---
license: mit
tags:
- astm
- mechanical-testing
- tensile
- flex
- sls
- 3d-printing
- additive-manufacturing
- inova-mk1
configs:
- config_name: D638
  data_files:
  - split: train
    path: data/D638/*.jsonl
  default: true
- config_name: D790
  data_files:
  - split: train
    path: data/D790/*.jsonl
---

# Inova-Mk1-ASTM

ASTM mechanical-test specimens (D638 tensile, D790 flex) printed on the Inova Mk1 SLS printer and pulled on an MTS / TestWorks Instron. Each row is a single specimen with full geometry, scalar results, stress–strain + raw DAQ curves, and — for SLS rows — FK references and an embedded snapshot of the upstream print profile from [`ppak10/Inova-Mk1-Database`](https://huggingface.co/datasets/ppak10/Inova-Mk1-Database).

Rows are self-contained for ML use: the full `PrintProfile` JSON is inlined, so features (material/energy profile) and target (mechanical response) live on the same row.

```python
from datasets import load_dataset
tensile = load_dataset("ppak10/Inova-Mk1-ASTM", "D638", split="train")
flex    = load_dataset("ppak10/Inova-Mk1-ASTM", "D790", split="train")
```

## Composite stress–strain

Every specimen overlaid on one plot per standard. Colors are batch labels (A/B/C/D/E); dashed and dotted gray lines in D638 are PLA/PETG filament controls — they print at much higher stress and strain than the SLS PA12 specimens, which is why the SLS curves cluster near the origin.

| D638 (tensile) | D790 (three-point flex) |
|---|---|
| ![D638 composite](assets/D638_composite.png) | ![D790 composite](assets/D790_composite.png) |

Regenerate with `uv run scripts/plots/01_composite.py`.

---

## Configs

| Config | Description | Files |
|---|---|---|
| `D638` (default) | Tensile specimens (ASTM D638 Type I). 22 SLS + 3 PLA + 3 PETG = 28 rows. | `data/D638/*.jsonl` (one row per file) |
| `D790` | Three-point flex specimens (ASTM D790 Procedure A). 27 SLS rows (10 of them — Batch E — from a print job not yet in Database, so they carry null FKs). | `data/D790/*.jsonl` (one row per file) |

One JSONL file per specimen — SLS rows are named after their `sample_id` (e.g. `data/D638/A1.jsonl`, `data/D790/E10.jsonl`); PLA/PETG controls use `{material}_TSR{n}.jsonl` (e.g. `data/D638/PLA_TSR6.jsonl`). Both configs share the same row schema and are produced by the per-session scripts under `scripts/specimens/`.

Specimens are labeled with a `sample_id` of the form `{batch_letter}{seq}` (e.g. `A1`, `C7`), where the batch letter identifies the print batch they came from. The same `sample_id` may appear in both configs — `C1` in `D638` and `C1` in `D790` are **different physical specimens** that came from the same Batch C print.

## Source Layout

```
source/
  2026_05_26/          # one folder per test session
    *.tsproj           # TestWorks project pointer
    *.xlsx             # TestWorks Excel export, one sheet per specimen
    TST1.Test/
      TestRuns/
        TSR{n}.TestRun/
          Data/DaqTaskActivity1.h5            # raw DAQ scans (10 Hz)
          AnalysisRuns/ANR1.AnalysisRun/
            persistent.h5                     # analyzed scalars + curves
```

Test sessions covered:

| Session folder | Specimens | Standard | Batch | Source print job (Database) |
|---|---:|---|---|---|
| `2026_05_26/` | 5 | D638 | A | 2026-05-25 (d638_type1) |
| `2026_06_01/` | 5 | D638 | B | 2026-05-30 (d638_type1_engraved) |
| `2026_06_03/` | 7 | D638 | C | 2026-06-02 (d638_type1_engraved) |
| `2026_06_10/Tensile Testing/` | 5 SLS + 3 PLA + 3 PETG | D638 | D (SLS only) | SLS: 2026-06-07 (d638_type1_engraved) |
| `2026_06_10/Batch C 3pt test/` | 9 | D790 | C | 2026-06-02 (d790_flex_specimen) |
| `2026_06_10/Batch D 3pt test/` | 8 | D790 | D | 2026-06-07 (d790_flex_specimen) |
| `2026_06_10/Batch E 3pt test/` | 10 | D790 | E | print job **not yet in Database** — FKs null until backfilled |

TSR11 in `Batch E 3pt test/` exists on disk but has empty `Data/` (aborted run, no DAQ scans) and no corresponding xlsx sheet — it is excluded from the JSONL.

## Row shape

```json
{
  "sample_id": "A1",
  "batch_label": "A",
  "specimen_id": "2026_05_26/TSR1",
  "test_date": "2026-05-26",
  "session_folder": "2026_05_26",
  "test_run_name": "TSR1",
  "specimen_index": 1,

  "material_class": "SLS",
  "astm": { "standard": "D638", "type": "Type I", "year": "2022" },
  "test_end_reason": "Break Detected",

  "geometry": {
    "width_mm": 12.9, "thickness_mm": 3.2,
    "area_mm2": 41.28, "gauge_length_mm": 103.0
  },

  "job_id":           "ba17a5ba-a5f6-4d60-8832-b6c13a2dfa67",
  "print_date":       "2026-05-25",
  "print_profile_id": "52715389-d580-4be9-9194-ed300bdf911b",
  "object_hash":      "E4251951376A82B4303394F832996A2E9883EAB0",
  "session_id":       null,

  "print_profile_snapshot": { "...full PrintProfile JSON..." },

  "metrics": {
    "modulus_pa": 341090566.27,
    "peak_load_n": null, "peak_stress_pa": null,
    "strain_at_break": null, "stress_at_break_pa": null,
    "energy_to_break_j": null, "yield_stress_pa": null,
    "slope_n_per_m": 136701.15
  },

  "curves": {
    "time_s":      [/* N */],
    "extension_m": [/* N */],
    "load_n":      [/* N */],
    "strain":      [/* N */],
    "stress_pa":   [/* N */]
  },

  "source_paths": {
    "persistent_h5": "source/2026_05_26/TST1.Test/TestRuns/TSR1.TestRun/AnalysisRuns/ANR1.AnalysisRun/persistent.h5",
    "daq_h5":        "source/2026_05_26/TST1.Test/TestRuns/TSR1.TestRun/Data/DaqTaskActivity1.h5",
    "xlsx":          "source/2026_05_26/tensile_testing_5.26.xlsx",
    "xlsx_sheet":    "Sheet1"
  }
}
```

## Notes on results

- `sample_id` is null for PLA/PETG control rows (they didn't come from an SLS print batch). Filter on `material_class == "SLS"` to get the rows that link back to Database.
- `batch_label == "E"` rows currently have `job_id`, `print_profile_id`, `object_hash`, and `print_profile_snapshot` all null — the source print job for Batch E is not yet in Database. The mechanical results are still valid.
- `metrics.peak_*` and `metrics.*_at_break` are often `null` in the D638 tensile rows because TestWorks did not detect a peak/break point on those runs. D790 flex rows have these fields more consistently populated. The `curves.stress_pa` / `curves.strain` arrays are populated regardless, so consumers can re-derive peak/break with their own criteria.
- `metrics.modulus_pa` matches the kN/mm² value in the TestWorks xlsx after unit conversion (e.g. tensile 0.341 kN/mm² → 3.41 × 10⁸ Pa). For D790, TestWorks computes the flexural modulus via the 3-point-bend formula directly; values may look unintuitive compared to the tensile modulus.
- DAQ scans are in SI units (m, N, s); stress is Pa and strain is dimensionless.
- For D790, `geometry.gauge_length_mm` is always null (gauge length is a tensile concept; flex uses support span which is not surfaced).