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

被引:72
作者
Saeedifar, Milad [1 ]
Fotouhi, Mohamad [1 ]
Najafabadi, Mehdi Ahmadi [1 ]
Toudeshky, Hossein Hosseini [2 ]
Minak, Giangiacomo [3 ]
机构
[1] Amirkabir Univ Technol, Nondestruct Testing Lab, Dept Mech Engn, Tehran, Iran
[2] Amirkabir Univ Technol, Dept Aerosp Engn, Tehran, Iran
[3] Univ Bologna, Alma Mater Studiorum, DIN Dept, I-47121 Forli, Italy
关键词
Glass fibres; Delamination; Fracture toughness; Acoustic emission; FATIGUE-CRACK GROWTH; UNIDIRECTIONAL GLASS/EPOXY COMPOSITES; FRACTURE-TOUGHNESS; DAMAGE CLASSIFICATION; MODE-I; MECHANISMS; INITIATION; EVALUATE; IMPACT;
D O I
10.1016/j.compositesb.2015.09.037
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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 (G(IC)) 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. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:113 / 122
页数:10
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