| 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 |
Compressive Strength Prediction of Carbon Fiber/Polyimide Composite at Elevated Temperature Using Micro/Meso-Scale Numerical Simulation Results |
| Author(s) |
Satoru Yoshikawa, Ryota Kawakami, Toshio Ogasawara, Yuichi Ishida, Mio Sato, Masahiko Miyauchi |
| On-Site Speaker (Planned) |
Satoru Yoshikawa |
| Abstract Scope |
Phenylethynyl terminated KAPTON-type polyimide, “TriA-X” exhibits excellent mechanical properties with high glass transition temperature (>350°), therefore it is suitable as matrix resin of heat-resistant carbon fiber reinforced plastic (CFRP) composites. For structural design using heat-resistant CFRP, it is necessary to evaluate the mechanical properties at various temperatures, resulting in great amount of cost and time. The objective of this study is to propose a numerical simulation method for predicting non-hole compressive (NHC) strengths at arbitrary temperatures using micro and meso-scaled simulation for targeting heat-resistant CFRP with TriA-X polyimide (CF/TriA-X). At first, the mechanical properties of TriA-X neat resin were evaluated at room temperature (RT), 200, and 250 °. Stress-strain behaviors in 45° and 90° direction of unidirectional (UD)-CF/TriA-X were estimated by micro-scale simulation consisting of fiber and matrix with material parameters of the neat resin. The compressive strength in fiber direction of UD-CF/TriA-X was estimated using a kink band model with the microscale simulation results. The NHC strength of cross-plied CF/TriA-X was estimated by meso-scale simulations using the compressive strength of UD-CFRP estimated by the kink-band model. As a result, it was demonstrated that the numerical results showed almost good agreement with the experimental results at room temperature. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |