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['Eiamsa-ard, Kunnayut', 'Nair, Hari Janardanan', 'Ren, Lan', 'Ruan, Jianzhong', 'Sparks, Todd', 'Liou, Frank W.']
2020-02-24T15:12:39Z
2020-02-24T15:12:39Z
8/3/05
Mechanical Engineering
null
['https://hdl.handle.net/2152/80079', 'http://dx.doi.org/10.26153/tsw/7100']
eng
2005 International Solid Freeform Fabrication Symposium
Open
Gas Tungsten Arc Welding
Part Repair using a Hybrid Manufacturing System
Conference paper
https://repositories.lib.utexas.edu//bitstreams/ca2d785e-91d6-476b-b017-d49f48daf254/download
null
Nowadays, part repair technology is gaining more interest from military and industries due to the benefit of cost reducing as well as time and energy saving. Traditionally, part repair is done in the repair department using welding process. The limitations of the traditional welding process are becoming more and more n...
null
null
null
null
null
null
['Grose, J.', 'Liao, A.', 'Tasnim, F.', 'Foong, C.S.', 'Cullinan, M.A.']
2024-03-26T20:08:29Z
2024-03-26T20:08:29Z
2023
Mechanical Engineering
null
['https://hdl.handle.net/2152/124387', 'https://doi.org/10.26153/tsw/50995']
en_US
2023 International Solid Freeform Fabrication Symposium
Open
['microscale selective laser sintering', 'heat zones', 'additive manufacturing']
PART SCALE SIMULATION OF HEAT AFFECTED ZONES FOR PARAMETER OPTIMIZATION IN A MICROSCALE SELECTIVE LASER SINTERING SYSTEM
Conference paper
https://repositories.lib.utexas.edu//bitstreams/19f30244-c06c-40a1-b18a-9c1c76fb04e1/download
University of Texas at Austin
The Microscale Selective Laser Sintering (μ-SLS) system can produce feature sizes on the order of a single micrometer, far smaller than existing metal additive technologies. Despite this advantage, there are challenges in producing reliable small-scale parts due to unwanted heat transfer in the nanoparticle bed. To add...
null
null
null
null
null
null
['Peng, Hao', 'Go, David B.', 'Billo, Rick', 'Gong, Shan', 'Ravi Shankar, M.', 'Aboud Gatrell, Bernice', 'Budzinski, Joseph', 'Ostiguy, Pierre', 'Attardo, Ross', 'Tomonto, Charles', 'Neidig, Joel', 'Hoelzle, David']
2021-10-26T19:15:12Z
2021-10-26T19:15:12Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89561
eng
2016 International Solid Freeform Fabrication Symposium
Open
['additive manufacturing', 'DMLS', 'thermal distortion', 'thermal stress', 'part orientation', 'support structure', 'quasi-static loading']
Part-Scale Model for Fast Prediction of Thermal Distortion in DMLS Additive Manufacturing Part 2: A Quasi-Static Thermomechanical Model
Conference paper
https://repositories.lib.utexas.edu//bitstreams/851e07fe-5648-437b-82de-7db495fdb7ba/download
University of Texas at Austin
The direct metal laser sintering (DMLS) additive manufacturing process can quickly produce complex parts with excellent mechanical properties. However, thermal stress accumulated in the layer-by-layer build cycles of DMLS may induce part distortion and even cause the failure of the whole build process. This paper is th...
null
null
null
null
null
null
['Johnston, Scott', 'Anderson, Rhonda', 'Storti, Duane']
2019-11-21T18:25:31Z
2019-11-21T18:25:31Z
2003
Mechanical Engineering
null
['https://hdl.handle.net/2152/78558', 'http://dx.doi.org/10.26153/tsw/5614']
eng
2003 International Solid Freeform Fabrication Symposium
Open
Steel Components
Particle Size Influence Upon Sintered Induced Strains Within 3DP� Stainless Steel Components
Conference paper
https://repositories.lib.utexas.edu//bitstreams/5fff2f6b-f754-4851-83ba-d93f5abbaa7e/download
null
Three-dimensional printing (3DP™ 1 ) is a layer-by-layer manufacturing process whereby a three-dimensional (3D) component is created by the distribution of a liquid binder onto a powder media. A 3DP™ process using stainless steel powder as its printing media requires post-printing thermal processing for debinding and s...
Financial support for this work is provided by the Office of Naval Research, Contract #N00014-C-00-0378.
null
null
null
null
null
['Sellers, R.', 'Gould, B.', 'Wolff, S.']
2021-12-06T23:17:52Z
2021-12-06T23:17:52Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90713', 'http://dx.doi.org/10.26153/tsw/17632']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['additive manufacturing', 'directed energy deposition', 'Ti-6Al-4V', 'x-ray imaging', 'thermal imaging', 'molybdenum', 'surface energy']
Particle-Melt Pool Interactions in Multi-Material Laser Based Directed Energy Deposition
Conference paper
https://repositories.lib.utexas.edu//bitstreams/ec057e63-1558-4e2d-a9ec-ffa02f738b85/download
University of Texas at Austin
Laser based metal directed energy deposition (DED) is an additive manufacturing process that is currently on the rise in the industry. However, there is still a knowledge gap in the understanding of fundamental interactions between particles and the melt pool in the DED process and how to change the parameters to alter...
null
null
null
null
null
null
['Moser, D.', 'Cullinan, M.', 'Murthy, J.']
2021-10-26T18:42:10Z
2021-10-26T18:42:10Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89553
eng
2016 International Solid Freeform Fabrication Symposium
Open
['melt modeling', 'selective laser melting', 'discrete element model', 'powder particles']
Particle-Scale Melt Modeling of the Selective Laser Melting Process
Conference paper
https://repositories.lib.utexas.edu//bitstreams/85151f2f-d375-4bb0-842e-3d13f94b88c5/download
University of Texas at Austin
In this work, a melting model is developed and implemented to simulate the melting of powder particles for Selective Laser Melting (SLS). A hybrid continuum-discrete methodology is used to model the melting process. A Discrete Element Model (DEM) is used to generate random packing structures of spherical particles. The...
null
null
null
null
null
null
['Narahara, Hiroyuki', 'Kawaguchi, Shinichiro', 'Suzuki, Hiroshi']
2019-10-23T15:03:35Z
2019-10-23T15:03:35Z
2002
Mechanical Engineering
null
['https://hdl.handle.net/2152/76753', 'http://dx.doi.org/10.26153/tsw/3842']
eng
2002 International Solid Freeform Fabrication Symposium
Open
Stereolithography
Parts Design and Manufacturing Process Support System Based on Stereolithography Manufacturing Knowledge Database
Conference paper
https://repositories.lib.utexas.edu//bitstreams/20b73d3a-8a66-41ce-8b1c-6016905470b1/download
null
Although rapid prototyping technology has a strong point that complex parts can be manufactured easily, it is difficult to satisfy further higher precision if designer isn't familiar with the technological know-how of the manufacture. This research aims to develop a design support system for realizing higher precision ...
null
null
null
null
null
null
['Chen, Xi', 'Zhang, Haiou', 'Hu, Jiannan', 'Xiao, Yu']
2021-11-18T18:18:38Z
2021-11-18T18:18:38Z
2019
Mechanical Engineering
null
['https://hdl.handle.net/2152/90454', 'http://dx.doi.org/10.26153/tsw/17375']
eng
2019 International Solid Freeform Fabrication Symposium
Open
['infrared thermography', 'stack temperature field', 'pixel width curve', 'defect detection', 'wire arc additive manufacturing']
A Passive On-Line Defect Detection Method for Wire and Arc Additive Manufacturing Based on Infrared Thermography
Conference paper
https://repositories.lib.utexas.edu//bitstreams/789b20d5-44ce-486c-8899-859e72bff663/download
University of Texas at Austin
According to the additive manufacturing process, this paper comes up with a passive infrared thermography non-destructive testing method based on the stack temperature field and pixel width curve. The temperature field of the arc-melting layer is collected in real-time, and the multi-frame temperature data stream is st...
null
null
null
null
null
null
['Geuy, Michael', 'Martin, Jay', 'Simpson, Timothy', 'Meisel, Nicholas']
2024-03-26T20:10:36Z
2024-03-26T20:10:36Z
2023
Mechanical Engineering
null
['https://hdl.handle.net/2152/124388', 'https://doi.org/10.26153/tsw/50996']
en_US
2022 International Solid Freeform Fabrication Symposium
Open
['robotic material extrusion', 'non-planar', 'additive manufacturing']
PATH PLANNING FOR NON-PLANAR ROBOTIC ADDITIVE MANUFACTURING
Conference paper
https://repositories.lib.utexas.edu//bitstreams/b76e63c0-fb07-46a6-980f-28c5b3965e90/download
University of Texas at Austin
As material extrusion additive manufacturing continues to mature, there is increasing need for an extrusion path planning (“slicing”) method that takes full advantage of the abilities of manydegree-of-freedom systems like those used in Robotic Material Extrusion (RoMEX). These systems can create engineering parts with ...
null
null
null
null
null
null
['Frank, Matthew C.', 'Joshi, Ashish', 'Anderson, Donald D.', 'Thomas, Thaddeus P.', 'Rudert, M. James', 'Tochigi, Yuki', 'Marsh, J. Lawrence', 'Brown, Thomas D.']
2021-10-01T00:28:23Z
2021-10-01T00:28:23Z
2010
Mechanical Engineering
null
['https://hdl.handle.net/2152/88309', 'http://dx.doi.org/10.26153/tsw/15250']
eng
2010 International Solid Freeform Fabrication Symposium
Open
['rapid machining', 'rapid prototyping', 'bone implants', 'surface texturing']
Patient-Specific Bone Implants using Subtractive Rapid Prototyping
Conference paper
https://repositories.lib.utexas.edu//bitstreams/5dcf002c-7b7d-4e7e-8fe1-8eb5d1442222/download
null
This research involves the development of rapid manufacturing for patient-specific bone implants using a Subtractive Rapid Prototyping process. The geometry of segmental defects in bone, resulting from traumatic injury or cancerous tumor resection, can be reverse-engineered from medical images (such as CT scans), and t...
null
null
null
null
null
null
['Himmer, T.', 'Stiles, E.', 'Techel, A.', 'Beyer, E.']
2020-02-20T19:37:32Z
2020-02-20T19:37:32Z
2005
Mechanical Engineering
null
https://hdl.handle.net/2152/80042
eng
2005 International Solid Freeform Fabrication Symposium
Open
Precise Cast Prototyping
PCPro a Novel Technology for Rapid Prototyping and Rapid Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/5973798d-595a-4c02-bb1c-d470d020c73d/download
null
PCPro stands for Precise Cast Prototyping, which is a combination of casting technologies and milling. This method was developed at Fraunhofer IWS in Dresden, Germany. It is patented in Germany [1] and is applied in the USA under US 10/794,936. The main goal for this development was to shorten the process chain for mak...
null
null
null
null
null
null
['Luo, M.', 'Tian, X.', 'Shang, J.', 'Zhu, W.', 'Li, D.']
2021-11-11T15:33:23Z
2021-11-11T15:33:23Z
2018
Mechanical Engineering
null
['https://hdl.handle.net/2152/90221', 'http://dx.doi.org/10.26153/tsw/17142']
eng
2018 International Solid Freeform Fabrication Symposium
Open
['PEEK', 'interlaminar shear strength', 'crystallinity', 'laser device', 'heat treatment', 'in-situ', 'fused deposition modeling']
PEEK High Performance Fused Deposition Modeling Manufacturing with Laser In-Situ Heat Treatment
Conference paper
https://repositories.lib.utexas.edu//bitstreams/97730456-cd5c-4b4d-986d-2fb757658379/download
University of Texas at Austin
Because of the thermal resistance, high mechanical properties, biocompatibility, PEEK have increasingly extended their application in medicals, aircraft, industrial fields and so on. In FDM, a low crystallinity can be got to limit volume contraction to avoid weak interlaminar bonding, which results in the conflict betw...
null
null
null
null
null
null
['Seppälä, J.', 'Rockel, D.', 'Hupfer, A.']
2021-10-18T20:08:46Z
2021-10-18T20:08:46Z
2014
Mechanical Engineering
null
https://hdl.handle.net/2152/89226
eng
2014 International Solid Freeform Fabrication Symposium
Open
['additive manufacturing', 'design method', 'aircraft engine', 'aircraft engine components']
Performance and Functionality Based Design Methods for Improved and Novel Aircraft Engine Components for Additive Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/9a11931a-e8d3-4eea-a9a8-9a2d9cd9d995/download
University of Texas at Austin
For aircraft engine manufacturers the technology of AM appears promising. AM provides the opportunity for a highly flexible and a cost effective part production. Furthermore AM offers new potentials and possibilities for lightweight designs. The implementation and applications of AM can be divided in three different st...
null
null
null
null
null
null
['Lane, B.', 'Grantham, S.', 'Yeung, H.', 'Zarobila, C.', 'Fox, J.']
2021-11-03T21:54:08Z
2021-11-03T21:54:08Z
2017
Mechanical Engineering
null
https://hdl.handle.net/2152/89944
eng
2017 International Solid Freeform Fabrication Symposium
Open
['process monitoring', 'sensors', 'metrology testbed', 'additive manufacturing', 'National Institute Standards and Technology', 'NIST']
Performance Characterization of Process Monitoring Sensors on the NIST Additive Manufacturing Metrology Testbed
Conference paper
https://repositories.lib.utexas.edu//bitstreams/7fc4b220-4e14-477d-b545-6fd3da83b43c/download
University of Texas at Austin
Researchers and equipment manufacturers are developing in-situ process monitoring techniques with the goal of qualifying additive manufacturing (AM) parts during a build, thereby accelerating the certification process. Co-axial melt pool monitoring (MPM) is one of the primary in-situ process monitoring methods implemen...
null
null
null
null
null
null
['Bitragunta, Venkata Sivaram', 'Sparks, Todd', 'Liou, Frank']
2021-10-20T20:19:39Z
2021-10-20T20:19:39Z
2015
Mechanical Engineering
null
https://hdl.handle.net/2152/89352
eng
2015 International Solid Freeform Fabrication Symposium
Open
['blown direct metal deposition process', 'perturbation frequency', 'disk feeders', 'deposit quality', 'surface roughness']
Performance Metric for Powder Feeder Systems in Additive Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/a4134f18-1bc5-49ca-a375-e1803860f1b7/download
University of Texas at Austin
null
null
This paper describes experiments that were carried out to determine the significance between measured surface roughness values of the deposits over theoretically calculated performance metric values.
null
null
null
null
['Jarrett, David O.', 'Gibert, James M.', 'Fadel, Georges M.']
2021-10-05T19:55:21Z
2021-10-05T19:55:21Z
2012
Mechanical Engineering
null
['https://hdl.handle.net/2152/88421', 'http://dx.doi.org/10.26153/tsw/15360']
eng
2012 International Solid Freeform Fabrication Symposium
Open
['ultrasonic additive manufacturing', 'metal matrix composites', 'steel wire reinforcements', 'aluminum matrix']
Performance of Stainless Steel AlSi 304 Wire Reinforced Metal Matrix Composites Made Using Ultrasonic Additive Manufacturing in Bending
Conference paper
https://repositories.lib.utexas.edu//bitstreams/bfcc0cbf-c171-48a7-a69f-35e85859ade3/download
University of Texas at Austin
Ultrasonic additive manufacturing (UAM) is a solid-state additive and subtractive manufacturing process that utilizes ultrasonic energy to produce layered metallic parts. The process is easily extended to create advanced multi-material structures, e.g., metal matrix composites, functionally graded metallic components, ...
null
null
null
null
null
null
['Yuan, Xiao', 'Zhang, Jing', 'Zahiri, Behnam', 'Khoshnevis, Behrokh']
2021-11-01T22:05:21Z
2021-11-01T22:05:21Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89773
eng
2016 International Solid Freeform Fabrication Symposium
Open
['contour crafting', 'additive manufacturing', 'sulfur concrete', 'space colonization']
Performance of Sulfur Concrete in Planetary Applications of Contour Crafting
Conference paper
https://repositories.lib.utexas.edu//bitstreams/68a911f7-14a9-4638-9444-fb0fea81bbe1/download
University of Texas at Austin
Sulfur concrete is a high potential composite material which meets NASA’s ISRU (In-Situ Resource Utilization) requirements for some Lunar and most Martian structure construction by means of Contour Crafting (CC). The performance of sulfur concrete is sensitive to its ingredients and to the variables in the thermal proc...
null
null
null
null
null
null
['Marchal, V.', 'Peryaut, F.', 'Zhang, Y.', 'Labed, N.']
2021-12-07T17:47:46Z
2021-12-07T17:47:46Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90734', 'http://dx.doi.org/10.26153/tsw/17653']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['continuous fiber printing', 'periodic homogenization', 'elastic properties']
A Periodic Homogenization Model Including Porosity to Predict Elastic Properties of 3D-Printed Continuous Carbon Fiber-Reinforced Composites
Conference paper
https://repositories.lib.utexas.edu//bitstreams/6b65890f-e579-4801-bbe5-a0f17124286d/download
University of Texas at Austin
Adding continuous carbon fiber into the Fused Filament Fabrication (FFF) process is critical to get reinforced composite structures with improved mechanical properties. However, it remains difficult for the designer to create optimized complex composite structures. Indeed, performing numerical simulations on these mate...
null
null
null
null
null
null
['Shigueoka, M.O.', 'de M. Junqueira, S.L.', 'Alves, T.A.', 'Volpato, N.']
2021-11-30T21:37:01Z
2021-11-30T21:37:01Z
2019
Mechanical Engineering
null
['https://hdl.handle.net/2152/90557', 'http://dx.doi.org/10.26153/tsw/17476']
eng
2019 International Solid Freeform Fabrication Symposium
Open
['porous media', 'permeability', 'material extrusion']
Permeability Analysis of Polymeric Porous Media Obtained by Material Extrusion Additive Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/d9686b1b-9e1c-45ed-85d2-14360a3d9a7d/download
University of Texas at Austin
Porous media (PM) are used in many applications, and their geometry and hydraulic properties are essential in flow analysis, especially in geology (oil and gas) and medical (tissue engineering) applications. Additive Manufacturing (AM) enables the production of planned porosity and the material extrusion AM allows work...
null
null
null
null
null
null
['Yardimci, M. Atif', 'Guceri, Selcuk I', 'Danforth, Stephen C.']
2018-10-10T15:50:28Z
2018-10-10T15:50:28Z
1995
Mechanical Engineering
doi:10.15781/T2NV99W2B
http://hdl.handle.net/2152/68757
eng
1995 International Solid Freeform Fabrication Symposium
Open
['FDM', 'stereolithography', 'laser-based methods']
A Phenomenological Numerical Model For Fused Deposition Processing of Particle Filled Parts
Conference paper
https://repositories.lib.utexas.edu//bitstreams/11db4dba-a999-4e4c-9eb9-fa2a30d6ad37/download
null
Fused Deposition ModelingTM utilizes the simple idea of melting, extrusion and resolidification of thermoplastic filaments. The introduction of particulate materials, especially ceramics and metals, will widen the range of capabilities of the process. The present study is directed to the development of a family of nume...
null
null
null
null
null
null
['Steinchen, W.', 'Kramer, B.', 'Kupfer, G.']
2018-11-02T13:53:40Z
2018-11-02T13:53:40Z
1995
Mechanical Engineering
doi:10.15781/T2Z02ZV09
http://hdl.handle.net/2152/69327
eng
1995 International Solid Freeform Fabrication Symposium
Open
['stereolithography', 'photoelastic', '3D Systems']
Photoelastic Investigation Using New STL-Resins
Conference paper
https://repositories.lib.utexas.edu//bitstreams/41508cf2-e773-46dc-a1c0-b0fd47b5d9b2/download
null
Stereolithography is not only ideal to study the function and the design of a simple or complex component, but also for stress and strain analysis by means of photoelasticity. The basis for using Stereolithograpy components is the biremngent property of the photoPOIYffiers, which has been discovered in 1991 in the Lab ...
null
null
null
null
null
null
['Kim, Young Hyun', 'Lim, Jong Seon', 'Lee, In Hwan', 'Kim, Ho-Chan']
2021-09-29T17:08:09Z
2021-09-29T17:08:09Z
2009
Mechanical Engineering
null
['https://hdl.handle.net/2152/88190', 'http://dx.doi.org/10.26153/tsw/15131']
eng
2009 International Solid Freeform Fabrication Symposium
Open
['photopolymer solidification', 'stereolithography process', 'laser exposure conditions']
Photopolymer Solidification for Inclined Laser Exposure Conditions
Conference paper
https://repositories.lib.utexas.edu//bitstreams/768b557a-5ded-4a09-aded-aff72b5fdc38/download
University of Texas at Austin
It has been reported that the photopolymer solidification in the stereolithogrpahy process is mainly depended on the laser exposure conditions such as laser power and scanning speed. However, they were focused on the vertical laser exposure conditions. In this research, we developed a mathematical model for the photopo...
null
null
null
null
null
null
['Chartoff, Richard P.', 'Du, Jin']
2018-11-02T16:30:30Z
2018-11-02T16:30:30Z
1995
Mechanical Engineering
doi:10.15781/T2NG4HB5D
http://hdl.handle.net/2152/69337
eng
1995 International Solid Freeform Fabrication Symposium
Open
['UV laser beam', 'SLA process', 'stereolithography resins']
Photopolymerization Reaction Rates By Reflectance Real Time Infrared Spectroscopy: Application To Stereolithography Resins
Conference paper
https://repositories.lib.utexas.edu//bitstreams/bc98602e-3357-48c2-96c3-7232419a8769/download
null
An advanced real time infrared technique for studying the isothermal in-situ cure of ultra-fast photopolymerization reactions has been developed. The method, referred to as reflectance real time infrared (RRTIR), involves time resolved IR analysis by reflected IR radiation while a resin sample is being exposed to a UV ...
null
null
null
null
null
null
['Olubummo, Adekunle', 'Zhao, Lihua', 'Hartman, Aja', 'Tom, Howard', 'Zhao, Yan', 'Wycoff, Kyle']
2024-03-25T22:29:25Z
2024-03-25T22:29:25Z
2023
Mechanical Engineering
null
['https://hdl.handle.net/2152/124322', 'https://doi.org/10.26153/tsw/50930']
en_US
2023 International Solid Freeform Fabrication Symposium
Open
['nickel dithiolene', '3D printing', 'bleaching', 'additive manufacturing']
Photothermal Bleaching of Nickel Dithiolene for Bright Multi-colored 3D Printed Parts
Conference paper
https://repositories.lib.utexas.edu//bitstreams/889a6490-9196-488f-96bd-8c61f249ceb7/download
University of Texas at Austin
HP’s Multi Jet Fusion is a powder bed fusion 3D printing technology that utilizes a carbon-based radiation absorber in combination with a near infrared (NIR) light source to facilitate the fusion of polymer powder in a layer-by-layer fashion to generate 3D parts. Most available carbon-based and NIR radiation absorbers ...
null
null
null
null
null
null
['Hong, Zhen', 'Wang, Zhiping', 'Deng, Sihao', 'Zhang, Yicha', 'Bernard, Alain']
2021-12-06T23:30:01Z
2021-12-06T23:30:01Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90717', 'http://dx.doi.org/10.26153/tsw/17636']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['toolpath optimization', 'profile-based sweep', 'hybrid additive manufacturing', 'HAM']
Physical Deposition Profile Based Toolpath Generation and Optimization for Additive Volume Building in Hybrid Additive Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/d6e54ab1-a349-4cd1-bf1c-50d5bcbb2bf5/download
University of Texas at Austin
In hybrid additive manufacturing (HAM), toolpaths affect the volume building and removing during the sequential or iterative hybrid processing since they control the deposition nozzle or cutting tools. In sequential hybrid additive manufacturing, toolpaths for additive manufacturing module define the volume directly de...
null
null
null
null
null
null
['Ahn, S.', 'Murphy, J.', 'Ramos, J.', 'Beaman, J.J.']
2019-10-18T16:22:43Z
2019-10-18T16:22:43Z
2001
Mechanical Engineering
null
['https://hdl.handle.net/2152/76252', 'http://dx.doi.org/10.26153/tsw/3341']
eng
2001 International Solid Freeform Fabrication Symposium
Open
Melting
Physical Modeling for Dynamic Control of Melting Process in Direct-SLS
Conference paper
https://repositories.lib.utexas.edu//bitstreams/33ba8a4c-e37a-40ac-a0bd-ba5a22ff1340/download
null
During the melting process by laser irradiation, it is essential to understand the phase change processes to get high quality Direct SLS parts especially when highorder scanning paths are needed. This process is a transient three -dimensional heat conduction problem with a moving heat source and a moving phase boundary...
null
null
null
null
null
null
['Awenlimobor, Aigbe', 'Wang, Zhaogui', 'Smith, Douglas E.']
2021-12-07T17:53:08Z
2021-12-07T17:53:08Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90736', 'http://dx.doi.org/10.26153/tsw/17655']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['fiber simulation', 'fiber motion', 'finite element analysis', 'large-scale additive manufacturing', 'polymer deposition', 'printed beads']
Physical Modeling: Simulation of Micro-Void Development within Large Scale Polymer Composite Deposition Beads
Conference paper
https://repositories.lib.utexas.edu//bitstreams/63bc40c1-0aca-4ba8-b1cb-9f1ffeeeb583/download
University of Texas at Austin
Short carbon fiber composites are used in large-scale polymer deposition additive manufacturing due to their increased stiffness and strength and reduced thermal expansion and print distortion. While much attention has been given to interlayer properties, less is known about bead microstructure, including the effect th...
null
null
null
null
null
null
['Mensch, Cole', 'Zhou, Wenchao', 'Sha, Zhenghui']
2024-03-26T21:37:31Z
2024-03-26T21:37:31Z
2023
Mechanical Engineering
null
['https://hdl.handle.net/2152/124422', 'https://doi.org/10.26153/tsw/51030']
en_US
2023 International Solid Freeform Fabrication Symposium
Open
['job placement', 'cooperative 3D printing', 'additive manufacturing']
PHYSICAL VALIDATION OF JOB PLACEMENT OPTIMIZATION IN COOPERATIVE 3D PRINTING
Conference paper
https://repositories.lib.utexas.edu//bitstreams/3326e1ee-4481-4086-8d8c-bd3722f3a487/download
University of Texas at Austin
Cooperative 3D printing (C3DP) is an emerging technology designed to overcome the limitations of traditional 3D printing, including speed and scalability. C3DP achieves this by partitioning prints into smaller jobs, e.g., chunks, and assigning them to a team of mobile 3D printers that work cooperatively in parallel all...
null
null
null
null
null
null
['Gao, Fuquan', 'Sonin, Ain A.']
2018-05-03T19:22:52Z
2018-05-03T19:22:52Z
1993
Mechanical Engineering
doi:10.15781/T2NV99T9T
http://hdl.handle.net/2152/65063
eng
1993 International Solid Freeform Fabrication Symposium
Open
['Department of Mechanical Engineering', 'digital microfabrication', '3D']
The Physics of Digital Microfabrication with Molten Microdrops
Conference paper
https://repositories.lib.utexas.edu//bitstreams/fede82b5-2da5-4d1a-b317-b1065f811e8a/download
null
Precise deposition of molten microdrops under controlled thermal conditions provides a means of 3D "digital microfabrication" , microdrop by microdrop, under complete computer control, much in the same way as 2D hard copy is obtained by ink-jet printing. This paper describes some results from a study of the basic modes...
null
null
null
null
null
null
['Boulger, Alex M.', 'Chesser, Phillip C.', 'Post, Brian K.', 'Roschli, Alex', 'Hilton, Joshua', 'Welcome, Connor', 'Tsiamis, Nikolaos Y.', 'Love, Lonnie J.', 'Gaul, Katherine T.', 'Rhyne, Breanna J.']
2021-11-15T22:09:41Z
2021-11-15T22:09:41Z
2018
Mechanical Engineering
null
['https://hdl.handle.net/2152/90288', 'http://dx.doi.org/10.26153/tsw/17209']
eng
2018 International Solid Freeform Fabrication Symposium
Open
['pick and place', 'fiducials', 'robotic actuator', 'big area additive manufacturing']
Pick and Place Robotic Actuator for Big Area Additive Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/d8b01f83-cb7d-42eb-92de-e0d9dc58da64/download
University of Texas at Austin
Oak Ridge National Laboratory’s Manufacturing Demonstration Facility has created a system that works in tandem with an existing large-scale additive manufacturing (AM) system to ‘pick and place’ custom components into a part as it is printed. Large-scale AM leaves a layered surface finish and is typically post-processe...
null
null
null
null
null
null
Marusak, Ronald E.
2018-05-03T17:09:40Z
2018-05-03T17:09:40Z
1993
Mechanical Engineering
doi:10.15781/T2H98ZX0J
http://hdl.handle.net/2152/65041
eng
1993 International Solid Freeform Fabrication Symposium
Open
['ink-jet printing', 'TAB', 'metal printer']
Picoliter Solder Droplet Dispensing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/531cddb4-6ef3-45b5-8df9-c252c5a89703/download
null
A device based on ink-jet printing technology was used to produce and place molten solder droplets, approximately 25-125pm in diameter, onto substrates. The advantages of an ink-jet based system are direct production of metallic objects, no postcure, low cost, and the repeatability and resolution for small feature size...
null
null
null
null
null
null
['Evans, Emmeline', 'McComb, Christopher']
2021-12-01T21:35:24Z
2021-12-01T21:35:24Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90621', 'http://dx.doi.org/10.26153/tsw/17540']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['3D printing', 'PLA claves', 'wooden claves', 'claves', 'vibrations', 'frequency']
Pitch Imperfect: Designing 3D Printed Claves to Mimic the Sounds of Their Wooden Counterparts
Conference paper
https://repositories.lib.utexas.edu//bitstreams/2ac836af-02e2-4a05-9430-43252e09f864/download
University of Texas at Austin
Despite the benefits afforded students by music education, public schools operating on insufficient budgets often cut music programs to reduce expenses. Students deserve access to high quality instruments, regardless of socioeconomic status or district funding. Therefore, the goal of this research is to develop 3D prin...
null
null
null
null
null
null
['Ghazanfari, Amir', 'Li, Wenbin', 'Leu, Ming C.', 'Landers, Robert G.']
2021-10-21T18:23:53Z
2021-10-21T18:23:53Z
2015
Mechanical Engineering
null
https://hdl.handle.net/2152/89419
eng
2015 International Solid Freeform Fabrication Symposium
Open
['horizontal staircase effect', 'freeform extrusion fabrication', '3D parts', 'adaptive rastering']
Planning Freeform Extrusion Fabrication Processes with Consideration of Horizontal Staircase Effect
Conference paper
https://repositories.lib.utexas.edu//bitstreams/3331da7f-664d-44b2-93b6-8975c2bea16a/download
University of Texas at Austin
An algorithm has been developed to estimate the “horizontal” staircase effect and a technique is proposed to reduce this type of geometrical error for freeform extrusion fabrication processes of 3D “solid” parts. The adaptive rastering technique, proposed in this paper, analyzes the geometry of each layer and changes t...
null
null
null
null
null
null
['Yan, Jingyuan', 'Battiato, Ilenia', 'Fadel, Georges M.']
2021-10-26T18:18:58Z
2021-10-26T18:18:58Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89549
eng
2016 International Solid Freeform Fabrication Symposium
Open
['functionally graded material', 'direct metal deposition', '2D model', 'thin-walled parts', 'process parameters']
Planning the Process Parameters During Direct Metal Deposition of Functionally Graded Thin-Walled Parts Based on a 2D Model
Conference paper
https://repositories.lib.utexas.edu//bitstreams/e5f3cff5-ec38-4fca-bbe9-1d3aea69e161/download
University of Texas at Austin
The need for functionally graded material (FGM) parts has surfaced with the development of material science and additive manufacturing techniques. Direct Metal Deposition (DMD) processes can locally deposit different metallic powders to produce FGM parts. Yet inappropriate mixing of materials without considering the in...
null
null
null
null
null
null
['Holzman, Noah', 'Francis, Lorraine']
2021-11-02T19:17:04Z
2021-11-02T19:17:04Z
2017
Mechanical Engineering
null
https://hdl.handle.net/2152/89870
eng
2017 International Solid Freeform Fabrication Symposium
Open
['pneumatic system', 'direct write 3D printing', 'direct write printing']
Pneumatic System Design for Direct Write 3D Printing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/86da84df-3e20-405e-95aa-066bcb5d3a0c/download
University of Texas at Austin
Direct write 3D printing methods are interesting due to the diverse palette of materials available for the process. In this work, a pneumatic system for direct write printing is built using off-the-shelf hardware and synchronized with an open-source firmware for motion control. The time to steady-state pressure of the ...
null
null
null
null
null
null
['Lao, S. C.', 'Koo, J. H.', 'Yong, W.', 'Lam, C.', 'Zhou, J.', 'Moon, T.', 'Piccione, P. M.', 'Wissler, G.', 'Pilato, L.', 'Luo, Z. P.']
2020-03-10T17:16:43Z
2020-03-10T17:16:43Z
2008
Mechanical Engineering
null
['https://hdl.handle.net/2152/80232', 'http://dx.doi.org/10.26153/tsw/7251']
eng
2008 International Solid Freeform Fabrication Symposium
Open
selective laser sintering
Polyamide 11-Carbon Nanotubes Nanocomposites: Preliminary Investigation
Conference paper
https://repositories.lib.utexas.edu//bitstreams/c2ad1caf-162c-42b1-afeb-96024e104446/download
null
The objective of this research is to develop an improved polyamide 11 (PA11) polymer with enhanced flame retardancy, thermal, and mechanical properties for selective laser sintering (SLS) rapid manufacturing. In the present study, a nanophase was introduced into polyamide 11 via twin screw extrusion. Arkema Rilsan® pol...
null
null
null
null
null
null
['Lao, S.C.', 'Kan, M.F.', 'Lam, C.K.', 'Chen, D.Z.', 'Koo, J.H.', 'Moon, T.', 'Londa, M.', 'Takatsuka, T.', 'Kuramoto, E.', 'Wissler, G.', 'Pilato, L.', 'Luo, Z.P.']
2021-09-30T18:25:10Z
2021-09-30T18:25:10Z
2010
Mechanical Engineering
null
['https://hdl.handle.net/2152/88270', 'http://dx.doi.org/10.26153/tsw/15211']
eng
2010 International Solid Freeform Fabrication Symposium
Open
['multifunctionial polyamide 11 polymer', 'enhanced properties', 'selective laser sintering', 'rapid manufacturing', 'nanotechnology', 'multi-wall carbon nanotubes', 'nanocomposites']
Polyamide 11-Carbon Nanotubes Nanocomposites: Processing, Morphological, and Property Characterization
Conference paper
https://repositories.lib.utexas.edu//bitstreams/7981e45c-bc53-4824-bfc8-1261c74c17dc/download
University of Texas at Austin
The objective of this research is to develop a multifunctional polyamide 11 (PA11) polymer with enhanced electrical, thermal, mechanical, and flammability properties for selective laser sintering (SLS) rapid manufacturing through the use of nanotechnology. In the present study, a nanophase was introduced into PA11 powd...
null
null
null
null
null
null
['Koo, J. H.', 'Lao, S.', 'Ngyuen, K.', 'Cheng, J.', 'Pilato, L.', 'Wissler, G.', 'Ervin, M.']
2020-03-02T14:37:01Z
2020-03-02T14:37:01Z
2006
Mechanical Engineering
null
['https://hdl.handle.net/2152/80127', 'http://dx.doi.org/10.26153/tsw/7148']
eng
2006 International Solid Freeform Fabrication Symposium
Open
Wide angle X-ray diffraction
Polyamide Nanocomposites for Selective Laser Sintering
Conference paper
https://repositories.lib.utexas.edu//bitstreams/26576f56-0c88-4d2a-97cf-40e9b13605fe/download
null
Current polyamide 11 and 12 are lacking in fire retardancy and high strength/high heat resistance characteristics for a plethora of finished parts that are desired and required for performance driven applications. It is anticipated that nanomodification of polyamide 11 and 12 will result in enhanced polymer performance...
null
null
null
null
null
null
['McMorrow, Brain', 'Chartoff, Richard', 'Lucas, Pierre', 'Richardson, Wade']
2020-02-20T21:07:06Z
2020-02-20T21:07:06Z
2005
Mechanical Engineering
null
https://hdl.handle.net/2152/80055
eng
2005 International Solid Freeform Fabrication Symposium
Open
Solid Freeform Fabrication
Polymer Matrix Nanocomposites by Inkjet Printing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/263bc2e5-d492-4c9d-8fcc-25e9f0f719c0/download
null
This paper describes work on a continuing project to form functional composites that contain ceramic nanoparticles using a Solid Freeform Fabrication (SFF) inkjet printing method. The process involves inkjet deposition of monomer/particle suspensions in layers followed by curing each layer in sequence using UV radiatio...
null
null
null
null
null
null
['Hüsler, A.', 'Wildman, R.D.', 'Alexander, M.R.']
2021-10-21T21:01:10Z
2021-10-21T21:01:10Z
2015
Mechanical Engineering
null
https://hdl.handle.net/2152/89447
eng
2015 International Solid Freeform Fabrication Symposium
Open
['inkjet printing', 'polymer particle formation', 'biodegradable', 'photocrosslinkable']
Polymer Particle Formation Using Inkjet Printing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/040f3941-ac50-4924-9dc6-ffa69644d183/download
University of Texas at Austin
Exciting advances have been made in biomaterials research, through both relating material properties to cell response and discovery of new materials via high throughput screening. This area of research is still hindered though by the paucity of information on the physicochemical parameters governing the response of cel...
null
null
null
null
null
null
['Cruz, Fabio', 'Lanza, Silvia', 'Boudaoud, Hakim', 'Hoppe, Sandrine', 'Camargo, Mauricio']
2021-10-21T20:38:07Z
2021-10-21T20:38:07Z
2015
Mechanical Engineering
null
https://hdl.handle.net/2152/89441
eng
2015 International Solid Freeform Fabrication Symposium
Open
['polymer recycling', 'additive manufacturing', '3D printers', 'filament extruders', 'open source']
Polymer Recycling and Additive Manufacturing in an Open Source Context: Optimization of Processes and Methods
Conference paper
https://repositories.lib.utexas.edu//bitstreams/5aa71bbe-b1be-479b-abd1-66ef9fe48ccd/download
University of Texas at Austin
Polymer recycling is a way to reduce environmental impacts of accumulation of polymeric waste materials. However, low recycling rates are often observed in conventional centralized recycling plants mainly to the challenge of collection and transportation for high-volume low-weight-polymers in conventional centralized r...
null
null
null
null
null
null
['Johnson, David M.', 'Beck, Victor', 'Valente, Michael', 'Völkel, Armin', 'Chang, Norine', 'Jose, Arun', 'Lancaster, Cory', 'Biegelsen, Dave', 'Elrod, Scott']
2021-10-28T20:51:51Z
2021-10-28T20:51:51Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89697
eng
2016 International Solid Freeform Fabrication Symposium
Open
['polymer spray deposition', 'electrostatic patterning', 'aerosol-based deposition', 'additive manufacturing', 'PARC']
Polymer Spray Deposition: A Novel Aerosol-Based, Electrostatic Digital Deposition System for Additive Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/48c62ab7-2eb1-45dd-ba4a-9b82325b236f/download
University of Texas at Austin
In order to address some of the shortcomings from traditional additive manufacturing methods, PARC, a Xerox Company, is developing a new additive manufacturing method for polymers that uses electrostatic patterning in combination with a new method of creating aerosols to directly pattern a wide range of thermoplastics ...
null
null
null
null
null
null
Lee, Biing-Lin
2018-04-12T18:45:35Z
2018-04-12T18:45:35Z
1991
Mechanical Engineering
doi:10.15781/T2XP6VM3G
http://hdl.handle.net/2152/64284
eng
1991 International Solid Freeform Fabrication Symposium
Open
['SLS', 'BFGoodrich R&D Center', 'CAD systems', 'CAM systems', 'CAE systems']
Polymeric Powder Material Technology for Selective Laser Sintering: The Overall View
Conference paper
https://repositories.lib.utexas.edu//bitstreams/7e666990-692c-4e65-b7d6-9c570d562bcd/download
null
This paper de.als with polymeric POwder technology relating to the conversion of raw polymeric materialsintoSelective LaserSinteringi(SLS) mtlterials. Generally, all SLS·polymeric powders go through similarexperiencesinmaterial- SLS interaction, such· as powderfeeding andsintering. The·desirtlblematerial - SLS interact...
null
null
null
null
null
null
['Rauniyar, Santosh K.', 'Chou, Kevin']
2021-11-30T20:57:06Z
2021-11-30T20:57:06Z
2019
Mechanical Engineering
null
['https://hdl.handle.net/2152/90545', 'http://dx.doi.org/10.26153/tsw/17464']
eng
2019 International Solid Freeform Fabrication Symposium
Open
['laser powder bed fusion', 'Ti64 alloy', 'porosity', 'computed tomography', 'CT']
Porosity Analysis and Pore Tracking of Metal AM Tensile Specimen by Micro-CT
Conference paper
https://repositories.lib.utexas.edu//bitstreams/6442a179-04e5-426c-af38-9e55f3bdd15b/download
University of Texas at Austin
In this study, the porosity of Ti-6Al-4V (Ti64) tensile specimen fabricated by laser powder bed fusion (L-PBF) with varying three process conditions was investigated. The variation included the energy density in fabrication (3 levels), the build location (3 levels) and the build orientation (2 levels) for a constant sc...
null
null
null
null
null
null
['Nagahama, Takaya', 'Mizoguchi, Takashi', 'Yonehara, Makiko', 'Kyogoku, Hideki']
2021-11-18T01:06:31Z
2021-11-18T01:06:31Z
2019
Mechanical Engineering
null
['https://hdl.handle.net/2152/90384', 'http://dx.doi.org/10.26153/tsw/17305']
eng
2019 International Solid Freeform Fabrication Symposium
Open
['selective laser melting', 'process parameters', 'H13 tool steel', 'mechanical properties']
The Porosity and Mechanical Properties of H13 Tool Steel Processed by High-Speed Selective Laser Melting
Conference paper
https://repositories.lib.utexas.edu//bitstreams/b8e7165d-9b08-4579-9e01-ae118a38efdd/download
University of Texas at Austin
Additive Manufacturing (AM) technology has the advantages of complicated geometry fabrication and integration of multiple parts. Selective Laser Melting (SLM), which is one of the AM technologies, generally takes longer manufacturing time than other manufacturing methods. In this research, the process parameters, which...
null
null
null
null
null
null
['Khanzadeh, Mojtaba', 'Bian, Linkan', 'Shamsaei, Nima', 'Thompson, Scott M.']
2021-10-28T20:17:21Z
2021-10-28T20:17:21Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89688
eng
2016 International Solid Freeform Fabrication Symposium
Open
['laser based additive manufacturing', 'porosity', 'porosity detection', 'melt pool', 'melt pool morphology', 'clustering', 'laser engineered net shaping']
Porosity Detection of Laser Based Additive Manufacturing Using Melt Pool Morphology Clustering
Conference paper
https://repositories.lib.utexas.edu//bitstreams/a26db74a-d6a2-4e60-91ba-6a4c8e0c987a/download
University of Texas at Austin
The microstructural and mechanical properties of Laser Based Additive Manufacturing (LBAM) are still inconsistent and unreliable, which is a major barrier that prevents Additive Manufacturing (AM) from entering main stream production. The key challenge is the lack of understanding for the underlying process-properties ...
null
null
null
null
null
null
['Qi, Ting', 'Zhu, Haihong', 'Yin, Jie', 'Chen, Baijin', 'Hu, Zhiheng', 'Zeng, Xiaoyun']
2021-11-02T14:47:26Z
2021-11-02T14:47:26Z
2017
Mechanical Engineering
null
https://hdl.handle.net/2152/89815
eng
2017 International Solid Freeform Fabrication Symposium
Open
['porosity development', 'cracking behavior', '7xxx series', 'Al-Zn-Mg-Cu', 'selective laser melting']
Porosity Development and Cracking Behavior of Al-Zn-Mg-Cu Alloys Fabricated by Selective Laser Melting
Conference paper
https://repositories.lib.utexas.edu//bitstreams/77087821-3213-4c80-b723-8dce57f59ffe/download
University of Texas at Austin
Selective laser melting (SLM) of the 7xxx series Al alloy (Al-Zn-Mg-Cu) faces more challenge than other series aluminum alloy such as Al-Si system because of the high hot-cracking sensitivity. The porosity development and crack behavior of Al-Zn-Mg-Cu alloys fabricated at various scanning speeds in SLM process, as well...
null
null
null
null
null
null
['Susan, D.F.', 'Puskar, J.D.', 'Brooks, J.A.', 'Robino, C.V.']
2019-09-20T15:16:27Z
2019-09-20T15:16:27Z
2000
Mechanical Engineering
null
['https://hdl.handle.net/2152/75919', 'http://dx.doi.org/10.26153/tsw/3018']
eng
2000 International Solid Freeform Fabrication Symposium
Open
Porosity
Porosity in Stainless Steel LENS Powders and Deposits 50
Conference paper
https://repositories.lib.utexas.edu//bitstreams/bfb0e12f-fbc4-4372-8d00-1e2c3b6cf94b/download
null
Laser Engineered Net Shaping (LENS) utilizes a laser beam to melt fine powders to produce three-dimensional engineering structures line by line and layer by layer. When building these structures, defects including lack-of-fusion (LOF) at interlayer boundaries and intralayer porosity are sometimes observed. LOF defects ...
null
null
null
null
null
null
['Kleszczynski, S.', 'Ladewig, A.', 'Friedberger, K.', 'zur Jacobsmühlen, J.', 'Merhof, D.', 'Witt, G.']
2021-10-19T20:33:42Z
2021-10-19T20:33:42Z
2015
Mechanical Engineering
null
https://hdl.handle.net/2152/89333
eng
2015 International Solid Freeform Fabrication Symposium
Open
['Laser Beam Melting', 'part position', 'surface roughness']
Position Dependency of Surface Roughness in Parts from Laser Beam Melting Systems
Conference paper
https://repositories.lib.utexas.edu//bitstreams/9530c12b-cafb-4e85-ab74-bba6311060df/download
University of Texas at Austin
Laser Beam Melting is a promising Additive Manufacturing technology for the production of complex metal components. During batch production of multiple identical parts in a single build job, we observed parts with deviating surface roughness in certain areas, which all faced away from the laser. This suggests a depende...
null
null
null
null
null
null
['King, B.A.', 'Rennie, A.E.W.', 'Taylor, J.P.', 'Bennett, G.R.']
2021-11-04T13:38:49Z
2021-11-04T13:38:49Z
2017
Mechanical Engineering
null
https://hdl.handle.net/2152/89956
eng
2017 International Solid Freeform Fabrication Symposium
Open
['post processing treatment', 'post processing', 'nylon 12', 'laser sintering']
Post Processing Treatments on Laser Sintered Nylon 12
Conference paper
https://repositories.lib.utexas.edu//bitstreams/f3f2281a-9361-4b1e-945b-68194a5ea51e/download
University of Texas at Austin
The laser sintering of polymers is an established process producing components with well-documented material properties. Whilst these properties are inferior to those of injection moulded nylon 12, they are suitable for prototyping and several specialist production applications. Broadening the applicability of the proc...
null
null
null
null
null
null
['Rybalcenko, K.', 'Charlesworth, R.E.', 'Folgar, L.', 'Ioannides, G.', 'Crabtree, J.G.']
2021-12-01T21:24:39Z
2021-12-01T21:24:39Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90618', 'http://dx.doi.org/10.26153/tsw/17537']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['additive manufacturing', 'post-process', 'COVID-19 nasopharyngeal swabs', 'COVID-19']
Post-Processing of Additively Manufactured Covid-19 Nasopharyngeal Swabs at Scale
Conference paper
https://repositories.lib.utexas.edu//bitstreams/5c116572-7f55-419b-842c-b77d761fb4ae/download
University of Texas at Austin
A methodology to post-process oral/respiratory Additively Manufactured medical components methods is presented. The system involves PostPro3D® smoothing machine by AMT, picking/racking module, industrial robot, conveyors and is used to smooth the surfaces of Covid-19 Nasopharyngeal Swabs manufactured at-scale using pow...
null
null
null
null
null
null
['Zarringhalam, Hadi', 'Hopkinson, Neil']
2019-11-21T18:39:19Z
2019-11-21T18:39:19Z
2003
Mechanical Engineering
null
['https://hdl.handle.net/2152/78564', 'http://dx.doi.org/10.26153/tsw/5620']
eng
2003 International Solid Freeform Fabrication Symposium
Open
Polyamide
Post-Processing of DuraForm� Polyamide with Small-Scale Features
Conference paper
https://repositories.lib.utexas.edu//bitstreams/e3e191c3-b3f6-465f-b240-39e5c97d62c4/download
null
In recent years layer manufacturing processes have evolved from Rapid Prototyping (the production of pre-production prototypes) to Rapid Manufacture (the production of end use parts) where limitations of the processes do not affect end use. There is no doubt that applications for Rapid Manufacture will grow in coming y...
null
null
null
null
null
null
['Nelson, J.C.', 'Vail, N.K.']
2018-04-12T18:52:13Z
2018-04-12T18:52:13Z
1991
Mechanical Engineering
doi:10.15781/T2SX64S93
http://hdl.handle.net/2152/64285
eng
1991 International Solid Freeform Fabrication Symposium
Open
['Department of Chemical Engineering', 'post-processing', 'polycarbonate', 'densification']
Post-Processing of Selective Laser Sintered Polycarbonate Parts
Conference paper
https://repositories.lib.utexas.edu//bitstreams/3a3ee1b1-e849-4428-95bf-23c29e9036d6/download
null
St\ldies were conducted·to det~rmine the effect of press\lre onpost-prpeessingofpolycarbonate coupons. No significant differences betweencou.pons processed at atmospheric •cQndidons.. andcouponsprpeessedin.vacuum were •observed. However, anisotropic shrinkage .was observedin.thez-directionnormal to thesintering plane. ...
null
null
null
null
null
null
['Xian, Y.', 'Rosen, D.W.']
2021-11-04T19:46:49Z
2021-11-04T19:46:49Z
2017
Mechanical Engineering
null
['https://hdl.handle.net/2152/90014', 'http://dx.doi.org/10.26153/16935']
eng
2017 International Solid Freeform Fabrication Symposium
Open
['level set based topology optimization', 'part boundary', 'support materials', 'post-processing', '3D printing']
A Post-Processing Procedure for Level Set Based Topology Optimization
Conference paper
https://repositories.lib.utexas.edu//bitstreams/084febbc-8ff8-41e3-8b8a-c9f38838c30d/download
University of Texas at Austin
This paper addresses two issues: 1. Topology optimization yields designs that may require support structures if additively manufactured, which increase material and clean-up costs. 2. Topologically optimized designs consist of discretized geometry which makes subsequent engineering difficult, hence the increasing need ...
null
null
null
null
null
null
['Kruse, C.S.', 'Meile, D.H.', 'Salajeghe, R.', 'Spangenberg, J.']
2023-04-03T15:37:16Z
2023-04-03T15:37:16Z
2022
Mechanical Engineering
null
['https://hdl.handle.net/2152/117717', 'http://dx.doi.org/10.26153/tsw/44596']
eng
2022 International Solid Freeform Fabrication Symposium
Open
Additive manufacturing
Post-Processing Volumetric Additive Manufacturing (VAM) Components
Conference paper
https://repositories.lib.utexas.edu//bitstreams/b39d1f05-d96e-42f5-ac4c-72fafb26702d/download
null
Volumetric additive manufacturing, a new promising 3D-printing technology, has shown great potential to revolutionize the Additive Manufacturing industry. Within the field of Volumetric Additive Manufacturing, preliminary research has predominantly been focused on improving projection algorithms and optical systems ...
null
null
null
null
null
null
['Raman, R.V.', 'Rele, S.V.', 'Anderson, R.L.']
2018-05-03T19:36:07Z
2018-05-03T19:36:07Z
1993
Mechanical Engineering
doi:10.15781/T24X5507Z
http://hdl.handle.net/2152/65067
eng
1993 International Solid Freeform Fabrication Symposium
Open
['Ceracon Process', 'SFF', 'CAD', 'CAM']
Potential Application of Solid Free-Form Fabrication (SFF) Process in Ceracon P/M Forging
Conference paper
https://repositories.lib.utexas.edu//bitstreams/ed197074-363e-45d8-8b52-a0c5f4e8d2f6/download
null
The Ceracon Process is a patented[ll, low cost powder metallurgy process for achieving near-net-shape, full density parts. It. isasimple.·consolidation.technique which utilizes conventionalpowder metallurgyequipmenfand set-up. The Cetacon Process is a quasi-isostatic,hot consolidation technique, that utilizes a ceramic...
null
null
null
null
null
null
['Buswell, R. A.', 'Soar, R.', 'Gibb, A.', 'Thorpe, A.']
2020-02-24T15:41:54Z
2020-02-24T15:41:54Z
9/7/05
Mechanical Engineering
null
['https://hdl.handle.net/2152/80086', 'http://dx.doi.org/10.26153/tsw/7107']
eng
2005 International Solid Freeform Fabrication Symposium
Open
Freeform Construction
The Potential of Freeform Construction Processes
Conference paper
https://repositories.lib.utexas.edu//bitstreams/1bf0971e-f09d-46c1-9c27-3d511d19939f/download
null
The level of automation technology and processes control found in modern day construction lags significantly behind other industries such as automotive and aerospace. The construction industry has health and safety issues and still uses traditional methods of procurement. These problems are compounded by diminishing sk...
null
null
null
null
null
null
['Binder, M.', 'Anstaett, C.', 'Horn, M.', 'Herzer, F.', 'Schlick, G.', 'Seidel, C.', 'Schilp, J.', 'Reinhart, G.']
2021-11-09T15:58:45Z
2021-11-09T15:58:45Z
2018
Mechanical Engineering
null
['https://hdl.handle.net/2152/90104', 'http://dx.doi.org/10.26153/tsw/17025']
eng
2018 International Solid Freeform Fabrication Symposium
Open
['multi-material processing', 'laser-based powder bed fusion', 'LPBF', 'potentials', 'challenges']
Potentials and Challenges of Multi-Material Processing by Laser-Based Powder Bed Fusion
Conference paper
https://repositories.lib.utexas.edu//bitstreams/557451b0-7062-4aff-9ae2-972961fea417/download
University of Texas at Austin
Multi-material additive manufacturing offers a multitude of opportunities for increasing functional integration beyond the current state of the art. However, the real potential is only vaguely described and there are also challenges alongside the new opportunities. This paper presents a systematic collection of the cha...
null
null
null
null
null
null
['Jahnke, U.', 'Lindemann, C.', 'Moi, M.', 'Koch, R.']
2021-10-12T18:58:27Z
2021-10-12T18:58:27Z
8/16/13
Mechanical Engineering
null
['https://hdl.handle.net/2152/88720', 'http://dx.doi.org/10.26153/tsw/15654']
eng
2013 International Solid Freeform Fabrication Symposium
Open
['Additive Manufacturing', 'piracy', 'piracy prevention', 'plagiarism', 'product tagging']
Potentials of Additive Manufacturing to Prevent Product Piracy
Conference paper
https://repositories.lib.utexas.edu//bitstreams/ded408bc-d54b-4106-bb9c-45f1959f6dc3/download
University of Texas at Austin
Infringements of intellectual and industrial properties rights in terms of imitations of products are continuously increasing. Massive economic and reputational damages are consequences for concerned companies. One solution to this problem can be the use of Additive Manufacturing (AM) technologies. This production tech...
null
null
null
null
null
null
['Allison, Jared', 'Sharpe, Conner', 'Seepersad, Carolyn Conner', 'Kubiak, Steven']
2021-11-08T22:59:44Z
2021-11-08T22:59:44Z
2017
Mechanical Engineering
null
['https://hdl.handle.net/2152/90068', 'http://dx.doi.org/10.26153/tsw/16989']
eng
2017 International Solid Freeform Fabrication Symposium
Open
['metrology', 'powder bed fusion', 'design for additive manufacturing', 'DFAM', 'test parts', 'design guidance', 'selective laser sintering']
Powder Bed Fusion Metrology for Additive Manufacturing Design Guidance
Conference paper
https://repositories.lib.utexas.edu//bitstreams/506b24c1-e3de-495e-9517-3124ce0758cc/download
University of Texas at Austin
Design for additive manufacturing (DFAM) guidelines are important for helping designers avoid iterations and fully leverage the design freedoms afforded by additive manufacturing (AM). Guidelines can be generated via metrology studies that use test parts to characterize statistically the geometric capabilities of speci...
null
null
null
null
null
null
['Nauka, Krzysztof', 'Niu, Michelle', 'Discekici, Emre', 'Hartman, Aja', 'Olubummo, Paul']
2023-01-20T14:03:56Z
2023-01-20T14:03:56Z
2022
Mechanical Engineering
null
['https://hdl.handle.net/2152/117255', 'http://dx.doi.org/10.26153/tsw/44136']
eng
2022 International Solid Freeform Fabrication Symposium
Open
ultraviolet light
Powder Bed Fusion of Polymers with Ultraviolet Light Emitting Diode Energy Sources
Conference paper
https://repositories.lib.utexas.edu//bitstreams/ee58827e-bfca-4d4e-a0ba-aec10f8d75ea/download
null
Powder bed 3D printing of polymers often uses broadband near-infrared (NIR) emitters and selectively printed fusing agents with absorption spectrum matching the emission of selected IR energy source. However, due to few available NIR absorbers that can be formulated into printable agent, printed 3D parts often have ...
null
null
null
null
null
null
['Wang, Jiwen', 'Li, Xiaoxuan', 'Shaw, Leon L.', 'Marcus, Harris L.', 'Cameron, Thomas B.']
2019-10-18T16:55:53Z
2019-10-18T16:55:53Z
2001
Mechanical Engineering
null
['https://hdl.handle.net/2152/76260', 'http://dx.doi.org/10.26153/tsw/3349']
eng
2001 International Solid Freeform Fabrication Symposium
Open
Prototyping
Powder Delivery in Dental Restoration Rapid Prototyping Process
Conference paper
https://repositories.lib.utexas.edu//bitstreams/8116c3e1-fbb8-4ac4-8f90-3794c02202c0/download
null
Rapid prototyping of dental restoration has been investigated for its potential to save time and cost. In this paper, a powder delivery system was developed to deliver dental porcelain powder accurately into 2-D shapes for dental restoration. Aqueous suspension of the porcelain was prepared as the vehicle for the powde...
The authors gratefully acknowledge financial support provided by the National Science Foundation under Grant No: DMI-9908249
null
null
null
null
null
Kumar, Ashok V.
2019-02-19T19:53:51Z
2019-02-19T19:53:51Z
1998
Mechanical Engineering
null
['https://hdl.handle.net/2152/73439', 'http://dx.doi.org/10.26153/tsw/591']
eng
1998 International Solid Freeform Fabrication Symposium
Open
['SFF', 'functional structural components']
Powder Deposition and Sintering for a Two-Powder Approach to Solid Freeform Fabrication
Conference paper
https://repositories.lib.utexas.edu//bitstreams/d40894c3-5410-47d3-bb08-a4e6dec8b021/download
null
A two-powder approach is presented where Fused Deposition modeling (FDM) is used to create a thin shell in the shape of the part to be fabricated. The shell is filled with powder of the part material and surrounded by a support powder that has a high sintering temperature. Upon compressing and sintering the shelVpowder...
null
null
null
null
null
null
['Hossain, M.S.', 'Silva, D.F.', 'Vinel, A.', 'Liu, J.', 'Shamsaei, N.']
2021-12-01T22:42:45Z
2021-12-01T22:42:45Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90643', 'http://dx.doi.org/10.26153/tsw/17562']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['LB-PBF', 'correlation coefficient', 'variance inflation factor', 'LASSO', 'random forest regression', 'stepwise regression']
Powder Features Affecting Structural and Mechanical Properties of Additively Manufactured Inconel 718: A Machine Learning Analysis
Conference paper
https://repositories.lib.utexas.edu//bitstreams/1c433f1d-1ef7-4f2f-97cc-65b242030cba/download
University of Texas at Austin
The aim of this paper is to select important Inconel 718 powder properties that can have significant effect on the structural and mechanical properties of Laser-Beam Powder Bed Fusion manufactured specimens. The dataset used was provided by NASA and contains powder rheological, morphological, and chemical composition p...
null
null
null
null
null
null
['John Lee, Sang-Joon', 'Sachs, Emanuel', 'Cima, Michael']
2018-05-03T19:18:01Z
2018-05-03T19:18:01Z
1993
Mechanical Engineering
doi:10.15781/T2XD0RF6D
http://hdl.handle.net/2152/65061
eng
1993 International Solid Freeform Fabrication Symposium
Open
['Department of Mechanical Engineering', 'Department of Materials Science and Engineering', 'Three Dimensional Printing', 'rapid prototyping']
Powder Layer Position Accuracy in Powder-Based Rapid Prototyping
Conference paper
https://repositories.lib.utexas.edu//bitstreams/31d6cd38-ff8c-4bd1-ac67-85ad75d6a710/download
null
null
null
null
null
null
null
null
['Wegner, A.', 'Ünlü, T.']
2021-10-27T22:40:31Z
2021-10-27T22:40:31Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89636
eng
2016 International Solid Freeform Fabrication Symposium
Open
['laser sintering', 'aging effects', 'polypropylene', 'processing parameters']
Powder Life Cycle Analyses for a New Polypropylene Laser Sintering Material
Conference paper
https://repositories.lib.utexas.edu//bitstreams/1667ea16-c7ee-46b6-a61e-e7d2d2258d07/download
University of Texas at Austin
When processing polymers in laser sintering, material aging occurs. The consequences of these aging effects are changes of material and part properties. A reduction of surface quality and the occurrence of orange peel are often found when using a material of too high viscosity. These effects are well known when process...
null
null
null
null
null
null
['Hu, Q.J.', 'Fuh, J.Y.H.', 'Wong, Y.S.', 'Lu, L.', 'Choy, C.M.', 'Chen, Z.D.']
2019-10-22T18:31:45Z
2019-10-22T18:31:45Z
2002
Mechanical Engineering
null
['https://hdl.handle.net/2152/76339', 'http://dx.doi.org/10.26153/tsw/3428']
eng
2002 International Solid Freeform Fabrication Symposium
Open
Metallurgy
Powder Metallurgy of M2 High-Speed Steel for Rapid Tooling Applications
Conference paper
https://repositories.lib.utexas.edu//bitstreams/2d6ade62-53ef-40ab-aa5d-8c91d792fb69/download
null
A rapid tooling method has been developed to make a metallic tooling by powder metallurgy [1]. It is an integration of two techniques: rapid prototyping and powder metallurgy. The main advantages of this rapid tooling technique over the conventional techniques were short production cycle, low investment and manufacture...
null
null
null
null
null
null
['Majewski, C.E.', 'Horsford, P.M.', 'Hopkinson, N.']
2021-09-29T14:49:37Z
2021-09-29T14:49:37Z
9/18/09
Mechanical Engineering
null
['https://hdl.handle.net/2152/88187', 'http://dx.doi.org/10.26153/tsw/15128']
eng
2009 International Solid Freeform Fabrication Symposium
Open
['Elongation at Break', 'Laser Sintered parts', 'thermal pre-conditioning', 'powder pre-conditioning']
Powder Pre-Conditioning for the LS Process
Conference paper
https://repositories.lib.utexas.edu//bitstreams/18a490ae-f021-4c8f-9239-d5222583f19e/download
University of Texas at Austin
It has previously been shown that the use of recycled Nylon-12 powder leads to increased Elongation at Break (EaB) of Laser Sintered (LS) parts, possibly due to elevated powder temperature in the part bed causing increases in molecular weight. However, this increase in EaB often corresponds to a decrease in repeatabili...
null
null
null
null
null
null
['Chen, D.Z.', 'Lao, S.', 'Koo, J.H.', 'Londa, M.', 'Alabdullatif, Z.']
2021-09-30T15:51:40Z
2021-09-30T15:51:40Z
2010
Mechanical Engineering
null
['https://hdl.handle.net/2152/88269', 'http://dx.doi.org/10.26153/tsw/15210']
eng
2010 International Solid Freeform Fabrication Symposium
Open
['nano-graphene platelets', 'polyamide 11', 'polymer nanocomposites', 'Selective Laser Sintering', 'powder-powder mixing techniques', 'twin-screw extrusion']
Powder Processing and Properties Characterization of Polyamide 11- Graphene Nanocomposites for Selective Laser Sintering
Conference paper
https://repositories.lib.utexas.edu//bitstreams/6794958a-32a5-404c-b412-6e937ff3d98b/download
University of Texas at Austin
Nano-graphene platelets (NGPs) were added to polyamide 11 (PA11) powder in 1%, 3%, and 5% weight loading in an attempt to create electrostatic dissipative polymer nanocomposites (PNC) using SLS, a rapid manufacturing process. Powder-powder mixing techniques were explored as a potential replacement for twin-screw extrus...
null
null
null
null
null
null
['Soltani-Tehrani, Arash', 'Shamsaei, Nima', 'Surya, Adapa Venkata', 'Mallory, Jaikp', 'Ramakrishnan, Ramesh']
2021-12-06T22:27:15Z
2021-12-06T22:27:15Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90698', 'http://dx.doi.org/10.26153/tsw/17617']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['additive manufacturing', 'LB-PBF', 'L-PBF', 'tensile properties', 'Inconel 718', 'powder recycling', 'powder characterization']
Powder Reuse Effects on the Tensile Behavior of Additively Manufactured Inconel 718 Parts
Conference paper
https://repositories.lib.utexas.edu//bitstreams/3a028f4a-8e4a-4652-beb6-33c36af76d6f/download
University of Texas at Austin
Inconel 718 (IN718), with a wide range of applications in aerospace industries and good weldability, is a popular powder feedstock in the laser beam powder bed fusion (LB-PBF) additive manufacturing (AM) process. Due to fabrication, handling, and storage costs, powder feedstock is commonly reused several times. Therefo...
null
null
null
null
null
null
['Klippstein, Helge', 'Schmid, Hans-Joachim']
2023-01-27T14:20:53Z
2023-01-27T14:20:53Z
2022
Mechanical Engineering
null
['https://hdl.handle.net/2152/117338', 'http://dx.doi.org/10.26153/tsw/44219']
eng
2022 International Solid Freeform Fabrication Symposium
Open
laser sintering
Powder Spread Flaws in Polymer Laser Sintering and Its Influences on Mechanical Performance
Conference paper
https://repositories.lib.utexas.edu//bitstreams/df87860b-1766-46d4-acf1-5bf45bf402fc/download
null
By monitoring the recoating process within polymer laser sintering production, it was shown that multiple powder-spread-flaws can be detected. Those groove-like flaws are expected to be the result of agglomerates jamming between the recoater and the last powder layer. This work is analyzing the interaction between p...
null
null
null
null
null
null
['Klippstein, Helge', 'Heiny, Florian', 'Pashikanti, Nagaraju', 'Gessler, Monika', 'Schmid, Hans-Joachim']
2021-12-07T18:03:36Z
2021-12-07T18:03:36Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90740', 'http://dx.doi.org/10.26153/tsw/17659']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['powder bed monitoring', 'process monitoring', 'powder spread', 'part properties', 'polymer laser sintering']
Powder Spread Process Monitoring in Polymer Laser Sintering and Its Influences on Part Properties
Conference paper
https://repositories.lib.utexas.edu//bitstreams/0f380a29-3310-4df7-8b2a-1c42df4217c5/download
University of Texas at Austin
Confidence in additive manufacturing technologies is directly related to the predictability of part properties, which is influenced by several factors. To gain confidence, online process monitoring with dedicated and reliable feedback is desirable for every process. In this project, a powder bed monitoring system was d...
null
null
null
null
null
null
['Dobson, Sean', 'Vunnam, Swathi', 'Frankel, Dana', 'Sudbrack, Chantal', 'Starr, Thomas']
2021-11-18T00:11:21Z
2021-11-18T00:11:21Z
2019
Mechanical Engineering
null
['https://hdl.handle.net/2152/90365', 'http://dx.doi.org/10.26153/tsw/17286']
eng
2019 International Solid Freeform Fabrication Symposium
Open
['selective laser melting', 'additive manufacturing', '17-4 PH stainless steel', 'microstructure', 'mechanical testing']
Powder Variation and Mechanical Properties for SLM 17-4 PH Stainless Steel
Conference paper
https://repositories.lib.utexas.edu//bitstreams/531d061d-2bc7-4d22-bea8-94cc0b4ef2e5/download
University of Texas at Austin
Chemical composition and atomizing gas of powders may affect properties of 17-4 PH fabricated via selective laser melting (SLM) process. This study investigates 17-4 PH stainless steel powders with various atomizing gases and compositions within 17-4 PH specification range. Material characterization demonstrated differ...
null
null
null
null
null
null
['Glassshroeder, J.', 'Prager, E.', 'Zaeh, M.F.']
2021-10-13T21:36:39Z
2021-10-13T21:36:39Z
2014
Mechanical Engineering
null
['https://hdl.handle.net/2152/88788', 'http://dx.doi.org/10.26153/tsw/15722']
eng
2014 International Solid Freeform Fabrication Symposium
Open
['powder-bed based 3D-printing', '3D printing', 'polymethyl methacrylate', 'PMMA', 'function integrated parts', 'base material', 'additive manufacturing']
Powder-Bed Based 3D-Printing of Function Integrated Parts
Conference paper
https://repositories.lib.utexas.edu//bitstreams/f3de6502-2b43-47e1-88cc-db8a5724d7b9/download
University of Texas at Austin
null
null
null
null
null
null
null
['Sutton, Austin T.', 'Kriewall, Caitlin S.', 'Leu, Ming C.', 'Newkirk, Joseph W.']
2021-10-28T14:34:40Z
2021-10-28T14:34:40Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89651
eng
2016 International Solid Freeform Fabrication Symposium
Open
['powder bed additive manufacturing', 'powder characterization', 'characterization techniques', 'part properties']
Powders for Additive Manufacturing Process: Characterization Techniques and Effects on Part Properties
Conference paper
https://repositories.lib.utexas.edu//bitstreams/1acd25b1-823f-4e27-8bd2-2c2b804070b3/download
University of Texas at Austin
Powder-bed based Additive Manufacturing is a class of Additive Manufacturing (AM) processes that bond successive layers of powder by laser melting to facilitate the creation of parts with complex geometries. As AM technology transitions from the fabrication of prototypes to end-use parts, the understanding of the powde...
null
null
null
null
null
null
['Jacobson, D. M.', 'Bennett, G.']
2020-03-05T20:08:27Z
2020-03-05T20:08:27Z
2006
Mechanical Engineering
null
['https://hdl.handle.net/2152/80155', 'http://dx.doi.org/10.26153/tsw/7176']
eng
2006 International Solid Freeform Fabrication Symposium
Open
Direct Metal Laser Sintering
Practical Issues in the Application of Direct Metal Laser Sintering
Conference paper
https://repositories.lib.utexas.edu//bitstreams/118f6c81-e1d1-4ee4-ac64-033c7957ee7c/download
null
Direct Metal Laser Sintering (DMLS) was introduced to meet the objective of producing metal parts directly from CAD data. CRDM has accumulated six years of experience in applying this technique, mostly to prototyping parts for evaluation. For some applications, such as blow moulds, porosity generated in DMLS has proved...
null
null
null
null
null
null
['Klosterman, Don', 'Chartoff, Richard', 'Osborne, Nora', 'Graves, George', 'Lightman, Allan', 'Steidlel, Cheri']
2018-11-30T14:57:09Z
2018-11-30T14:57:09Z
1997
Mechanical Engineering
doi:10.15781/T2C53FM75
http://hdl.handle.net/2152/70590
eng
1997 International Solid Freeform Fabrication Symposium
Open
['Material Selection', 'Rapid Prototype']
Pre-LOM, LOM, and Post-LOM Processes for the Fabrication of SiC and SiC/SiC Components
Conference paper
https://repositories.lib.utexas.edu//bitstreams/34b81d00-7cc0-4d87-a883-04fc2f747693/download
null
null
null
null
null
null
null
null
['Roschli, Alex', 'Post, Brian K.', 'Chesser, Phillip C.', 'Sallas, Matt', 'Love, Lonnie J.', 'Gaul, Katherine T.']
2021-11-09T19:20:54Z
2021-11-09T19:20:54Z
2018
Mechanical Engineering
null
['https://hdl.handle.net/2152/90140', 'http://dx.doi.org/10.26153/tsw/17061']
eng
2018 International Solid Freeform Fabrication Symposium
Open
['precast concrete molds', 'big area additive manufacturing', 'conventional pattern making']
Precast Concrete Models Fabricated with Big Area Additive Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/825ed515-8424-4d4d-8d0f-fd59b97acc7d/download
University of Texas at Austin
The traditional process of making precast concrete molds requires significant manual labor. The molds are made using hardwood, cost tens of thousands of dollars, and take weeks to build. Once built, a mold will last 5-10 pulls before becoming too heavily degraded to continue use. With additive manufacturing, the same m...
null
null
null
null
null
null
['Jean, Daniel L.', 'Duty, Chad E.', 'Fuhrman, Brian T.', 'Lackey, W. Jack']
2019-09-20T18:13:15Z
2019-09-20T18:13:15Z
2000
Mechanical Engineering
null
['https://hdl.handle.net/2152/75922', 'http://dx.doi.org/10.26153/tsw/3021']
eng
2000 International Solid Freeform Fabrication Symposium
Open
Deposition
Precision Carbon Deposition Using Pyrolytic Laser Chemical Vapor Deposition (LCVD) 73
Conference paper
https://repositories.lib.utexas.edu//bitstreams/09ab4a89-e6a2-489f-af3b-06e5c65a4a9f/download
null
Laser Chemical Vapor Deposition (LCVD) can be used to rapid prototype many different metals and ceramics. The spatial resolution is potentially very fine, depending on the accuracy of stage or laser movement, and the size of the laser spot used for the localized heating. This paper describes a set of experiments perfor...
null
null
null
null
null
null
['Li, L.', 'McGuan, R.', 'Kavehpour, P.', 'Candler, R.N.']
2021-11-09T15:22:00Z
2021-11-09T15:22:00Z
2018
Mechanical Engineering
null
['https://hdl.handle.net/2152/90092', 'http://dx.doi.org/10.26153/tsw/17013']
eng
2018 International Solid Freeform Fabrication Symposium
Open
['metrology', 'additive manufacturing', 'high-speed optical scanning', 'in situ validation', 'scan while printing', 'geometric dimensioning and tolerating']
Precision Enhancement of 3D Printing via In Situ Metrology
Conference paper
https://repositories.lib.utexas.edu//bitstreams/9106a313-7ec3-4653-81ce-17e29fa75764/download
University of Texas at Austin
The field of additive manufacturing, especially 3D printing, has gained growing attention in the research and commercial sectors in recent years. Notwithstanding that the capabilities of 3D printing have moved on to enhanced resolution, higher deposition rate, and a wide variety of materials, the crucial challenge of v...
null
null
null
null
null
null
['Wang, F.', 'Shor, L.', 'Darling, A.', 'Khalil, S.', 'Sun, W.', 'Güçeri, S.', 'Lau, A.']
2019-11-21T18:35:35Z
2019-11-21T18:35:35Z
2003
Mechanical Engineering
null
['https://hdl.handle.net/2152/78562', 'http://dx.doi.org/10.26153/tsw/5618']
eng
2003 International Solid Freeform Fabrication Symposium
Open
Poly-e-Caprolactone
Precision Extruding Deposition and Characterization of Cellular Poly-e-Caprolactone Tissue Scaffolds
Conference paper
https://repositories.lib.utexas.edu//bitstreams/01596c97-57bc-4ff4-b2e3-662bf721f5dd/download
null
Successes in scaffold guided tissue engineering require scaffolds to have specific macroscopic geometries and internal architectures in order to provide the needed biological and biophysical functions. Freeform fabrication provides an effective process tool to manufacture many advanced scaffolds with designed propertie...
The authors acknowledge the NSF-0219176 project funding support to graduate students Andrew Darling and Saif Khalil, and the ONR research funding support to graduate student Lauren Shor.
null
null
null
null
null
['Shor, L.', 'Güçeri, S.', 'Sun, W.']
2020-02-27T20:11:25Z
2020-02-27T20:11:25Z
2006
Mechanical Engineering
null
['https://hdl.handle.net/2152/80099', 'http://dx.doi.org/10.26153/tsw/7120']
eng
2006 International Solid Freeform Fabrication Symposium
Open
Precision Extrusion Deposition
Precision Extrusion Deposition of Polycaprolactone/Hydroxyapatite Tissue Scaffolds
Conference paper
https://repositories.lib.utexas.edu//bitstreams/9f9ddb22-d16a-4d7f-b2c9-884c884714a8/download
null
Freeform fabrication provides an effective process tool to manufacture advanced tissue scaffolds with specific designed properties. Our research focuses on using a novel Precision Extrusion Deposition (PED) process technique to directly fabricate Polycaprolactone (PCL) and composite PCL/ Hydroxyapatite (HA) tissue scaf...
null
null
null
null
null
null
['Jean, Daniel L.', 'Duty, Chad E.', 'Fuhrman, Brian T.', 'Lackey, W. Jack']
2019-03-08T17:47:07Z
2019-03-08T17:47:07Z
1999
Mechanical Engineering
null
['https://hdl.handle.net/2152/73572', 'http://dx.doi.org/10.26153/tsw/714']
eng
1999 International Solid Freeform Fabrication Symposium
Open
['LCVD', 'materials']
Precision LCVD System Design with Real Time Process Control
Conference paper
https://repositories.lib.utexas.edu//bitstreams/9cab3350-dfe2-4c15-9e3c-202f0e25d526/download
null
A Laser Chemical Vapor Deposition (LCVD) system was designed using a fixed 100 Watt C02 laser focused on a moveable substrate. Temperature and height measurement devices monitor the reaction at the point of deposition to provide feedback for controlling the process. The LCVD system will use rapid prototyping technology...
null
null
null
null
null
null
['Chadha, Charul', 'Patternson, Albert E.', 'Jasiuk, Iwona']
2021-12-01T23:32:39Z
2021-12-01T23:32:39Z
2021
Mechanical Engineering
null
['https://hdl.handle.net/2152/90657', 'http://dx.doi.org/10.26153/tsw/17576']
eng
2021 International Solid Freeform Fabrication Symposium
Open
['part repair', 'adhesive strength', 'thermoplastics', 'polymer healing theory', 'fused filament fabrication']
Predict Adhesive Strength of Repair of Thermoplastic Component Based on Polymer Healing Theory
Conference paper
https://repositories.lib.utexas.edu//bitstreams/d7a47ff9-4220-492f-80e5-1f2e646dd671/download
University of Texas at Austin
Advancements in polymer technology have increased the production of high-valued parts using polymers. These parts are often produced in low volumes and have complex geometries, making them difficult to reproduce later, especially when original tooling is no longer available. Reproduction of these parts from scratch usi...
null
null
null
null
null
null
['Crockett, R.S.', "O'Kelly, J.", 'Calvert, P.D.', 'Fabes, B.D.', 'Stuffle, K.', 'Creegan, P.', 'Hoffman, R.']
2018-10-03T19:32:24Z
2018-10-03T19:32:24Z
1995
Mechanical Engineering
doi:10.15781/T2833NH66
http://hdl.handle.net/2152/68683
eng
1995 International Solid Freeform Fabrication Symposium
Open
['polymerization', 'advanced ceramics research', 'CAD']
Predicting and Controlling Resolution and Surface Finish of Ceramic Objects Produced by Stereodeposition Processes
Conference paper
https://repositories.lib.utexas.edu//bitstreams/a1955181-4195-4051-af4c-99660961190d/download
null
Stereodeposition techniques are well suited for the Solid Freeform Fabrication of dense ceramic components. As opposed to forming a pattern in a particle bed or polymer bath, stereodeposition processes deposit material directly onto the previously created layer. The key to stereodeposition is a material's ability to be...
null
null
null
null
null
null
['Merschroth, Holger', 'Kniepkamp, Michael', 'Weigold, Matthias']
2021-11-16T16:07:30Z
2021-11-16T16:07:30Z
2019
Mechanical Engineering
null
['https://hdl.handle.net/2152/90327', 'http://dx.doi.org/10.26153/tsw/17248']
eng
2019 International Solid Freeform Fabrication Symposium
Open
['neural networks', 'thermal history', 'temperature prediction', 'temperature control', 'laser power', 'laser-based powder bed fusion']
Predicting and Controlling the Thermal Part History in Powder Bed Fusion Using Neural Networks
Conference paper
https://repositories.lib.utexas.edu//bitstreams/596e094e-1370-4878-9f83-35d4f0279666/download
University of Texas at Austin
Laser-based powder bed fusion of metallic parts is used widely in different branches of industry. Although there have been many investigations to improve the process stability, thermal history is rarely taken into account. The thermal history describes the parts’ thermal situation throughout the build process as a resu...
null
null
null
null
null
null
['Kishore, Vidya', 'Ajinjeru, Christine', 'Liu, Peng', 'Lindahl, John', 'Hassen, Ahmed', 'Kunc, Vlastimil', 'Duty, Chad']
2021-11-04T14:50:06Z
2021-11-04T14:50:06Z
2017
Mechanical Engineering
null
https://hdl.handle.net/2152/89975
eng
2017 International Solid Freeform Fabrication Symposium
Open
['sharkskin instability', 'sharksin', 'reinforced thermoplastics', 'extrusion additive manufacturing', 'big area additive manufacturing']
Predicting Sharkskin Instability in Extrusion Additive Manufacturing of Reinforced Thermoplastics
Conference paper
https://repositories.lib.utexas.edu//bitstreams/f5b89d5e-eb9d-4c26-9ced-a10d8e7f2270/download
University of Texas at Austin
The development of large scale extrusion additive manufacturing systems such as the Big Area Additive Manufacturing (BAAM) system has enabled faster printing with throughput as high as 50 kg/h and the use of a variety of thermoplastics and composites with filler loading as high as 50%. The combination of high throughpu...
null
null
null
null
null
null
['Bartolai, Joseph', 'Simpson, Timothy W.', 'Xie, Renxuan']
2021-10-28T14:18:23Z
2021-10-28T14:18:23Z
2016
Mechanical Engineering
null
https://hdl.handle.net/2152/89646
eng
2016 International Solid Freeform Fabrication Symposium
Open
['thermoplastic polymer', 'temperature history', 'rheological data', 'welding theory', 'mechanical strength', 'fused filament fabrication']
Predicting Strength of Thermoplastic Polymer Parts Produced Using Additive Manufacturing
Conference paper
https://repositories.lib.utexas.edu//bitstreams/fb496cc7-8b56-45b4-90e9-2b8646a9c46c/download
University of Texas at Austin
The weakest point in polymer parts produced by Fused Filament Fabrication (FFF) is the interface between adjacent layers and deposition toolpaths, or “roads”. We introduce a novel approach that uses the temperature history of these interfaces, polymer rheological data, and polymer welding theory to predict the mechanic...
null
null
null
null
null
null
['Peng, B.', 'Panesar, A.']
2024-03-26T20:12:23Z
2024-03-26T20:12:23Z
2023
Mechanical Engineering
null
['https://hdl.handle.net/2152/124389', 'https://doi.org/10.26153/tsw/50997']
en_US
2023 International Solid Freeform Fabrication Symposium
Open
['PINN', 'metal additive manufacturing', 'temperature field']
Predicting Temperature Field for Metal Additive Manufacturing using PINN
Conference paper
https://repositories.lib.utexas.edu//bitstreams/bcd4f7b0-f922-4b28-ae01-954e237bfe79/download
University of Texas at Austin
Machine-learning-based methods are gaining traction as an alternative to numerical methods in many engineering applications. Physics-informed neural network (PINN), a self-supervised method, is particularly attractive with its unique capability of guiding the training with physical laws written in the forms of partial ...
null
null
null
null
null
null
['Yadollahi, Aref', 'Mahtabi, Mohammad J.', 'Doude, Haley R.', 'Newman, James C. Jr']
2021-11-02T13:35:51Z
2021-11-02T13:35:51Z
2017
Mechanical Engineering
null
https://hdl.handle.net/2152/89798
eng
2017 International Solid Freeform Fabrication Symposium
Open
['additive manufacturing', 'AM', 'laser powder bed fusion', 'L-PBF', 'fatigue-life prediction', 'crack growth', 'FASTRAN']
Prediction of Fatigue Lives in Additively Manufactured Alloys Based on the Crack-Growth Concept
Conference paper
https://repositories.lib.utexas.edu//bitstreams/ea52d9ee-d75b-43fd-a36a-709b137a60d1/download
University of Texas at Austin
This paper aims to predict the fatigue behavior of additively manufactured alloys using crack-growth data. Among different sources of damage under cyclic loadings, fatigue due to cracks originated from voids is the most life-limiting failure mechanism in powder-based metal additive manufacturing (AM) parts. Hence, the ...
null
null
null
null
null
null
['Pal, Deepankar', 'Patil, Nachiket', 'Stucker, Brent E.']
2021-10-06T20:24:12Z
2021-10-06T20:24:12Z
8/22/12
Mechanical Engineering
null
['https://hdl.handle.net/2152/88433', 'http://dx.doi.org/10.26153/tsw/15370']
eng
2012 International Solid Freeform Fabrication Symposium
Open
['Electron Beam Melting', 'Ti6Al4V', 'dislocation density based crystal plasticity framework', 'DDCP-FEM']
Prediction of Mechanical Properties of Electron Beam Melted Ti6Al4V Parts Using Dislocation Density Based Crystal Plasticity Framework
Conference paper
https://repositories.lib.utexas.edu//bitstreams/6440965b-6508-4cc3-8af3-2b0ca0f6a7d8/download
University of Texas at Austin
Parts produced using Electron Beam Melting (EBM) with Ti6Al4V powders are generally tested for two important mechanical properties, namely tensile strength and fatigue life. The optimization of the process input parameters, such as part orientation, initial powder size and hatch pattern, for the abovementioned mechanic...
null
null
null
null
null
null
['Nasirov, A.', 'Hasanov, S.', 'Fidan, I.']
2021-11-18T17:49:40Z
2021-11-18T17:49:40Z
2019
Mechanical Engineering
null
['https://hdl.handle.net/2152/90446', 'http://dx.doi.org/10.26153/tsw/17367']
eng
2019 International Solid Freeform Fabrication Symposium
Open
['classical laminate theory', 'multiscale modeling', 'mechanical properties', 'fused deposition modeling']
Prediction of Mechanical Properties of Fused Deposition Modeling Made Parts using Multiscale Modeling and Classical Laminate Theory
Conference paper
https://repositories.lib.utexas.edu//bitstreams/6e52a5ab-6bc4-4bad-bf59-7e129d349bef/download
University of Texas at Austin
Fused deposition modeling (FDM) is one of the most popular additive manufacturing (AM) processes that works based on the layer-by-layer buildup of a 3D modeled part from polymers or fiber-reinforced polymer materials. In recent years, extensive research has been done to characterize the mechanical properties of FDM pro...
null
null
null
null
null
null
['Klingbeil, N.W.', 'Brown, C.J.', 'Bontha, S.', 'Kobryn, P.A.', 'Fraser, H.L.']
2019-10-22T18:24:58Z
2019-10-22T18:24:58Z
2002
Mechanical Engineering
null
['https://hdl.handle.net/2152/76336', 'http://dx.doi.org/10.26153/tsw/3425']
eng
2002 International Solid Freeform Fabrication Symposium
Open
Deposition
Prediction of Microstructure in Laser Deposition of Titanium Alloys
Conference paper
https://repositories.lib.utexas.edu//bitstreams/618984dc-95a3-4339-8014-3e68ffd6331a/download
null
Laser deposition of titanium alloys is under consideration for aerospace applications, and offers significant increases in efficiency and flexibility compared to conventional manufacturing methods. However, its ultimate success will depend on the ability to predict and control the microstructure and resulting mechanica...
This work was supported by the Joint AFRL/DAGSI Research Program, project number ML-WSU-01-11, as well as by a grant from Wright State University and the Ohio Board of Regents.
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null
null
null
null
['Tapia, G.', 'Elwany, A.H.']
2021-10-21T18:00:04Z
2021-10-21T18:00:04Z
2015
Mechanical Engineering
null
https://hdl.handle.net/2152/89412
eng
2015 International Solid Freeform Fabrication Symposium
Open
['predictive models', 'porosity', 'Selective Laser Melting', 'Multivariate Adaptive Regression Splines']
Prediction of Porosity in SLM Parts Using a MARS Statistical Model and Bayesian Inference
Conference paper
https://repositories.lib.utexas.edu//bitstreams/dfe7c9fb-77e4-48e6-9669-b5d8653f97ca/download
University of Texas at Austin
Predictive models that establish a linkage between process parameters and part properties have been identified as a high priority research need in Additive Manufacturing. We work with a Multivariate Adaptive Regression Splines (MARS) statistical model to predict the porosity of parts produced using Selective Laser Melt...
null
null
null
null
null
null
['Karamooz-Ravari, M.R.', 'Taheri Andani, M.']
2021-11-04T18:59:21Z
2021-11-04T18:59:21Z
2017
Mechanical Engineering
null
['https://hdl.handle.net/2152/90005', 'http://dx.doi.org/10.26153/16926']
eng
2017 International Solid Freeform Fabrication Symposium
Open
['finite element method', 'TPMS', 'elastic response', 'cellular lattice structures', 'P-type', 'G-Type']
Prediction of the Elastic Response of TPMS Cellular Lattice Structures Using Finite Element Method
Conference paper
https://repositories.lib.utexas.edu//bitstreams/190a5e4d-379f-4f19-a4eb-d0c8ad9bc463/download
University of Texas at Austin
Cellular lattice structures are a group of porous materials in which the cells are regularly distributed. Since the morphology of the cells is complicated, the fabrication of them is challenging using conventional methods. However, with the advent of additive manufacturing technology, more attention is focused on these...
null
null
null
null
null
null
['Badrinarayan, B.', 'Barlow, J.W.']
2018-04-10T18:19:59Z
2018-04-10T18:19:59Z
1990
Mechanical Engineering
doi:10.15781/T2FT8F24M
http://hdl.handle.net/2152/64244
eng
1990 International Solid Freeform Fabrication Symposium
Open
['Department of Chemical Engineering', 'Selective Layer Sintering', 'SLS']
Prediction of the Thermal Conductivity of Beds Which Contain Polymer Coated Metal Particles
Conference paper
https://repositories.lib.utexas.edu//bitstreams/f5a9391f-bd56-49a5-94c2-0a009af7a97e/download
null
Structural parts of ceramics or metals can, in principle, be made by laser sintering polymer coated ceramic or metal powders, followed by conventional methods for removing the binder and sintering in ovens. Understanding the laser sintering of coated materials requires knowledge of the behavior of beds containing compo...
null
null
null
null
null
null
['Sih, Samuel Sumin', 'Barlow, Joel W.']
2018-11-08T15:23:40Z
2018-11-08T15:23:40Z
1995
Mechanical Engineering
doi:10.15781/T2ZW19C17
http://hdl.handle.net/2152/69887
eng
1995 International Solid Freeform Fabrication Symposium
Open
['SFF', 'heat transfer', 'Powder beds']
The Prediction of the Thermal Conductivity of Powders
Conference paper
https://repositories.lib.utexas.edu//bitstreams/1f6eb687-8fdf-47df-abf4-3daa466f9e20/download
null
A revised view factor for the prediction of the thermal conductivity of powder beds at high temperatures that includes a radiation contribution to the conductivity is presented. Comparison of predictions by this equation with 424 measured values shows the predictions to be accurate to within a ±30% relative error.
null
null
null
null
null
null
['Nettekoven, A.', 'Fish, S.', 'Topcu, U.', 'Beaman, J.']
2021-11-16T15:02:24Z
2021-11-16T15:02:24Z
2018
Mechanical Engineering
null
['https://hdl.handle.net/2152/90305', 'http://dx.doi.org/10.26153/tsw/17226']
eng
2018 International Solid Freeform Fabrication Symposium
Open
['additive manufacturing', 'iterative learning control', 'machine learning', 'intelligent control', 'artificial intelligence']
Predictive Iterative Learning Control with Data-Driven Model for Optimal Laser Power in Selective Laser Sintering
Conference paper
https://repositories.lib.utexas.edu//bitstreams/01599a8e-73d1-4970-9e86-79bc71858b32/download
University of Texas at Austin
Building high quality parts is still a key challenge for Selective Laser Sintering machines today due to a lack of sufficient process control. In order to improve process control, we propose a Predictive Iterative Learning Control (PILC) controller that minimizes the deviation of the postsintering temperature profile o...
null
null
null
null
null
null
null
2019-09-25T15:54:41Z
2019-09-25T15:54:41Z
2001
Mechanical Engineering
null
['https://hdl.handle.net/2152/75998', 'http://dx.doi.org/10.26153/tsw/3097']
eng
2001 International Solid Freeform Fabrication Symposium
Open
Preface
Preface
Conference paper
https://repositories.lib.utexas.edu//bitstreams/6e056690-14ae-4493-a7f0-3004de57a050/download
null
null
null
null
null
null
null
null
Laboratory for Freeform Fabrication and University of Texas at Austin
2023-01-19T17:33:19Z
2023-01-19T17:33:19Z
2022
Mechanical Engineering
null
['https://hdl.handle.net/2152/117248', 'http://dx.doi.org/10.26153/tsw/44129']
eng
2022 International Solid Freeform Fabrication Symposium
Open
preface
Preface
Conference paper
https://repositories.lib.utexas.edu//bitstreams/1deb22c5-82b1-4b83-87c9-f4cd2a021472/download
null
null
null
null
null
null
null
null