Investigating the Unrecovered Displacement of Glass Fibre Reinforced Polymers Due to Manufacturing Conditions
Why this work is in the frame
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Bibliographic record
Abstract
In this industrial case study, the effect of processing conditions on the cure progression as well as the magnitude of creep strain due to storage/post-operations after de-moulding was investigated via a wet lay-up manufacturing of a glass fibre reinforced polymer (GFRP), commonly used in boat building. In addition, how the creep and the related permanent deformation in its recovery stage can be prevented or controlled was a focus of the study. Dynamic Mechanical Analysis (DMA) was used to monitor the creep rate of test samples while a constant stress was applied to mimic the sagging condition of GFRP parts during assembly stages. Differential Scanning Calorimetry (DSC) was used to determine the degree of cure as well as the glass transition temperature (Tg) at different curing temperatures. A direct relationship was found between the curing and the operating temperatures, and the unrecovered displacement seen in the final GFRP part. The unrecovered displacement was hypothesized to occur mainly due to a combination of cure progression and creep during the manufacturing process. Namely, cure progression results in the development of stiffness retaining the elastic deformation, while creep can create irreversible viscous flow. The results obtained may be particularly helpful to manufacturers of open moulded parts to prevent the costly consequence from excessive recurring of parts after de-moulding. doi:10.12783/issn. 2168-4286/2.2/Milani
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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 | 0.001 | 0.002 |
| 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 it