Tribological Properties and Acoustic Emissions of Some Thermoplastics Sliding Against SAE52100
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Bibliographic record
Abstract
Measurements were made of the dynamic friction; wear volume and acoustic signal (AE) of several thermoplastics rubbing against smooth SAE-52100 steel. Polyoxymethylene, polyamide, poly(amide-imide), polypropylene, Poly(vinyl chloride), polytetrafluoroethylene, and polyethylene, were investigated using pin-on-disk configuration. Sliding speeds ranged from 0.05 to 0.45 m∕s, and normal loads from 40 to 160 N (2–8 MPa) for sliding distances varying from 4 to 20 km. Orthogonal experimental design and analysis method was used to develop wear equations expressing wear volume as function of the operating parameters. Consistent relations were also found between the integrated AE signal over time and the wear volume as well as the friction work.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it