Effect of delamination on the flexural response of [+45/−45/0]2s carbon fibre reinforced polymer laminates

Liu, Z., Li, P. and Srikanth, N. (2019) Effect of delamination on the flexural response of [+45/−45/0]2s carbon fibre reinforced polymer laminates. Composite Structures, 209, pp. 93-102. (doi:10.1016/j.compstruct.2018.10.049)

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Abstract

The damage arising in the manufacturing or service operation can result in the degradation in mechanical properties or even structural failure in composite laminates. This work investigated the flexural behaviour of [+45/–45/0]2s carbon fibre reinforced polymer laminates with the artificially embedded delamination (pre-delamination) at different interfaces. After static flexural experiments, the internal 3D damage including various failure modes was characterised and quantified in the X-ray microtomography. It was found that regardless of the pre-delamination, similar in-ply (fibre failure, matrix cracking and fibre/matrix debonding) and interlaminar (delamination) failure modes occur dominantly in the outer ply group of the compression zone in all the laminates. However, the pre-delamination and its location have the influence on both the distribution and size of the 3D damage, and thus on the flexural properties. The flexural strength that is reduced by pre-delamination is the most (least) sensitive to the pre-delamination embedded at the third (ninth) interface.

Item Type:Articles
Additional Information:
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f Defence Singapore – Nanyang Technological University (NTU) Joint Applied R&D
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Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Li, Dr Peifeng
Authors: Liu, Z., Li, P., and Srikanth, N.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Composite Structures
Publisher:Elsevier
ISSN:0263-8223
ISSN (Online):1879-1085
Published Online:19 October 2018
Copyright Holders:Copyright © 2018 Elsevier Ltd.
First Published:First published in Composite Structures 209: 93-102
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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