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경량화 자동차용 CFRP 원형부재의 계면수 변화에 따른 에너지흡수특성
여인구(Ingoo Yeo),편석범(Sukbum Pyun),양인영(Inyoung Yang) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
Carbon fiber reinforced plastic has many desirable qualities, including being lightweight and very strong. These characteristics have led to it being employed in applications ranging from small consumer products to vehicles. CFRP is an anisotropic material which is the most widely adapted lightweight structural member. Formation of specimen is prepared using autoclave and crushing test is utilized pneumatic vertical shock test. The CFRP Circular members were made of 8ply unidirectional prepreg sheets stacked at different angles ([902/02]s, [02.902]2, [90/0]s2, [90/0]2s, [0/90]4, where 0° direction coincides with the axis of the member) and interface numbers (2, 3, 4, 6 and 7). Based on the collapse characteristics of CFRP circular member, the collapse characteristics and energy absorption capability were analyzed. The impact collapse tests were carried out for each section member. In this study, the impact energy at the crosshead speed of 5.52m/s, 4.14m/s and 4.57m/s are 611.52J, 529.2J and 419.44J. The purpose is to examine experimentally absorption behavior and strength evaluation depending on changes in the stacking configuration when the CFRP circular member with different stacking configuration is exposed to separate impact velocity.
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