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하이브리드 복합재료의 모드Ⅱ 층간파괴인성치에 관한 연구
김형진(HYUNG-JIN KIM),박명일(MYUNG-ILL PARK),곽대원(DAE-WON GWARK),김재동(JAE-DONG KIM),고성위(SUNG-WI KOH) 한국해양공학회 2002 韓國海洋工學會誌 Vol.16 No.4
This paper describes the effect of loading rate, specimen geometries and material properties for Mode Ⅱ interlaminar fracture toughness of hybrid composite by using end notched flexure(ENF) specimen. In the range of loading rate 0.5~2㎜/min, there is found to be no significant effect of loading rate with the value of critical energy release rate(GⅡC). There is no dependence of the interlaminar fracture energy upon the specimen width over the specimen widths examined. The value of GⅡC for variation of initial crack length are nearly similiar values when material properties are CF/CF and GF/GF, however, the value of GⅡC are highest with the increasing intial crack length at CF/GF. The values of GⅡC for variation material properties are higher with the increasing moulding pressure when moulding pressures are 307, 431, 585㎪. The SEM photographs show good fiber distribution and interfacial bonding of hybrid composites when the moulding is the CF/GF.