Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 151, Issue -, Pages 302-309Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2017.09.002
Keywords
Carbon fibers; Laminate; Delamination; Failure criterion; Fiber bridging
Categories
Funding
- National Natural Science Foundation of China [11572058, 11772028, 11372020]
- Academic Excellence Foundation of BUM
Ask authors/readers for more resources
Large-scale fiber bridging developed in the CRFP multidirectional (MD) laminates upon mixed-mode fracture has a significant effect on the delamination behavior. Without considering the effect of fiber bridging, traditional delamination propagation criteria fail to evaluate the delamination behavior in MD laminates. To solve this problem, an improved criterion is proposed here, which accounts for the delamination resistance curve (R-curve) induced by fiber bridging. Systematic delamination tests under mode I, II and mixed loadings were carried out to determine the unique parameter in the criterion and a numerical delamination model based on the cohesive zone model (CZM) was established with implementation of the improved criterion. Initial and ultimate damage loads from numerical predictions and experiments show good agreements, verifying the accuracy of the improved criterion on evaluating the mixed-mode I/II delamination behavior in MD laminates. Additional mixed-mode delamination test was conducted, which was used to validate the applicability of the improved criterion on evaluating the delamination behavior with any other mode-mixity ratios (p-ratios). (C) 2017 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available