STR-954: FLEXURAL BEHAVIOR OF SANDWICH PANELS MADE OF FRP COMPOSITES: SYNTHETIC AND NATURAL FIBERS
Bibliographic record
Abstract
Sandwich panels made of fiber-reinforced polymer (FRP) skins and light-weight core materials have the potential to be effectively used in several structural applications such as cladding, decking, and roofing panels. The FRP skins resist the tensile and compressive stresses resulting from the flexure induced by transverse loadings and the core resists shear stresses, serves as insulation, and separates the FRP skins at a desired distance to provide required moment of inertial. In this study, two types of fiber materials, namely synthetic (glass) and natural (flax) fibers, as well as two types of core materials, namely polypropylene honeycomb (thickness: 6.4, 12.7, and 25.4 mm; density 80 kg/m3) and cork (thickness: 11 and 22 mm; density 200 kg/m3) core materials were used to make sandwich panels. A total of 105 small-scale sandwich beam specimens (50 mm wide × 200 and 350 mm long) were prepared and tested under four-point bending. The load-deflection behavior, strength, stiffness, and failure mode of the specimens were evaluated. Also, an analytical model was adopted to compute the flexural stiffness, shear rigidity, and core shear modulus of the sandwich panels. The analytical results showed a good agreement with the test results. Overall, the natural fiber and core materials showed a promising structural performance compared to their synthetic counterparts.
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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 | 0.001 |
| 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".