Fracture loads for ceramic samples with rounded notches

被引：47

作者：

Gómez, FJ ^{[1
]}

Elices, M ^{[1
]}

机构：

[1] Univ Politecn Madrid, Dept Ciencia Mat, E-28040 Madrid, Spain

来源：

ENGINEERING FRACTURE MECHANICS | 2006年 / 73卷 / 07期

关键词：

notches; cohesive crack; fracture criterion; ceramics;

D O I：

10.1016/j.engfracmech.2005.11.005

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Fracture loads of ceramic components with rounded notches cannot be computed by linear elastic fracture mechanics techniques because no stress singularity exists. We propose a procedure to estimate such fracture loads, which is based on the cohesive zone model and supported by experimental evidence with alumina, zirconia and silicon ceramics. Data from 18 ceramic materials and different notched geometries were used. The only material parameters needed were the tensile strength and the fracture toughness. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：880 / 894

页数：15

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