한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

평직 탄소섬유강화 복합재료의 파괴인성평가

The Evaluation of Fracture Toughness for Woven Carbon Fibered Reinforced Composite Materials

  • 박홍선 (성균관대학교 기계공학과) ;
  • 이우형 (SK 건설 플랜트사업부) ;
  • 금진화 (성균관대학교 기계공학과) ;
  • 최정훈 (성균관대학교 기계공학과) ;
  • 구재민 (성균관대학교 기계공학부) ;
  • 석창성 (성균관대학교 기계공학부)
  • 투고 : 2010.04.15
  • 심사 : 2010.07.02
  • 발행 : 2010.10.01
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초록

This study examined how the fracture toughness is affected according to the variation of the initial crack length and the fiber arranged angle using FEA method and experimental method. Therefore, the energy release rates were calculated and compared by J-integral method and VCCT(Virtual Crack Closure Technique). The results of fracture toughness test verified these results. At this time, the locus method was used in order to determine the energy release rate. When the results of FEA were compared with those of experiment, all of those decreased with the increase of angle between load and the fiber arranged direction. The decrease was due to reducing maximum load and stiffness, and the reason of reduction has been judged that the inplane shear stress.

키워드

참고문헌

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