Design and manufacturing of a representative thermoplastic composite primary aerospace structure
Bibliographic record
Abstract
The use of high performance thermoplastic composite structures in aerospace has seen a great increase in the past decade. Thermoplastic composites present many advantages over thermoset composites in terms of processing and performance, such as high toughness, high temperature performance, chemical resistance and low flammability. However, compared to thermoset matrices, the lack of material database and the limited knowledge available in the open literature regarding the manufacturing techniques have restrained their use to a relatively small number of composite structural applications. In this study, the design and the autoclave manufacturing of a PEEK/carbon hat-stiffened panel representative of an aerospace primary structure were investigated. Design and mechanical performances, including strength and stability issues, were first evaluated with finite element analysis and analytical methods. Process simulations were also performed to define the tooling material and geometry to be used, based on the evolution of the thermo-mechanical material properties during the autoclave process.
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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 | 0.000 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
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".