The Curved Interfacial Crack Analysis between Foam and Composite Materials under Anti-plane Shear Force

반평면 전단하중력을 받는 곡면형상을 가지는 폼과 복합재료 접합부의 계면크랙에 관한 연구

  • 박상현 (연세대학교 기계공학과 대학원) ;
  • 신재윤 (연세대학교 기계공학과 대학원) ;
  • 전흥재 (연세대학교 기계·전자공학부)
  • Published : 2000.04.01

Abstract

The general solution of the anti-plane shear problem for the curved interfacial crack between viscoelastic foam and composites was investigated with the complex variable displacement function and Kelvin-Maxwell model. The Laplace transform was applied to treat the viscoelastic characteristics of foam in the analysis. The stress intensity factor near the interfacial crack tip was predicted by considering both anisotropic and viscoelastic properties of two different materials. The results showed that the stress intensity factor increased with increasing the curvature of the curved interfacial crack and it also increased and eventually converged to a specific value with increasing time.