Abstract
The present work focuses on further investigating the influences of the chemistry of an epoxy system and the testing temperature on the stress-transfer capability of the fibre-matrix interface in a glass fibre-reinforced composite. We discuss how the apparent interfacial shear strength (IFSS) is influenced by the hardener-to-epoxy ratio and testing temperature. The results indicated that the IFSS was strongly dependent on both matrix chemistry and testing temperature. It was observed that the IFSS showed a significant inverse dependence on testing temperature, with IFSS dropping as the temperature was increased for all ratios. Notably it was shown that once the testing temperature was raised above the glass transition temperature (Tg) that ratios possessing excess hardener had larger IFSS values. From the results presented it is hypothesized that residual radial compressive stresses at the interface are influenced by the chemistry of the matrix system and relax away at the higher testing temperatures.
| Original language | English |
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| Publication status | Published - 26 Jun 2022 |
| Event | The 20th European Conference on Composite Materials: Composites Meet Sustainability - Lausanne, Switzerland Duration: 26 Jun 2022 → 30 Jun 2022 Conference number: 20th https://eccm20.org/ |
Conference
| Conference | The 20th European Conference on Composite Materials |
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| Abbreviated title | ECCM20 |
| Country/Territory | Switzerland |
| City | Lausanne |
| Period | 26/06/22 → 30/06/22 |
| Internet address |
Keywords
- glass fibres
- fibre/matrix bond
- interfacial strength
- residual Stress