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김종명(J.M.Kim),김대기(D.G.Kim),이호도(H.D.Lee),조원석(W.S.Cho),박종기(J.G.Park),고대열(D.Y.Ko) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_2
Automotive light weight part using alloy ADC12 was fabricated by modified HPD with vacuum and partial squeeze method. The effect of vacuum and partial squeeze time lag on the macro and microstructure was investigated, especially on the distribution of porosities and shrinkages. The possibility of application of additional heat treatment, those are T5,T6 was also examined by testing mechanical properties including hardness, tensile strength, elongation, impact energy. The result shows that applying the vacuum and optimum partial squeeze condition could make the part free from coarse filling defects and thus T6 application possible.<br/>
AI 복합재 Crankshaft Damper Pulley Hub 개발
김종명(J.M.KIM),김대기(D.G.KIM),김건상(K.S.KIM),조원석(W.S.CHO) 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
AI₂O₃-SiO₂-ZrO₂short fiber reinforced aluminium matrix composites have been produced by squeeze casting. The specimens were evaluated as a function of various mechanical and phisical properties such as hardness and compressive stress, thermal expansion coefficient, and wear resistance. The results were compared those of conventional cast iron(FC25). The characteristics of short fiber in the preform also have been investigated via micro analyzing technique. AI₂O₃-SiO₂-ZrO₂system showed an excellent wear resistence which is the most important characteristic, and is expected to replace cast iron to improve weight and engine performance. Crankshaft damper pulley hub has been produced using AI₂O₃-SiO₂-ZrO₂ short fiber reinforced aluminium matrix composite. Bolt axial tension relaxationand thermal cyclic test were performed. The products developed descrived above provide a hub weight reduction of approximately 60% and a crankshaft damper pulley weight reduction of approximately 20%.
알루미늄 스페이스 프레임 적용 차량의 충돌안전도를 고려한 설계 및 해석
김범진(B.J.Kim),김정호(J.H.Kim),김병길(B.K.Kim),허승진(S.J.Heo),강혁(H.Kang),김종명(J.M.Kim) 한국자동차공학회 2002 한국자동차공학회 Symposium Vol.2002 No.11
To achieve the weight reduction and the high-safety of the automotive body, we developed the aluminum space<br/> frame vehicle with respect to the light weight material. In this study, we performed the axial crush test and 3-point<br/> bending collapse test with aluminum extrusions which applied the structural foam to decide the application<br/> possibility with respect to the automotive crashworthiness. We also designed the collapse initiators to improve the<br/> crash energy absorbing capability and get the stable collapse modes for the front side member. As a result, we could<br/> suggest the direction of safety design for an aluminum space frame vehicle.
[SAFETY 부문] 알루미늄 초경량차체의 충격에너지 흡수부재 설계 및 해석
윤병동(B.D. Yoon),허승진(S.J. Heo),김범진(B.J. Kim),김헌영(H.Y. Kim),김진국(J.K. Kim),강혁(H. Kang),김종명(J.M. Kim) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The weight of a aluminum intensive vehicle(AIV) can be generally reduced to about 30 percents than conventional steel vehicle without the loss of crash energy absorbing capability. In this paper, energy absorbing characteristics of aluminum extrusions are investigated from the axial and bending collapse test results. Using the crush test and analysis results, the design concepts for the effective energy absorber of aluminum extrusions are suggested. Full car crush/crash simulation of AIV are performed based on the FMVSS 208 regulations and the improved safety design concepts of AIV are evaluated in comparison to the conventional steel monocoque vehicle
[안전부문] 알루미늄 스페이스 프레임 차체의 안전도 설계 및 해석
백인봉(I.B.Pack),김범진(B.J.Kim),허승진(S.J.Heo),오제철(J.C.Oh),김헌영(H.Y.Kim),강혁(H.Kang),김종명(J.M.Kim) 한국자동차공학회 2001 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2001 No.11_2
To minimize and optimize for vehicle body weight occupying 20 to 30 percentage of vehicle weight, aluminum space frame has been adopted to vehicle body weight reduction and stiffness increase. In this paper, quasi-static axial and bending crush material tests were performed to investigate the crash energy absorbing characteristics of aluminum extrusions and three types of collapse modes were suggested. Furthermore, various types of section of front side member will reinforcement were selected and analyzed to optimize front structure's crash energy absorbing capacity. In addition, crash analysis of aluminum space frame vehicle were performed based on FMVSS 208 regulations. Based the crash simulation results, the safety design concepts of aluminum space frame vehicle were evaluated and compared with steel monocoque vehicle