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J. Ocean Eng. Technol. 2002;16(4):42-47.    

A Study on Mode II Interlaminar Fracture Toughness of Hybrid Composites
하이브리드 복합재료의 모드II 층간파괴인성치에 관한 연구
김형진,박명일,곽대원,김재동,고성위
경상대학교 수송기계공학부/해양산업연구소,경상대학교 수송기계공학부 대학원,경상대학교 수송기계공학부 대학원,경상대학교 수송기계공학부/해양산업연구소,부경대학교기계공학부
Copyright © 2002 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Key Words: Loading Rate, Hybrid Composite, Interlaminar Fracture Toughness, Initial Crack Length
핵심용어: 하중률, 하이브리드 복합재료, 층간파괴인성치, 초기크랙길이
Abstract
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 0.5~2mm/min, there is found to be no significant effect of loading rate with the value of critical energy release rate( $G_{IIc}$). there is no dependence of the interlaminar fracture energy upon the specimen width over the specimen widths examined. The value of $G_{IIc}$ for variation of initial crack length are nearly similiar values when material properties are CF/CF and GF/GF, however, the value of $G_{IIc}$ are highest with the increasing intial crack length at CF/GF. The values of $G_{IIc}$ for variation material properties are higher with the increasing moulding pressure when moulding pressures are 307, 431, 585


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