Fracture parameter identification by Digital Image Correlation and Finite Fracture Mechanics for millimeter-scale samples

被引：1

作者：

Duminy, Thomas ^{[1
]}

Doitrand, Aurelien ^{[1
]}

Meille, Sylvain ^{[1
]}

机构：

[1] Univ Lyon, CNRS, INSA Lyon, UCBL,MATEIS,UMR 5510, 7 Ave Jean Capelle, F-69621 Villeurbanne, France

来源：

ENGINEERING FRACTURE MECHANICS | 2024年 / 295卷

关键词：

Finite fracture mechanics; Digital image correlation; Small-scale; WEDGE SPLITTING TEST; COHESIVE ZONE; COUPLED CRITERION; CRACK INITIATION; REFRACTORIES; SPECIMENS; TOUGHNESS; STRENGTH; ONSET; TESTS;

D O I：

10.1016/j.engfracmech.2023.109770

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In situ wedge splitting tests are conducted on millimeter-size PMMA samples. A method to determine the material tensile strength and critical energy release rate (ERR) from digital image correlation (DIC) and a full finite element implementation of the coupled criterion (CC) is proposed. The best material parameter identification is achieved when the CC implementation based on measured displacements on a contour of a subdomain is performed, providing the crack initiation length remains small compared to the subdomain size.

引用

页数：13

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