Residual Stress Evolution During the Manufacturing of an Aircraft Component
Why this work is in the frame
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Bibliographic record
Abstract
This paper proposes a comprehensive analysis of the evolution of the surface residual stress state over the manufacturing stages of generic forged aircraft components. This has been achieved through an experimental procedure, involving forging of the generic component preforms, heat treatments, and machining operations on Computer Numerical Control milling and lathe centers. Surface residual stresses were measured using X-ray diffraction technique. The results showed a high scatter of surface residual stress measured in the same zone although the machining was done by the same cutting tool and under the same machining conditions. This suggests that the residual stress measured at a specific zone is significantly sensitive to previous and further major material removal such as rough pocketing the components have underwent. Moreover, it was found that the quenching and aging heat treatment drastically modify, not only the machining induced-residual stress state, but also the physical surface characteristics as demonstrated by the shear to normal residual stress ratio and the full width at half maximum of the X-ray diffraction peaks. Conclusively, the findings of this work help both researchers and manufacturers to better understand the challenges related to the design and the manufacturing of structural aircraft components made from forgings.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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