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경량화용 CFRP 모자형 단면 부재의 충돌 압췌특성에 관한 연구
황우채(Woochae Hwang),차천석(Cheonseok Cha),양인영(Inyoung Yang) 한국자동차공학회 2008 한국자동차공학회 지부 학술대회 논문집 Vol.2008 No.11
Currently, the most important purpose in designing automobile is environment-friendly and safety performance aspect. However, the vehicle structure must be lightweight in order to improve fuel efficiency and reducing exhaust fumes. Therefore, the design of automobile should be inclined towards the safety aspects. but at the same time, it also consider reducing the structural weight of an automobile. In this study, CFRP side members with hat-shaped section was manufactured. The impact collapse tests performed with change of the stacking condition, such as interlaminar. The collapse mode and energy absorption capability were analyzed according to interlaminar number.
황우채(Woo-Chae Hwang),서현경(Hyeon-kyeong Seo),이길성(Kil-Sung Lee),김지훈(Ji-Hoon Kim),양인영(In-Young Yang) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The most important objective in designing automobile is currently focus on environment-friendly, safety performance aspect. As for the environment-friendly and economical aspect, the issues are the overall movements toward lightweight automobile production. In this paper, based on the characteristics of square section member, the collapse characteristics and energy absorption capability of hat-shaped section members were analyzed. The axial static collapse tests were performed for each section members. The collapse modes and the energy absorption capability of the each section member were analyzed. The square sectional members which were composed of the aluminum, CFRP and hybrid were used and hat-shaped sectional members which were composed of the CFRP, hybrid were used by the specimens. In the collapse characteristics and energy absorption capability of the each member compared and they were analyzed.
경량화용 Al/CFRP 사각 구조부재의 압궤 특성에 관한 연구
황우채(Woo-Chae Hwang),심재기(Jae-Ki Sim),양인영(In-Young Yang) 한국생산제조학회 2011 한국생산제조학회지 Vol.20 No.3
Aluminum or CFRP is representative one of the lightweight materials. Collapse behavior of Al/CFRP square structural member was evaluated in this study based on the respective collapse behavior of aluminum and CFRP member. Al/CFRP square structural members were manufactured by wrapping CFRP prepreg sheets outside the aluminum hollow members in the autoclave. Because the CFRP is an anisotropic material with mechanical properties, The Al/CFRP square structural members stacked at different angles(±15°, ±45°, ±90°, 90°/0° and 0°/90° where the direction on 0° coincides with the axis of the member) and interface numbers(2, 3, 4, 6 and 7). The axial impact collapse tests were carried out for each section members. Collapse mode and energy absorption characteristics of the each member were analyzed.
CFRP 이중 모자형 단면부재의 계면수 변화에 따른 충격압궤거동 평가
황우채(Woochae Hwang),차천석(Cheonseok Cha),양인영(Inyoung Yang) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
This study is to experimental investigations are carried out for CFRP double hat shaped section members in order to study the effect of various stacking condition and shape of section. Impact collapse tests were performed with change of the stacking condition, such as fiber orientation angle and shape of section. Collapse mode and energy absorption characteristics were analyzed. The CFRP double hat shaped section members which manufactured from unidirectional prepreg sheets were made of 8ply. The collapse mode and energy absorption characteristics were analyzed for CFRP double hat shaped section member according to the interface numbers(2, 3, 4, 6 and 7) and outerlayer(90°, 0°)
적층구성이 CFRP 사이드 부재의 충돌안전성에 미치는 영향
황우채 ( Woo Chae Hwang ),양인영 ( In Young Yang ) 한국안전학회(구 한국산업안전학회) 2014 한국안전학회지 Vol.29 No.3
The global demand for reduction in the weight of automobiles has led many countries to focus on the development of hybrid, eco-friendly, and electric cars. Reduction in the weight of materials can both increase fuel efficiency and maximize automobile performance. Therefore, the design of automobile should be inclined towards the safety aspects. but at the same time, it also consider reducing the structural weight of an automobile. In this study, CFRP side members with circular and double hat shaped section was manufactured. The impact collapse tests performed with change of the stacking condition, such as variation of interface number and outerlayer angle. The impact collapse load and absorbed energy were quantitatively analyzed according to the changes in section shapes and stacking condition. This analysis was performed to obtain design data that can be applied in the development of optimum lightweight members for automobiles.