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계면수 변화에 따른 CFRP/Foam 원형부재의 에너지 흡수특성
최주호,이길성,양인영,Choi, Ju-Ho,Lee, Kil-Sung,Yang, In-Young 한국생산제조학회 2010 한국생산제조학회지 Vol.25 No.5
In this study, one type of circular shaped composite tube was used, combined with reinforcing foam and without foam. Furthermore, CFRP(Carbon Fiber Reinforced Plastic) circular member manufactured from CFRP prepreg sheet for lightweight design. CFRP is an anisotropic material which is the most widely adapted lightweight structural member. The crashworthy behavior of circular composite material tubes subjected to static axial compression under same conditions is reported in this paper. Test was executed in order to compare the results to the energy absorption and collapse shape. The collapse mode during the failure process were observed and analyzed. The behavior of polymeric foams to the tubes crashworthiness were also investigated. According to the experimental results, specimens filled with foam are higher total energy absorption than the other specimens not filled with the foam.
Dynamic Characteristics of CFRP Structural Member according to Change in Stacking Conditions
최주호,황우채,정종안,양인영 한국정밀공학회 2015 International Journal of Precision Engineering and Vol. No.
CFRP (Carbon Fiber Reinforced Plastics) is an anisotropic material which is the most widely adapted lightweight structural member. CFRP of the advanced composite materials as structure materials for vehicles has a widely application in lightweight structural materials of air planes, ships and automobiles because of high strength and stiffness. Based on the collapse characteristics of CFRP member, the collapse characteristics and energy absorption capability were analyzed. The impact collapse tests were carried out for each section member. The CFRP circular members were made of 8ply unidirectional prepreg sheets stacked at different angles (15°,45°and 90°) and interface numbers (2, 4 and 6). CFRP is an anisotropic material which is the most widely adapted lightweight structural member. In this study, the impact energy at the crosshead speed of 5.52 m/s, 5.14 m/s and 4.57 m/s are 611.52 J, 529.2 J and 419.44 J. Based on the collapse characteristics of CFRP member, the collapse characteristics and energy absorption capability were analyzed. 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.