| 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 |
Multiscale Modeling to Analyze Failure of Welded Joint of Thermosetting Carbon-Fiber-Reinforced Composites |
| Author(s) |
Tadashi Watanabe, Masato Honma, Yoshiaki Kawagoe, Keiichi Shirasu, Mototsugu Tanaka, Tomonaga Okabe |
| On-Site Speaker (Planned) |
Tadashi Watanabe |
| Abstract Scope |
A multiscale model was developed to analyze and predict failure of welded joint of thermosetting carbon-fiber-reinforced composites. A novel joining technology for the thermosetting composites has been proposed to assemble structures in a short time using a welding process. Such a joining process was enabled by a thin layer of thermoplastic resin formed on the surface of thermosetting composites. Although a reliable joint can be rapidly established by this technology, the failure of the welded joint of the thermosetting composites has not been sufficiently elucidated. Therefore, the multiscale model was developed to inspect microscopic phenomena in the failure of the welded joint of the thermosetting composites. Experimentally observed unique failure behavior of the welded thermosetting composites was captured by the multiscale model; it successfully predicted the failure mode transition, observed in response to fiber orientation change, from cohesive failure of the thermoplastic resin layer to substrate failure of the surface ply of the thermosetting composites. Furthermore, the simulation results obtained by the multiscale model revealed part of failure mechanism of the welded thermosetting composites, as the failure of the thermosetting composites was suggested to be induced by a dilatational deformation which occurred in microscopic region of resin matrix adjacent to carbon fibers. The developed multiscale model is expected to be utilized in designing process of structural applications of welding technology for thermosetting composites. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |