Effect of deformation of adhesive layer on evaluation of fracture toughness in adhesively bonded CFRP joints

Abstract

The purpose of this study is clarifying the effect of deformation of adhesive layer on evaluation of fracture toughness in adhesively bonded joints and identifying crack length and energy release rate GII by finite element method. The result of numerical analysis demonstrated that crack length and energy release rate GII were identified accurately by using equation that is added the section of shear deformation to conventional compliance equation, and critical compliance that is obtained by connecting the beginning point to critical point of load displacement curve.