| About this Abstract |
| Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Presentation Title |
Characterizing Fiber-Matrix Interface Debonding and Transverse Cracking in Macro Fiber Sample Composites |
| Author(s) |
Zaynab Hazaveh, Behrad Koohbor |
| On-Site Speaker (Planned) |
Zaynab Hazaveh |
| Abstract Scope |
Fiber-matrix interfacial debonding is the precursor for transverse cracking in fiber composites under transverse tension. Numerous computational studies have investigated the fiber-matrix debonding mechanisms with no or limited experimental verifications. We use a comprehensive experimental approach to systematically characterize the fiber-matrix interface at different length scales, from single-fiber to RVE scales. Tensile test samples with >25 randomly distributed macro fibers are utilized for this study to replicate RVEs in transversely loaded fiber composites. Two types of macro fibers, glass, and carbon macro fibers (1 mm dia.), are embedded in an epoxy matrix. Full-field measurement technique Digital Image Correlation (DIC) is combined with optical and scanning electron microscopy to experimentally characterize the deformation and strain fields developed in the vicinity of the fiber-matrix interface at each scale for each fiber-matrix pair. The proposed approach enables accurate and high-resolution characterization of the strain fields and crack path. The experimental measurements presented herein reveal a practical and accurate approach for characterizing deformation and failure characteristics at fiber-matrix interfaces and the mechanisms that control the evolution of interface cracking to transverse matrix failures in fiber composites. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |