Durability of Glass-Fibre Reinforced Polymer Composites in Aqueous and High Temperature Environments
Why this work is in the frame
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Bibliographic record
Abstract
In this investigation glass-fibre/epoxy-resin laminates with [±45, 90 3 ] s lay-ups were immersed in distilled water at different temperatures. In particular, three sets of coupon specimens were exposed for about 2 years to varying histories consisting of dry conditions or immersion-dry-out-and-re-immersion treatments, while keeping the temperature constant for each set. Moisture absorption behaviour and the effect of the environment and temperature on the mechanical properties were determined. It was found that there was a strong synergy between temperature and environment. Immersion in distilled water at ambient temperature did not affect the mechanical properties, on the contrary, it increased the threshold strain to crack initiation. However, specimens immersed at T>50°C showed deterioration in all respects. Exposure to cycles of wet and dry conditions at high temperatures were the most damaging environment. The underlying damage mechanisms and microscopic causes leading to the deterioration of the mechanical properties are discussed.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 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