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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/>
증예보고 : 상악골 LeFort 1 골절단술과 하악골 상행지 수직골절 단술을 이용한 하악골 전돌증환자의 악교정예
박영철(Y. C. Park),기화영(Wha Young Key),양성익(Sung Ik Yang),이의웅(Eui Wung Lee) 대한악안면성형재건외과학회 1985 Maxillofacial Plastic Reconstructive Surgery Vol.7 No.1
In many instances, orthognathic surgical eases require multiple osteotomies in the maxilla and mandible to achieve the most desirable result. When the entire maxilla and mandible are freed from their relationship with the remaining craniofacial complex, accurate repositioning and adequate stabilization can present problems. But, in select cases, with carefu1 treatment p1anniing and meticulous execution of surgical techniques, and optimal postoperative care, the simultaneous of both the maxilla and mandible can be achieved with few adverse sequelae and complications. This is a case of mandibular prognathism including maxillary retrusion of 19 year-old male, which was corrected by simultaneous mobilization, of bath the maxilla and maxilla and postoperative orthodontic treatment.