Affiliation:
1. College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China
2. Yangtze Delta Region Institute of Advanced Materials, Suzhou 215133, China
Abstract
In practical application situations, a carbon fiber-reinforced polymer (CFRP) is often subjected to complex dynamic loadings. The effect of the strain rate on mechanical properties is very important for the CFRP design and product development. In this work, static and dynamic tensile properties of CFRP with different stacking sequences and ply orientations were investigated. The results showed that the tensile strengths of CFRP laminates were sensitive to the strain rate, while Young’s modulus was independent of the strain rate. Moreover, the strain rate effect was related to the stacking sequences and ply orientations. The experimental results showed that the strain rate effects of the cross-ply laminates and quasi-isotropic-ply laminates were lower than that of the unidirectional-ply laminates. Finally, the failure modes of CFRP laminates were investigated. Failure morphology demonstrated that the differences in strain rate effects among cross-ply laminates, quasi-isotropic-ply laminates, and unidirectional-ply laminates were caused by the mismatch between the fiber and the matrix when the strain rate increased.
Funder
Key Projects of Jiangsu Industrial Technology Research Institute
Special Funding for Innovation Capacity Development in Jiangsu Province
Subject
Polymers and Plastics,General Chemistry
Cited by
5 articles.
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