Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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A Study on Mixed Mode I/II Interlaminar Fracture Toughness of Carbon Fiber Reinforced Plastic Composites

CFRP 복합재료의 혼합모드 I/II 층간파괴인성치에 관한 연구

  • 김형진 (경상대학교 수송기계공학부/해양산업연구소) ;
  • 박명일 (경상대학교 대학원) ;
  • 김재동 (경상대학교 해양산업연구소) ;
  • 고성위 (부경대학교 기계공학부)
  • Published : 2000.08.31
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Abstract

This paper describes the effect of molding pressure, specimen geometries for Mixed Mode I/II interlaminar fracture toughness of carbon fiber reinforced plastic composites by using asymmetrical double cantilever beam(ADCB) specimen. The value of $G_{I/IIC}$ as a function of various molding pressure is almost same at 307, 431, 585 kPa. However it shows the highest value under 307 kPa molding pressure. The effect of $G_{I/IIC}$ due to the change of initial crack length of ADCB specimen was almost negligible in this study. It turns out that the condition for mix mode quasi-static crack growth in ADCB specimen is the ratio of the crack length to that of the specimen, i.e., ${\alpha}/L<0.4$.

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