CFRP 모자형 부재의 축 압궤 특성에 관한 연구

The most important purpose in designing vehicles is currently to focus on environment-friendly, economical, safety performance aspect. As for the environment-friendly and economical aspect, the issues are the overall movements toward lightweight vehicle production because of the fuel-efficiency improvement and heavier restriction on exhaust, however in contrast, the issues of the safety performance such as crush, comfort level and multi-functional programs lead to increase of vehicle weight. Therefore, the designing vehicles should be more interested in the aspect of securing safety performance, but at the same time, it also should consider reducing weight of structural member of vehicle. In this study, to lower the weight of side members, CFRP side members were manufactured by CFRP uni-direction prepreg sheet. The stacking condition related to the energy absorption of composite materials is being considered as an issue for the structural efficiency. Therefore, the axial collapse tests were conducted by changing the stacking condition such as fiber orientation angle and interlaminar number. In this paper the results of experimental works pertaining to the orientation angle and interlaminar number characteristics of CFRP(Carbon Fiber Reinforced Plastic) hat shaped section members that were subjected to static axial compressive loading are presented.