Files

administrator b173ac82a9 fix(docs): fix formatting issues in README.md

- adapt meta-/code-/obs- rules to the local Python benchmark pipeline
- replace db-sql-ddl, code-config-env-scope, test-e2e-pytest with pipeline equivalents
- add code-python-style, data-determinism, data-naming-units, bench-methodology, build-pipeline-tasks
- normalize specs and README typography to ASCII per code-data-formatting
- rewrite root CLAUDE.md trigger table; add .cursorrules and .gitignore
- specs: pipeline plan and task specs 00-11
- rules: 19 binding rule files adapted for this project
- docs: CLAUDE.md rule-trigger table
- config: .cursorrules commit convention, .gitignore excluding out/ and .venv/
- docs: rewrite README.md with pipeline diagrams, setup guide, result placeholders
- config: requirements.txt for the closed dependency list
- datagen: make_lab_config.py writes out/config/lab_config.yaml and .done marker

2026-07-11 13:39:13 -04:00

3.5 KiB

Raw Blame History

01 - Laboratory Configuration

Context / Goal

Define the authoritative laboratory model that all downstream tasks (data generation, ontology, schemas) must follow. This file is a specification, not code; produce ./out/config/lab_config.yaml capturing everything below.

Dependencies

None (root task).

Material system

Substrate: Ti-6Al-4V coupons, 10 × 10 × 3 mm.
Adhesion layer: Cr (sputtered).
Functional coating: Pt-Au deposited in a composition gradient across each wafer; film thickness range 0.3-1.1 µm.

Instruments

Role	Instrument	Data produced
Friction	RAPID custom high-throughput parallelized 6-probe tribometer	COF vs cycle per track; test conditions
Nanoindentation	Bruker TI980 TriboIndenter	Hardness, reduced modulus (25 indents/coupon)
Composition	Bruker M4 Tornado micro-XRF (assumed model)	Pt/Au wt% map per coupon (20×20 grid)
Deposition	Kurt J. Lesker PVD 200 sputter-down	Batch deposition parameters
Surface roughness	AFM	Topography image metadata + Ra/Rq per coupon
Film thickness	Optical profilometry	Thickness map per coupon (10×10 grid)
Simulation	SIMTRA (sputter transport Monte-Carlo)	Deposition atom-energy / composition profiles per deposition run

Deposition matrix (4 batches)

Batch	Pt:Au gun tilt	Pt power	Au power	Pt discharge	Au discharge
B721	20°:0°	150 W	50 W	432 V	311 V
B722	20°:20°	100 W	100 W	399 V	352 V
B723	20°:20°	150 W	50 W	430 V	311 V
B724	0°:20°	50 W	150 W	376 V	340 V

Hierarchy and volumes

batch (×4) → wafer (×3 per batch) → coupon (×49 per wafer, 7×7 grid) = 588 coupons

Friction testing: 480 coupons (4 RAPID runs × 120 coupons: 5 plates × 6 probes × 4 coupons/square).
Reserve/QA: 108 coupons (no friction data; characterization only).
Environments: run R1,R2 = Lab Air (µ_normal); run R3,R4 = Dry N2 (µ_dry_nit).
Tracks: 3 replicate tracks per friction coupon, identical conditions, fresh counterface ball per track (3 balls per holder) → 1,440 tracks.
Cycles: 1,000 reciprocating cycles per track → 1,440,000 cycle records.
Friction loops: every 100th cycle stores a position-resolved loop of 200 points → 1,440 × 10 × 200 = 2,880,000 loop points.
Nominal test conditions: normal load 100 mN, stroke 1 mm, sliding speed 1 mm/s, ruby (Al2O3) ball Ø 3.175 mm; RH 45% (Lab Air) / 2% (Dry N2); T 23 ± 1 °C.

Physical models for value simulation (used in task 03)

Coupon Au wt%: linear gradient across wafer x-position, batch-dependent center: B721 8%, B722 25%, B723 10%, B724 60%; ±5 wt% span across wafer; XRF grid adds N(0, 0.3) noise.
COF run-in: cof(c) = cof_ss + (cof_0 - cof_ss)·exp(-c/τ) + N(0, σ); cof_0 ∈ [0.35, 0.5]; τ ∈ [100, 400] cycles; σ = 0.01.
Steady-state COF depends on Au% and environment: Lab Air cof_ss = 0.32 - 0.0015·Au%; Dry N2 cof_ss = 0.24 - 0.0012·Au%; clamp ≥ 0.12.
Hardness: H = 8.5 - 0.05·Au% + N(0, 0.25) GPa; reduced modulus Er = 190 - 0.6·Au% + N(0, 4) GPa.
Roughness Ra: log-normal, median 5 nm, σ_log 0.3.
Thickness: 0.3-1.1 µm, radial wafer profile + noise.
Wear volume per track: Archard-like V = k·F·s, k depends on Au% and environment; store as track-level derived measurement.

Output

./out/config/lab_config.yaml - machine-readable version of everything above (volumes, matrices, model coefficients, seed).
Marker ./out/.done/01.ok.

3.5 KiB Raw Blame History Unescape Escape