Effects of the off-axis layer on the tensile failure of carbon fiber reinforced polymer [0/θ]ns laminates

2019 International Conference on Advances in Materials, Mechanical and Manufacturing

材料科学;机械制造

Deng, Xi^1 ; Wang, Wen-Xue^2 ; Matsubara, Terutake^2

Department of Aeronautics and Astronautics, Engineering School, Kyushu University, Motooka Nishi-ku Fukuoka

819-0395, Japan^1

Research Institute for Applied Mechanics, Kyushu University, Kasuga, Fukuoka

816-8580, Japan^2

关键词: Carbon fiber reinforced polymer;    Cohesive property;    Cohesive zone model;    Matrix cracking;    Micro scale models;    Multi-directional laminates;    Off-axis plies;    Tensile failures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/576/1/012024/pdf
DOI  :  10.1088/1757-899X/576/1/012024

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Off-axis plies have a great influence on the tensile failure stress of carbon fiber reinforced polymer (CFRP) multidirectional laminate. Matrix cracks in the off-axis plies will cause negative effect on the layers, leading to fatal failure of the laminate. A microscale cohesive zone model is proposed to explore the influence of matrix cracks in the off-axis plies on the tensile failure of [0/θ]ns laminates. Simulations of tensile failure of [0/θ]s laminate were performed by varying the off-axis ply angle θ ranging from 15° to 90° and the cohesive properties to investigate the effects of off-axis plies to the failure of the laminates. Tensile tests of [0/θ]2s laminates with various off-axis ply angles were conducted to validate the simulations of microscale model. The simulation results with matrix cracking are in high agreement with the experimental results, illustrating the influence of off-axis plies on the tensile failure of [0/θ]ns laminates.