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형상기억복합재료에 있어서 형상기억효과에 의한 피로균열전파특성에 관한 연구
박영철(Y.C.Park),윤두표(D.P.Yun),신인수(I.S.Sin),이준희(J.H.Lee),김순국(S.K.Kim),이규창(G.C.Lee) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.5_2
In this study. It is introduced that TiNi/Al shape memory composite as one of new material that used shape memory alloy(SMA). It is a method to produce a better strength of composite by occurring compressive residual stress in matrix. Using shape memory effect of TiNi fiber. The shape memory composites are made by powder metallurgy. Moreover. TiNiCo/Al composite is made by using TiNiCo alloy as fiber. And it is discussed the properties of fatigue crack propagation in the shape memory composite. <br/> The results of fatigue test of a shape memory composite. The fatigue strength of a shape memory composite increase in proportion to adding of wolume fraction of TiNi(Co) fiber at 363K. This fiber reinforced effect is related to the increase of volume fraction and pre-strain.<br/>
FRONT SUSPENSION의 LOWER ARM에 대한 최적설계
박영철(Y. C. Park),윤두표(D. P. Yun),강재욱(J. W. Kang),배명호(M. H. Bae),진두병(D. B. Jin),이범재(B. J. Lee) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
LOWER ARM which jointed Independant Front Suspension is resulted in stress distribution analysis by using Finite Element Method. These datas represented in the condition of 8 loads and 3- type- section (I, H and H+I) type. On the basis of it, It is optimized shape and dimension of LOWER ARM. The optimized performance shows that the H type of 3 types has an available strength and H' section, which proved by H type, finds safety factor and yield strength in each case of load condition.<br/> <br/>