Equivalent energy release rate and crack stability in the End Notched Flexure with inserted roller mixed mode I/II test

被引：8

作者：

Boyano, A. ^{[1
,2
]}

De Gracia, J. ^{[1
,2
]}

Arrese, A. ^{[1
,3
]}

Mujika, F. ^{[1
,3
]}

机构：

[1] Dept Mech Engn, Mat Technol Grp, Nieves Cano 12, Vitoria 01005, Spain

[2] Univ Basque Country, UPV EHU, Fac Engn Vitoria Gasteiz, Nieves Cano 12, Vitoria 01006, Spain

[3] Univ Basque Country, UPV EHU, Fac Engn Gipuzkoa, Plaza Europa 1, San Sebastian 20018, Spain

来源：

THEORETICAL AND APPLIED FRACTURE MECHANICS | 2017年 / 87卷

关键词：

Composites; Delamination; Mixed-mode; Energy release rate; Crack stability; ADHESIVELY BONDED JOINTS; INTERLAMINAR FRACTURE; TEST CONFIGURATION; COMPOSITE JOINTS; BENDING TESTS; PROPAGATION; SPECIMEN; TOUGHNESS;

D O I：

10.1016/j.tafmec.2016.11.001

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The crack propagation performance of the End Notched Flexure with inserted roller test is analyzed. An equivalent energy release rate is proposed taking into account the interaction of the modes I and II, based on the linear failure criterion. Experimental results obtained with specimens of F593/T300 carbon/epoxy unidirectional composite show a good agreement with the proposed approach. The stability condition is theoretically developed based on the derivative of the equivalent energy release rate, under fixed load condition and fixed displacement condition. Experimental tests have been carried out to assess the proposed equivalent energy release rate and to evaluate the crack stability condition. An analysis of the influence of compliance measurement on the crack length and on the equivalent energy release rate is included. Based on the results obtained, test conditions with initial mode ratios between 65% and 75% are recommended. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：99 / 109

页数：11