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.

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.

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–I); dashed and dotted gray lines in D638 are PLA/PETG filament controls, and solid gray lines are FormLabs PA12GF benchtop 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)

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

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Configs

Config	Description	Files
D638 (default)	Tensile specimens (ASTM D638 Type I). 45 SLS (batches A–I) + 3 PLA + 3 PETG + 5 FormLabs PA12GF = 56 rows. Batches F–I (18 rows) have null FKs — their print jobs aren't in Database yet.	data/D638/*.jsonl (one row per file)
D790	Three-point flex specimens (ASTM D790 Procedure A). 50 SLS rows (batches C–I) + 5 FormLabs PA12GF = 55 rows. Batches E–I (33 rows) have null FKs — their print jobs aren't in Database yet.	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); non-SLS controls use {material}_TSR{n}.jsonl (e.g. data/D638/PLA_TSR6.jsonl, data/D790/PA12GF_FL_TSR1.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_08/	5	D638	D	2026-06-07 (d638_type1_engraved)
2026_06_10/Tensile Testing/	5 SLS + 3 PLA + 3 PETG	D638	E (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
2026_06_16/Tensile FormLabs Samples/	5 (PA12GF_FL)	D638	— (control, printed vertically)	n/a — benchtop comparison filament
2026_06_16/Bending FormLabs Samples/	5 (PA12GF_FL)	D790	— (control)	n/a — benchtop comparison filament
2026_06_25/Tensile Data/	5	D638	F	print job not yet in Database — FKs null until backfilled
2026_06_25/Flexural Data/	9	D790	F	print job not yet in Database — FKs null until backfilled
2026_06_26/Tensile/	5	D638	G	print job not yet in Database — FKs null until backfilled
2026_06_26/Flexural/	4	D790	G	print job not yet in Database — FKs null until backfilled
2026_06_30/Tensile/ (TST1.Test)	3	D638	H	print job not yet in Database — FKs null until backfilled
2026_06_30/Tensile/ (TST2.Test)	5	D638	I	print job not yet in Database — FKs null until backfilled
2026_06_30/Flex 6-30/ (TST1.Test)	5	D790	I	print job not yet in Database — FKs null until backfilled
2026_06_30/Flex 6-30/ (xlsx only, no TestRuns folder)	5	D790	H	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. TSR4 in Batch I flex (Flex 6-30/) is excluded for a similar reason: test_end_reason is "Test Stopped" rather than a detected break.

Batch H's 5 flex specimens (2026_06_30/Flex 6-30/) don't have a raw TestRuns folder — it looks like it was overwritten when the Batch I TestWorks project reused the same default TST1.Test name in the same directory. flex_h_6.30.xlsx is the only surviving record, so those 5 rows are built from that xlsx export alone: the raw load/extension curve (curves.load_n/curves.extension_m) comes from its embedded columns, but curves.strain/curves.stress_pa are empty and several metrics fields (modulus_pa, strain_at_peak, strain_at_yield, etc.) are null, since deriving them requires the support span, which this export doesn't surface. See each row's notes field.

Row shape

{
  "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_peak": null,
    "load_at_break_n": null, "stress_at_break_pa": null, "strain_at_break": null,
    "energy_to_break_j": null,
    "yield_stress_pa": null, "strain_at_yield": null
  },

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

  "notes": "",

  "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 and batch_label are null for non-SLS control rows (PLA, PETG, FormLabs PA12GF — they didn't come from an SLS print batch). Filter on material_class == "SLS" to get the rows that link back to Database.
• Batches E–I currently have job_id, print_profile_id, object_hash, and print_profile_snapshot all null — their source print jobs aren't in Database yet. 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.
• Batch H's flex rows (data/D790/H1.jsonl–H5.jsonl) are the one exception: their raw TestRuns folder is missing (see Test sessions covered above), so they're built from the TestWorks xlsx export alone. curves.strain/curves.stress_pa are empty and most metrics fields are null for these 5 rows specifically — check notes on a row before assuming a null metric means TestWorks failed to detect it.
• notes is a free-text field, empty for most rows; it's used to flag exceptions like the Batch H flex sourcing above or the FormLabs vertical-print orientation.
• 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).