Quantification of the crack fragmentation resulting from mode I plus FIII loading

被引：15

作者：

Cambonie, T. ^{[1
,2
]}

Lazarus, V. ^{[1
,2
]}

机构：

[1] Univ Paris 11, Univ Paris Saclay, F-91405 Orsay, France

[2] CNRS, UMR 7608, Lab FAST, F-91405 Orsay, France

来源：

20TH EUROPEAN CONFERENCE ON FRACTURE | 2014年 / 3卷

关键词：

Mode III; crack front segmentation; fracture morphology; instability; fractography; coalescence; FRONT INSTABILITY; FRACTURE;

D O I：

10.1016/j.mspro.2014.06.293

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The crack propagation path of a crack loaded initially in mode I+III is complex. It is formed by small facets moving away from the initial plane of the crack. Recently these facets have been retrieved in phase-field simulations and by a linear stability analysis of the phenomenon. The next step is to perform some close comparaison with experiments. In this aim, we present here a systematic method to quantify the complex geometry of the facets obtained in three point bending experiments. The post-mortem crack facies are obtained by profilometry and post-treated numerically. They are quantified by three parameters : the distance between the facets, the local and global twisting angles. They are measured as a function of the propagation distance and correlated to the local values of stress intensity factors obtained by finite element simulations. (C) 2014 Published by Elsevier Ltd. Open access under CC BY-NC-ND license.

引用

页码：1816 / 1821

页数：6

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