| 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 |
Unlocking Optimal Performance: Investigating Superior Strategies for Intermittent Fibre-Matrix Interface Enhancement |
| Author(s) |
Sina AhmadvashAghbash, Yentl Swolfs |
| On-Site Speaker (Planned) |
Sina AhmadvashAghbash |
| Abstract Scope |
Why consider weakening the interface in carbon-fibre-reinforced composites? While a strong interface yields a composite with high strength and stiffness, it often leads to brittle failure and limited energy absorption. By deliberately weakening the interface, one can enhance toughness by creating longer fibre debond lengths and subsequent pull-out mechanisms. However, this strategy comes with the drawback of reducing both strength and stiffness, necessitating a careful balance between these competing factors in composite design. Intermittent interfaces introduce a promising concept for achieving a balance of high stiffness, strength, and toughness in composites. Drawing inspiration from nature's mechanisms to enhance toughness, the overarching objective is to thoroughly comprehend and leverage the potential of intermittent interfaces to engineer fibre-reinforced composites with an outstanding combination of mechanical properties. A microscale numerical model proves invaluable in enhancing the efficacy of subsequent experimental pursuits in manufacturing intermittently-treated fibre-reinforced composites. The proposed finite element model addresses the research question of identifying the mechanisms behind intermittent interfaces with a synergistic blend of high strength, stiffness, and toughness. It also investigates how design parameters, such as the length and interval length of intermittent areas and their locations relative to the fibre break plane, influence the mechanical behaviour of these composites. The model predicts that an intermittent approach leads to extended debond lengths, yielding higher levels of energy dissipation compared to a uniformly-sized interface with higher values for strength, toughness and friction coefficient. Additionally, this method exhibits accelerated stress recovery in contrast to a uniform interface with weaker interfacial properties. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |