Effects of printing direction on quasi‐static and dynamic compressive behavior of <scp>3D</scp> printed short fiber reinforced polyamide‐based composites
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Bibliographic record
Abstract
Abstract This paper investigated the effects of printing directions (path of nozzle movement) and strain rates on the performances of short carbon and glass fibers filled polyamide‐based composites prepared by fused deposition modeling (FDM). Cylindrical specimens printed in three different printing directions were compressed at a wide range of strain rate. The results showed that, for short fiber reinforced polyamide, the compressive properties of cylindrical specimens were affected by printing directions closely associated with the fiber orientation. The highest elastic modulus and yield strength of short fiber reinforced specimens were obtained when the printing direction was parallel to the applied loading direction, because the orientation of short fibers was preferred to the printing direction. However, at large deformation, the orientation of fibers in specimens changed, accompanied by a decrease in stress. With increasing strain rates, the short fiber reinforced polyamide with different fiber orientations showed different failure modes. However, the compressive behaviors of pure polyamide were similar, although they were printed in different printing directions.
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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 | 0.001 |
| 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