Prediction of quasi-static delamination onset and growth in laminated composites by acoustic emission

Saeedifar, Milad; Fotouhi, Mohamad; Ahmadi Najafabadi, Mehdi; Hosseini Toudeshky, Hossein; Minak, Giangiacomo

Abstract

© 2015 Elsevier Ltd. All rights reserved. The main objective of this study is to determine the crack tip position during propagation of mode I delamination and also to evaluate interlaminar fracture toughness (GIC) in glass/epoxy composite specimens. The crack tip location was identified using two methods: a) localization of the AE signal source and b) the cumulative AE energy. Interlaminar fracture toughness of the specimens was also determined using the ASTM standard methods and the AE-based methods. The AE-based methods results were in a close agreement with the results of ASTM standard. It was found that the novel AE-based methods are more applicable than conventional methods for characterization of the delamination.

• Journal Article Type: Article
• Acceptance Date: Sep 19, 2015
• Online Publication Date: Oct 2, 2015
• Publication Date: Feb 1, 2016
• Deposit Date: Oct 16, 2017
• Publicly Available Date: Oct 16, 2017
• Journal: Composites Part B: Engineering
• Print ISSN: 1359-8368
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 85
• Pages: 113-122
• DOI: https://doi.org/10.1016/j.compositesb.2015.09.037
• Keywords: glass fibres, delamination, fracture toughness, acoustic emission
• Public URL: https://uwe-repository.worktribe.com/output/913919
• Publisher URL: http://dx.doi.org/10.1016/j.compositesb.2015.09.037
• Contract Date: Oct 16, 2017