Étude 3D in-situ de la propagation de fissure de fatigue avec effets de surcharge dans un alliage AlSi
Bibliographic record
Abstract
Cet article porte sur la quantification expérimentale des effets de surcharge sur la croissance d’une fissure de fatigue au sein d’un alliage métallique, dans le cas particulier d’une fissure courte 3D. La tomographie synchrotron associée à la corrélation d’images numériques 3D rendent accessibles les champs de déplacement autour de la fissure. Il est ensuite possible de calculer des valeurs du facteur d’intensité des contraintes en différents points du front de la fissure, permettant d’y décrire quantitativement l’état de contraintes. Les premiers résultats sont présentés dans cet article.<br /><br />This article deals with the quantification the effects of overloads on the growth of small 3D fatigue cracks in a metallic alloy. The combined use of synchrotron tomography and digital volume correlation make it possible to compute the displacement fields around the crack. It is then possible to extract values of the stress intensity factor along the crack front, describing the stress state in that area. The first results obtained with this method are presented in this article.
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How this classification was reachedexpand
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 | 0.003 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.002 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.002 | 0.005 |
| Insufficient payload (model declined to judge) | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; both teacher heads agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".