| 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 |
Improving Impact Toughness of Carbon Fiber Reinforced Composite Laminates Using Shear-Toughened Gel (STG): Mechanism and Performance Optimization |
| Author(s) |
Jianchao Zou, Wanrui Zhang, Shu Zhu, Yu Gao, Weizhao Zhang |
| On-Site Speaker (Planned) |
Weizhao Zhang |
| Abstract Scope |
The low fracture toughness and strength of carbon fiber reinforced composite laminates in the thickness direction make them sensitive to impact damage. Consequently, in the design of composite structures, impact resistance has inevitably become a critical factor. This work presents a novel design for carbon fiber reinforced composite laminates, in which a shear toughening gel (STG) based on polyborosiloxane-based was infiltrated to the carbon fabric and to form a layer with strain rate-dependent properties on fiber surfaces. Then, epoxy resin was injected into the STG-wrapped fabrics and cured to form solid composite laminates. Through this approach, toughness of the composite laminates could be significantly improved as the STG could absorb high-frequency energy during impact. For assessment, energy absorption capability of the composite containing STG was identified via low velocity impact tests, and the results indicated that the specific impact strength of STG-applied composite increased by 267%. In summary, this study provided a new strategy to improve impact resistance of fiber reinforced composite laminates. Further research would be conducted to optimize composition, weight ratio and infiltration of the STG. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |