Interlaminar Stress and Delamination Analysis of Internally-Tapered Composite Laminates
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Bibliographic record
Abstract
In the present work, the interlaminar fracture behavior of internally-tapered composite laminates that have cracks in the drop-off region is investigated using J-integral and direct calculation methods. The influences of cracks at the resin layer–interleaf interface and at the interface between adjacent plies are studied. The composite laminate is modeled and analyzed using partial hybrid stress finite elements that are formulated based on the Hellinger–Reissner variational principle and the generalized plane deformation theory. In the formulation, only three interlaminar stress components that cause delamination at the interface are independently assumed in addition to displacement interpolation. Both the six-node triangular and eight-node quadrilateral hybrid finite elements (formulated and presented in a companion paper [He, K., Hoa, S.V. and Ganesan, R. “Stress Analysis of Tapered Composite Laminate Using Partial Hybrid Finite Elements”, J. Reinforced Plastics and Composities, 23:6, 2004.]) are used in the fracture analysis. A parametric study is conducted to determine the influences of geometric and material properties on the fracture behavior of the tapered laminate. Experimental work was carried out for the observation of fracture. The analysis results and the experimental observation are compared.
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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 | 0.001 | 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