659
eng
2016 International Solid Freeform Fabrication Symposium
Open
['laser metal deposition', 'laser line scanner', 'geometric profiles', 'Missouri University of Science and Technology']
Laser Line Scan Characterization of Geometric Profiles in Laser Metal Deposition
Conference paper
https://repositories.lib.utexas.edu//bitstreams/4cbe7e61-d4e3-457c-aeaa-5d38c585d305/download
University of Texas at Austin
Laser Metal Deposition (LMD) is an additive manufacturing process in which material is deposited by blowing powdered metal into a melt pool formed by a laser beam. When fabricating parts, the substrate is subjected to motion control such that the melt pool traces a prescribed path to form each part layer. Advantages of...
null
null
null
null
null
null
['Kyogoku, Hideki', 'Ramos, Jorge A.', 'Bourell, David L.']
2019-11-21T18:53:05Z
2019-11-21T18:53:05Z
2003
Mechanical Engineering
null
['https://hdl.handle.net/2152/78571', 'http://dx.doi.org/10.26153/tsw/5627']
eng
2003 International Solid Freeform Fabrication Symposium
Open
Ti-Ni Shape
Laser Melting of Ti-Ni Shape Memory Alloy
Conference paper
https://repositories.lib.utexas.edu//bitstreams/94e4c302-0fc8-450f-9393-c57da1a203cf/download
null
The applicability of laser melting in fabrication of Ti-Ni shape memory alloy was investigated experimentally. Elemental powders of Ti and Ni and mechanically alloyed (MA) TiNi powder were used to fabricate specimens. The effects of powder characteristics on the microstructure and shape memory characteristics of the al...
null
null
null
null
null
null
['Azizi, Arad', 'Schiffres, Scott N.']
2021-11-16T14:59:50Z
2021-11-16T14:59:50Z
2018
Mechanical Engineering
null
['https://hdl.handle.net/2152/90304', 'http://dx.doi.org/10.26153/tsw/17225']
eng
2018 International Solid Freeform Fabrication Symposium
Open
['material bonding', 'powder bed fusion', 'selective laser melting', 'SLM', 'laser material processing', 'graphite-metal bonding']
Laser Metal Additive Manufacturing on Graphite
Conference paper
https://repositories.lib.utexas.edu//bitstreams/494d8878-91d4-46c0-9558-86672599bbd9/download
University of Texas at Austin
Metal powders are typically directly fused to a metal substrate of similar composition in metal powder-bed fusion additive manufacturing. This work presents a process for printing a metal alloy directly on graphite, rather than a metal platform. This technology has attractive applications to heat transfer, as this proc...
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null
null
null
null
null
['Karnati, S.', 'Sparks, T.E.', 'Liou, F.', 'Newkirk, J.W.', 'Taminger, K.M.B.', 'Seufzer, W.J.']
2021-10-20T22:37:05Z
2021-10-20T22:37:05Z
2015
Mechanical Engineering
null
https://hdl.handle.net/2152/89378
eng
2015 International Solid Freeform Fabrication Symposium
Open
['functionally gradient materials', 'copper-nickel', 'Laser Metal Deposition']
Laser Metal Deposition of Functionally Gradient Materials from Elemental Copper and Nickel Powders
Conference paper
https://repositories.lib.utexas.edu//bitstreams/ae73da4f-e234-4d42-8ceb-b8a935e1fa6b/download
University of Texas at Austin
This work deals with the planning and fabrication of a functionally gradient copper-nickel composition via Laser Metal Deposition (LMD). Various compositions of copper and nickel were made by blending different weight percentages which were then sequentially deposited to fabricate functionally gradient copper-nickel th...
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null
null
null
null
null
['Streek, A.', 'Regenfuss, P.', 'Ebert, R.', 'Exner, H.']
2020-03-11T15:34:38Z
2020-03-11T15:34:38Z
9/10/08
Mechanical Engineering
null
['https://hdl.handle.net/2152/80254', 'http://dx.doi.org/10.26153/tsw/7273']
eng
2008 International Solid Freeform Fabrication Symposium
Open
Laser micro sintering
Laser Micro Sintering – A Quality Leap through Improvement of Powder Packing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/6568fd0d-6353-48e0-bea6-6dcf66d490ef/download
null
Laser micro sintering, a modification of selective laser sintering for freeform fabrication of micro-parts, was continuously upgraded since its first application. Poor density of the powder layers has been a persisting problem that had to be dealt with from the beginning. One solution was the application of high intens...
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null
null
null
null
null
['Yeung, H.', 'Neira, J.', 'Lane, B.', 'Fox, J.', 'Lopez, F.']
2021-10-26T18:04:44Z
2021-10-26T18:04:44Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89543
eng
2016 International Solid Freeform Fabrication Symposium
Open
['powder bed fusion', 'additive manufacturing', 'laser scan path', 'powder control', 'G-code']
Laser Path Planning and Power Control Strategies for Powder Bed Fusion Systems
Conference paper
https://repositories.lib.utexas.edu//bitstreams/dbe01770-8482-40a5-ad07-29ea493b1bb2/download
University of Texas at Austin
In laser powder bed fusion additive manufacturing (AM) process, laser scan path, velocity, and power are some of the most important parameters affecting the build quality. Control strategies for laser path and power are implemented and tested on a prototype testbed based on industrial standard G-code type programming l...
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null
null
null
null
null
['Laoui, Tahar', 'Wang, Xiaochuan', 'Childs, T.H.C.', 'Kruth, Jean-Pierre', 'Froyen, Ludo']
2019-09-23T17:01:22Z
2019-09-23T17:01:22Z
2000
Mechanical Engineering
null
['https://hdl.handle.net/2152/75972', 'http://dx.doi.org/10.26153/tsw/3071']
eng
2000 International Solid Freeform Fabrication Symposium
Open
Penetration
Laser Penetration in a Powder Bed During Selective Laser Sintering of Metal Powders: Simulations Versus Experiments 453
Conference paper
https://repositories.lib.utexas.edu//bitstreams/e75e8ef2-11b7-4b40-927c-687dd312efe7/download
null
To gain a better understanding and control of the Selective Laser Sintering (SLS) process, more fundamental and modeling work is needed. A simple analytical ray-tracing model has been developed to simulate the energy absorption and penetration in SLS. The model is applied to FeCu and WC-Co powder mixtures, irradiated b...
This research is supported by the national fund IUAP/PAI P4/33.
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null
null
null
null
['Wang, Hongyun', 'Bourell, David', 'Beaman, Joseph J.']
2019-02-18T17:47:36Z
2019-02-18T17:47:36Z
1998
Mechanical Engineering
null
['https://hdl.handle.net/2152/73394', 'http://dx.doi.org/10.26153/tsw/546']
eng
1998 International Solid Freeform Fabrication Symposium
Open
['CAD', 'CO2']
Laser Polishing of Silica Rods
Conference paper
https://repositories.lib.utexas.edu//bitstreams/319c6356-09fb-47aa-9619-ba1bd45d7247/download
null
Lasers have been widely used in surface modification. In this research a CO2 continuous wave laser has been used to polish the slot surface of the silica rods. The strong absorption of the lO.6 um C02 radiation by the silica surface promotes the softening of a very thin layer of material that flows under the action of ...
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null
null
null
null
null
['Uddin, Syed Zia', 'Espalin, David', 'Mireles, Jorge', 'Morton, Philip', 'Terrazas, Cesar', 'Collins, Shane', 'Murr, Lawrence E.', 'Wicker, Ryan']
2021-11-02T14:44:34Z
2021-11-02T14:44:34Z
2017
Mechanical Engineering
null
https://hdl.handle.net/2152/89814
eng
2017 International Solid Freeform Fabrication Symposium
Open
['aluminum alloy 6061', 'laser melting powder bed fusion', 'crack-free', 'induction heating', 'high density']
Laser Powder Bed Fusion Fabricated and Characterization of Crack-Free Aluminum Alloy 6061 Using In-Process Powder Bed Induction Heating
Conference paper
https://repositories.lib.utexas.edu//bitstreams/6d92b0c2-b404-4f72-b783-0c07a684a213/download
University of Texas at Austin
A parameter development study for pre-alloyed aluminum alloy 6061 (AA6061) was carried out using an open-architecture powder bed laser melting (LM) technology with capabilities of induction heating for raising the powder bed temperature. Cube specimens (10 mm on each side) were used for parameter development with varia...
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null
null
null
null
null
['Oztan, Cagri', 'Fodran, Eric', 'Barnes, Eric', 'LeBlanc, Saniya']
2023-01-20T14:18:31Z
2023-01-20T14:18:31Z
2022
Mechanical Engineering
null
['https://hdl.handle.net/2152/117257', 'http://dx.doi.org/10.26153/tsw/44138']
eng
2022 International Solid Freeform Fabrication Symposium
Open
laser powder bed fusion
Laser Powder Bed Fusion of Bismuth Telluride: Process-Structure-Property Relationships
Conference paper
https://repositories.lib.utexas.edu//bitstreams/d4323d95-23eb-4fb4-825a-5d3f178fb97d/download
null
Thermoelectric generators possess a vast potential for waste heat recovery. Yet, the traditional fabrication methods of thermoelectric structures suffer from material loss and are limited to planar geometries. As a solution, laser additive manufacturing of thermoelectric materials has attracted considerable attentio...
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null
null
null
null
['Lantzsch, T.', 'Westphalen, T.', 'Tenbrock, C.', 'Traub, M.', 'Haefner, C.L.']
2021-12-07T18:38:26Z
2021-12-07T18:38:26Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90752', 'http://dx.doi.org/10.26153/tsw/17671']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['dual fiber laser array', 'fiexible optical system', '316L', 'stainless steel', 'laser powder bed fusion']
Laser Powder Bed Fusion of Stainless Steel 316L Using a Flexible Dual Fiber Laser Array
Conference paper
https://repositories.lib.utexas.edu//bitstreams/a8a964f0-c7fc-473b-9e0d-c1d361a4ce01/download
University of Texas at Austin
In recent years, Laser Powder Bed Fusion (LPBF) has become an industrially established manufacturing technique. State-of-the-art LPBF machines feature a combination of fiber lasers and galvanometer scanners due to their high dynamic and excellent focusability. To increase the productivity of LPBF machines the number of...
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null
null
null
null
null
['Yasa, Evren', 'Ozsoy, Andac', 'Tureyen, Erkan Bugra']
2021-12-06T22:04:35Z
2021-12-06T22:04:35Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90690', 'http://dx.doi.org/10.26153/tsw/17609']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['pulsed mode', 'laser powder bed fusion', 'point distance', 'exposure time', '17-4 PH stainless steel']
The Laser Powder Bed Fusion Process Development of 17-4 PH Stainless Steels with Pulsed-Wave Lasers
Conference paper
https://repositories.lib.utexas.edu//bitstreams/bf19e436-a60e-4894-a5fa-fc4e16c24e59/download
University of Texas at Austin
The main advantage of using Laser Powder Bed Fusion is its unique capability to produce highly complex geometries with intricate features. Besides other differences in powder coating and gas circulation among various LPBF machines, the type of laser (continuous or pulsed wave) is the most critical one. In addition to s...
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null
null
null
null
null
['Wimpenny, D.I.', 'Banerjee, S.', 'Jones, J.']
2021-09-29T14:43:52Z
2021-09-29T14:43:52Z
9/18/09
Mechanical Engineering
null
['https://hdl.handle.net/2152/88185', 'http://dx.doi.org/10.26153/tsw/15126']
eng
2009 International Solid Freeform Fabrication Symposium
Open
['polymeric toner powder deposition', 'flow control agents', 'charge control agents', 'laser printing']
Laser Printed Elastomeric Parts and Their Properties
Conference paper
https://repositories.lib.utexas.edu//bitstreams/45bbedd2-a6bb-469b-87c1-95927efec44e/download
University of Texas at Austin
The precise deposition of polymeric toner powder by laser printing is reliant on having powder particles with appropriate flow and uniform charge properties. Nanometer sized particles known as flow control agents (FCA) and charge control agents (CCA) are used to modify powder behaviour to provide the appropriate charac...
null
null
null
null
null
null
['Banerjee, Soumya', 'Wimpenny, David Ian']
2020-03-02T14:31:35Z
2020-03-02T14:31:35Z
9/14/06
Mechanical Engineering
null
['https://hdl.handle.net/2152/80125', 'http://dx.doi.org/10.26153/tsw/7146']
eng
2006 International Solid Freeform Fabrication Symposium
Open
Electrophotography
Laser Printing of Polymeric Materials
Conference paper
https://repositories.lib.utexas.edu//bitstreams/faccf79c-b314-4d14-a151-a767aca9751d/download
null
Electrophotography, the basis of photocopying and laser printing, is a reliable and well developed method of precisely depositing fine powders to form text or images. The process is highly adaptable to different types of materials; commercial toners are based on particular polymers but researchers have already shown th...
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null
null
null
null
null
['Kletetzka, I.', 'Kummert, C.', 'Schmid, H.-J.']
2021-12-01T21:58:29Z
2021-12-01T21:58:29Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90629', 'http://dx.doi.org/10.26153/tsw/17548']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['selective laser sintering', 'media transmission', 'design guidelines']
Laser Sintering Design Guidelines for Media Transmitting Components
Conference paper
https://repositories.lib.utexas.edu//bitstreams/2148c86f-13d3-4945-aed3-32bfd606c0ac/download
University of Texas at Austin
In automotive and other fields of application media transmitting components are made of plastics for reasons of weight and cost and complex, flow-optimized geometries are most desirable. Therefore, the laser sintering technology (SLS) is predestinated to manufacture these components as it offers a very high degree of d...
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null
null
null
null
null
['Niino, Toshiki', 'Oizumi, Shunsuke', 'Otsuki, Hiroyuki']
2020-03-10T15:32:47Z
2020-03-10T15:32:47Z
2007
Mechanical Engineering
null
['https://hdl.handle.net/2152/80217', 'http://dx.doi.org/10.26153/tsw/7236']
eng
2007 International Solid Freeform Fabrication Symposium
Open
laser sintering
Laser Sintering Fabrication of Highly Porous Models Utilizing Water Leachable Filler-Experimental Investigation into Process Parameters
Conference paper
https://repositories.lib.utexas.edu//bitstreams/b9a8f817-1a52-4b93-8420-1586fb0030b1/download
null
The authors are developing a laser sintering process to fabricate highly porous models with such high porosities as 90% and more. In the process, water-soluble filler is mixed with designated plastic powder and leached out after laser sintering process is finished to generate pores where the grains used to exist. Previ...
null
null
null
null
null
null
['Nelson, J.C.', 'Vail, N.K.', 'Barlow, J.W.']
2018-05-03T20:03:03Z
2018-05-03T20:03:03Z
1993
Mechanical Engineering
doi:10.15781/T2G737N0C
http://hdl.handle.net/2152/65080
null
1993 International Solid Freeform Fabrication Symposium
Open
['Department of Chemical Engineering', 'computer model', 'sintering model']
Laser Sintering Model for Composite Materials
Conference paper
https://repositories.lib.utexas.edu//bitstreams/baf23ea0-2511-468b-8742-fa46c371433c/download
null
A computer model for the sintering of ceramic/polymer composite materials has been established based on empirical sintering rate data. The model calculates sintering depths which result from variations in the operating parameters which include laser power, beam speed, scan spacing, scan vector length, and initial tempe...
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null
null
null
null
null
['Strobbe, D.', 'Van Puyvelde, P.', 'Kruth, J.-P.', 'Van Hooreweder, B.']
2021-11-11T16:04:13Z
2021-11-11T16:04:13Z
2018
Mechanical Engineering
null
['https://hdl.handle.net/2152/90228', 'http://dx.doi.org/10.26153/tsw/17149']
eng
2018 International Solid Freeform Fabrication Symposium
Open
['laser sintering', 'polyamides']
Laser Sintering of PA12/PA4,6 Polymer Composites
Conference paper
https://repositories.lib.utexas.edu//bitstreams/9b965a5a-1a40-4504-8a18-a2b59dbc98c8/download
University of Texas at Austin
This work investigates the laser sintering (LS) processing of polyamide-12/polyamide-4,6 composites and the performance of resulting parts. The coalescence and consolidation of the PA12/PA4,6 powder mixture are characterized. This demonstrates that at the LS processing window for PA12 (grade PA2200), the powder mixture...
null
null
null
null
null
null
['Zhang, Hui', 'Bourell, David L.', 'Guo, Yanling', 'Li, Jian', 'Zhang, Xiaodong', 'Zhuang, Yu', 'Li, Zhipeng']
2021-11-18T02:22:27Z
2021-11-18T02:22:27Z
2019
Mechanical Engineering
null
['https://hdl.handle.net/2152/90413', 'http://dx.doi.org/10.26153/tsw/17334']
eng
2019 International Solid Freeform Fabrication Symposium
Open
['laser sintering', 'biomass composites', 'pine-polylactic acid', 'mechanical properties', 'microstructures', 'dimensional accuracy']
Laser Sintering of Pine/Polylatic Acid Composites
Conference paper
https://repositories.lib.utexas.edu//bitstreams/3201703b-9cd6-45e2-ae6e-144c9f282dc1/download
University of Texas at Austin
A new powder feedstock composed of sustainable and degradable biomass composite material was proposed for laser sintering technology in this research. This biomass mixture, abbreviated P-PLA, is made up of mechanically mixed polylactic acid (PLA) powder and pine powder. The proper processing parameters were determined ...
null
null
null
null
null
null
['Imai, Y.', 'Kyogoku, H.', 'Shiraishi, K.']
2020-02-21T15:24:52Z
2020-02-21T15:24:52Z
2005
Mechanical Engineering
null
['https://hdl.handle.net/2152/80062', 'http://dx.doi.org/10.26153/tsw/7084']
eng
2005 International Solid Freeform Fabrication Symposium
Open
Selective laser sintering
Laser Sintering of Stainless Steel using Resin Powder
Conference paper
https://repositories.lib.utexas.edu//bitstreams/cbf8dde6-2455-4939-921b-04803c655ea3/download
null
We tried laser sintering of 316L stainless steel powder using resin powder. The laser sintering conditions such as laser power, scan speed and scan pitch with a YAG laser, and the influence of additional resin powder on the density and the tensile properties of the sintered alloy were investigated experimentally. The t...
null
null
null
null
null
null
['Wu, Ying-Jeng Engin', 'Beaman, Joseph J.']
2018-04-19T18:10:56Z
2018-04-19T18:10:56Z
1992
Mechanical Engineering
doi:10.15781/T2D21S21R
http://hdl.handle.net/2152/64398
eng
1992 International Solid Freeform Fabrication Symposium
Open
['Department of Mechanical Engineering', 'SFF application', 'three-dimensional']
Laser Tracking Control Implementation for SFF Applications
Conference paper
https://repositories.lib.utexas.edu//bitstreams/0a27e6c9-44c2-48b7-82db-070bed6eac7d/download
null
From a three-dimensional computer graphic model, Solid Freeform Fabrication produces solid objects directly without special tooling and human handling. In order to increas process productivity and accuracy, a time-efficient laser tracking control technique is needed. Based on the minimum time optimal control solution, ...
null
null
null
null
null
null
['Lu, Y.', 'Shao, D. B.', 'Chen, S. C.']
2020-02-13T20:28:04Z
2020-02-13T20:28:04Z
2004
Mechanical Engineering
null
['https://hdl.handle.net/2152/79974', 'http://dx.doi.org/10.26153/tsw/6999']
eng
2004 International Solid Freeform Fabrication Symposium
Open
laser-assisted photothermal
Laser-assisted photothermal imprinting of nanocomposite
Conference paper
https://repositories.lib.utexas.edu//bitstreams/c9041c9a-7fbc-4e83-b41f-ada0e6795a71/download
null
We report on a laser-assisted photothermal imprinting method for directly patterning carbon nanofiber-reinforced polyethylene nanocomposite. A single laser pulse from a solid state Nd:YAG laser (10 ns pulse, 532 nm and 355 nm wavelengths) is used to melt/soften a thin skin layer of the polymer nanocomposite. Meanwhile,...
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null
null
null
null
null