Weld hardness ratio and liquid metal embrittlement crack's detrimental effect on resistant spot weld strength
Why this work is in the frame
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Bibliographic record
Abstract
Studies on the detrimental effect of liquid metal embrittlement cracks on resistant spot weld joint strength have shown conflicting results. To help understand the cause of these discrepancies, this study will investigate the effect of liquid metal embrittlement cracks on weld strength under different hardness ratios between fusion zone and base metal. In this study, a novel methodology using finite element modelling and experimental testing reveals that the liquid metal embrittlement crack affects the weld strength differently under different weld's hardness ratio, i.e. under low hardness ratio, the cracks have a relatively big effect on weld strength while under high hardness ratio the cracks have relatively little effect. This work helps further understand when LME cracks are detrimental to strength.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| 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