Dynamic characteristics of CFRP structural member according to change in stacking conditions

Abstract

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.