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Study on the Effect of Void Defect on Mechanical Properties of Carbon Fiber Composites by Finite Element Method

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Abstract

Carbon fiber composites are increasingly used in various industries. However, void defect is inevitable in the curing process of composites, which greatly affect the properties of composites. In this paper, a three dimensions micro-scale representative volume element was developed with ABAQUS, and the effect of void defect on mechanical properties of carbon fiber reinforced composites (CFRC) was studied. The influences of the volume fraction, shape and distribution of void on the longitudinal and transverse tensile properties of CFRC were investigated. The results show that the transverse and longitudinal Young's modulus, yield strength and tensile strength decrease with the increase in void volume fraction. The shape of voids also affects the tensile properties. The smaller the inner angle of the void, the greater the influence on the transverse and longitudinal Young's modulus, yield strength and tensile strength. In addition, as the void distribution changes from dispersion to aggregation, the transverse and longitudinal Young's modulus, yield strength and tensile strength will decrease significantly. Moreover, the void defects have a greater influence on the transverse tensile properties than the longitudinal tensile properties.

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Acknowledgements

The authors gratefully acknowledge the financial support by the Key Research and Development Project in Shandong Province (2019JZZY010122) and Natural Science Foundation of Shandong Province (ZR2019MEE074, ZR2019BEE073).

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  1. School of Electromechanical and Automotive Engineering, Yantai University, Yantai, 264005, China

    Yongliang Li, Li Zhou, Mingyuan Zhang & Chengyu Song

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  1. Yongliang Li
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Li, Y., Zhou, L., Zhang, M. et al. Study on the Effect of Void Defect on Mechanical Properties of Carbon Fiber Composites by Finite Element Method. J. Inst. Eng. India Ser. C 103, 1433–1446 (2022). https://doi.org/10.1007/s40032-022-00881-1

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  • DOI: https://doi.org/10.1007/s40032-022-00881-1

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