| Autor: |
NATHAN SESAR, DAVID MOLLENHAUER, DAN RAPKING, MARK PANKOW |
| Rok vydání: |
2022 |
| Zdroj: |
American Society for Composites 2022. |
| Popis: |
The objective of the ongoing research is to understand the progressive damage and propagation of cracks in a 3D woven composite. This is part of a larger scale effort to understand the progressive damage response of notched tensile and compressive composites. The current effort has gone extensively into studying the response with unidirectional (UD) and traditional textile composites. This project specifically dives into a 3D orthogonal woven composite and is meant to bolster the ongoing effort with information on how binder fibers can change the dynamic crack path as it progresses from the notch throughout the specimen. A 3D orthogonal preform is infused with resin and tested using compact compression (CC) and over-height compact tension (OCT). 7 Samples of each are tested using a custom load fixture and loaded to varying values to capture damage at different stages of failure. Each sample is studied with digital image correlation (DIC) and X-ray Computed Tomography (CT). It is found that even with existing thermal cracks due to increased temperature cure, that the samples retain toughness and strength and show extensive plasticity. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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