| 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 |
Theoretical Analysis of CFRP Composite Laminates Under Compression with Small Ply Angle Change Using Thin-Ply Composites |
| Author(s) |
Masaaki Nishikawa, Kohei Yamada |
| On-Site Speaker (Planned) |
Masaaki Nishikawa |
| Abstract Scope |
Thin-Ply CFRP (Carbon Fiber Reinforced Plastics) composite laminates with ply thickness as thin as 20 to 40 µm is effective in suppressing transverse cracks inside the plies of the laminate due to their fracture mechanics effects. It is also known that the Thin-Ply laminates exhibit brittle fracture, and it is required to enhance the failure strain by the hybridization with metals or the laminate design for the pseudo-ductility. In recent years, automated fiber placement technology made it possible to increase the degree of freedom in the design of laminate configuration by using Thin-Ply CFRP prepregs. The laminate design that introduces a small fiber-orientation-angle difference at the interlaminar interface to suppress delamination initiation and propagation, or biomimetic spiral layup called Bouligand structure, have been proposed. These new laminate design with Thin-Ply CFRP exhibit nonlinear mechanical behavior, due to the effects of microcracks emanating from the edges or fiber rotation with the loading. This study focuses on the compressive properties of Thin-Ply CFRP laminates with such small angle changes. We present an elastic-plastic analysis for these composite laminates based on the Mori-Tanaka theory. In particular, we investigate the effect of fiber rotation on nonlinear mechanical behavior of Thin-Ply CFRP composite laminates. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |