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.
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页数：13
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