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적층구성과 충돌에너지의 변화에 따른 CFRP 구조부재의 충격특성
여인구(In-Goo Yeo),최주호(Ju-Ho Choi),최영민(Yeong-Min Choi),양용준(Yong-Jun Yang),황우채(Woo-Chae Hwang),양인영(In-Young Yang) 한국생산제조학회 2013 한국생산제조학회지 Vol.22 No.6
This aims to examine experimentally the absorption behavior and strength of circular CFRP members with different stacking configurations on exposure to a separate impact velocity. In addition, considered the dynamic characteristics. Circular and square CFRP members were prepared from 8-ply unidirectional prepreg sheets stacked at different angles (0°/90° and 90°/0°, where the 0° direction coincides with the axis of the member) and interface numbers (2, 4, and 6). Based on the collapse characteristics of the circular CFRP members. In this study, for the circular members, the impact energies at crosshead speeds 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 (at circular members), respectively. Likewise, for the square members, the impact energies at crosshead speeds of 2.16 m/s, 1.85 m/s, and 1.67 m/s are 372.4 J, 274.4 J, and 223.44 J (at square members).
적층각 및 형상 변화에 따른 CFRP 구조부재의 동적 특성
여인구(In-Goo Yeo),최주호(Ju-Ho Choi),양인영(In-Young Yang) 한국생산제조학회 2013 한국생산제조학회지 Vol.22 No.3
Carbon fiber reinforced plastic (CFRP) has many desirable qualities, including being lightweight and very strong. These characteristics have led to its use in applications ranging from small consumer products to vehicles. Circular and square CFRP members were fabricated using 8ply unidirectional prepreg sheets stacked at different angles ([+15°/-15°]4, [+45°/-45°]4 and [90]8, where 0° coincides with the axis of the member). Based on the collapse characteristics of a CFRP circular member, the collapse characteristics and energy absorption capability were analyzed. Impact collapse tests were carried out for each section member. In this study, the impact energies at crossheads speeds of 5.52 m/s, 5.14 m/s and 4.57 m/s were 611.52 J, 529.2 J and 419.44 J (circular member) 2.16 m/s, 1.85 m/s and 1.67 m/s are 372.4 J, 274.4 J and 223.44 J (square member). The purpose is to experimentally examine the absorption behavior and evaluation the strength in relation to changes in the stacking configuration when the CFRP circular members with different stacking configurations were exposed to various impact velocities. In addition, the dynamic characteristics were considered.