In-situ holotomography to study longitudinal debonding in glass fibre-reinforced composites
The formation of fibre breaks governs the longitudinal tensile failure of a unidirectional ply. It is widely believed that matrix plasticity, matrix cracking, and fibre-matrix debonding created near these fibre breaks help reduce the resulting stress concentrations. Therefore, to determine if matr...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | deu |
| Published: |
NDT.net
2025-02-01
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| Series: | e-Journal of Nondestructive Testing |
| Online Access: | https://www.ndt.net/search/docs.php3?id=30765 |
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| Summary: | The formation of fibre breaks governs the longitudinal tensile failure of a unidirectional ply. It is widely believed that matrix plasticity, matrix cracking, and fibre-matrix debonding created near these fibre breaks help reduce the resulting stress concentrations. Therefore, to determine if matrix cracking and fibre-matrix debonding surrounding fibre breaks occur in a glass fibre-epoxy composite, we performed in-situ tensile tests combined with holotomography at a resolution of 150 nm. Despite their presence in single-fibre composites manufactured with the same constituents, they were absent in regular composites. This suggests that single-fibre composites are not representative of regular composites. The study provides fresh insight into the damage mechanisms in these materials.
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| ISSN: | 1435-4934 |