Design and analysis of a new six-point edge crack torsion (6ECT) specimen for mode III interlaminar fracture characterisation

被引：17
|
作者：
Pereira, A. B. [1 ]
de Morais, A. B. [1 ]
de Moura, M. F. S. F. [2 ]
机构：
[1] Univ Aveiro, Dept Mech Engn, P-3810193 Aveiro, Portugal
[2] Univ Porto, Fac Engn, Dept Mech Engn, P-4200465 Oporto, Portugal
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2011年 / 42卷 / 02期
关键词：
Polymer-matrix composites (PMCs); Delamination; Fracture toughness; Finite element analysis (FEA); ECT TEST; COMPOSITE-MATERIALS; TOUGHNESS; TESTS;
D O I：
10.1016/j.compositesa.2010.10.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new six-point edge crack torsion (6ECT) test is proposed for the measurement of the mode III interlaminar critical strain energy release rate G(IIIC). In contrast with the common ECT test, which is limited to the evaluation of initiation G(IIIC) values, the 6ECT allows the measurement of a mode III R-curve. Actually, the existence of such effect has been suggested in various experimental studies. The suitability of the 6ECT carbon/epoxy specimens combined with an effective crack based data reduction scheme is validated by finite element analyses with the virtual crack closure technique and cohesive elements. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：131 / 139
页数：9
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