Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Strain Energy Release Rate of Carbon/Epoxy Composite Material under Mixed Mode Delamination

혼합모우드 층간분리하에 있는 탄소/에폭시 복합재료의 변형에너지 방출율

  • 염영진 (울산대학교 공과대학 기계공학과) ;
  • 유희 (울산대학교 공과대학 기계공학과)
  • Published : 1999.06.01
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Abstract

A modified mixed mode bending test was performed to investigate the mixed mode delamination for carbon/epoxy composite material. Various mixed mode ratios could be produced by changing the applied load position on the loading lever and the bending load position on the specimen. The modified mixed mode bending test was analyzed to obtain strain energy release rates using beam theory, compliance method and finite element method, This results were in good agreement with the experimental result, which confirmed the validity of this test.

탄소/에폭시 복합재료 적층판의 혼합 모드 층간분리 연구를 위하여 수정 혼합 모드 굽힘시험이 수행되었다. 하중레버의 하중 부가점 위치와 시편에 작용하는 굽힘 하중점 위치를 변화시킴으로써 다양한 혼합 모드 비를 구할 수 있었다. 이론과 시험 및 유한요소 해석을 병행하여 변형에너지방출율을 구한 결과 이들은 잘 일치하여 일반적으로 사용될 수 있는 시험 방법으로 정립될 수 있음을 확인하였다.

Keywords

References

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