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균열길이와 층간분리 폭의 관계를 이용한 하이브리드 복합재의 층간분리 거동 평가

Evaluation of Delamination Behavior in Hybrid Composite Using the Crack Length and the Delamination Width

  • 송삼홍 (고려대학교 기계공학과) ;
  • 김철웅 (고려대학교 공학기술연구소)
  • 발행 : 2004.01.01

초록

Although the previous researches evaluated the fatigue behavior of glass fiber/epoxy laminates using the traditional fracture mechanism, their researches were not sufficient to do it: the damage zone of glass fiber/epoxy laminates was occurred at the delamination zone instead of the crack-metallic damages. Thus, previous researches were not applicable to the fatigue behavior of glass fiber/epoxy laminates. The major purpose of this study was to evaluate delamination behavior using the relationship between crack length and delamination width in hybrid composite material such as Al/GFRP laminate. The details of investigation were as follows : 1) Relationship between crack length and delamination width, 2) Relationship between delamination aspect ratio and delamination area rate, 3) Variation of delamination growth rate is attendant on delamination shape factors. The test results indicated that the delamination growth rate depends on delamination width delamination aspect ratio and delamination shape factors.

키워드

참고문헌

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