CHARACTERIZATION OF FAILURE AT THE COMPOSITE ADHESIVE LAYER WITH DEFECTS

Abstract

Abstract: Delamination is the main form of failure of composite materials. The bonding strength of the adhesive layers in composite materials has a direct impact on the overall strength of materials or structures, while it will inevitably produce holes or defects in the actual adhesive layer during manufacture of composite materials. In our work, fracture test of double-cantilever beam (DCB) specimen, its finite element simulation by using cohesive zone model and inverse identification of cohesive parameters were carried out. In addition, the bilinear cohesive zone model was compared with the multi-segment interpolation cohesive zone model in terms of the fracture simulation of adhesive layer. The simulation results show that the multi-segment interpolation cohesive zone model has achieved a better result, which is more suitable for predicting the delamination of composite materials.

Key words: delamination, holes, inverse analysis, multi-segment interpolation cohesive zone model

CLC Number:

TB332

TANG Zhe-tao, ZHAO Shuai, LIU Yong, XU Yang-jian. CHARACTERIZATION OF FAILURE AT THE COMPOSITE ADHESIVE LAYER WITH DEFECTS[J]. Fiber Reinforced Plastics/Composites, 2018, 0(9): 41-45.

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