Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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A novel hemispherical microbond specimen for evaluating the interfacial shear strength of single fiber composite

복합재료의 계면 전단강도를 평가하기 위한 새로운 반구형 미소접합 시험편

  • 박주언 (한양대학교 대학원 기계공학과) ;
  • 최낙삼 (한양대학교 기계공학과)
  • Published : 2008.04.30
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Abstract

A hemispherical microbond specimen adhered onto single carbon fiber has been proposed for evaluating the interfacial shear strength between epoxy and carbon fiber. Hemispherical microbond specimens showed low interfacial shear strength data and its small standard deviation as compared with the droplet one, which seemed to be caused by the reduction of the meniscus effects and of the stress concentration in the region contacting with the tip of pin hole. In comparison with the droplet specimen the hemispherical specimen showed the shear stress distribution similar to the cylindrical one in that low stress concentration arose around the contacting region. Average interfacial shear strength obtained by the hemispherical ones represented a good correlation with the hardness of the epoxy matrix.

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References

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