Predicting the fracture strength of ceramic materials using the theory of critical distances

被引：150
作者：
Taylor, D [1 ]
机构：
[1] Trinity Coll Dublin, Dept Mech Engn, Dublin 2, Ireland
来源：
ENGINEERING FRACTURE MECHANICS | 2004年 / 71卷 / 16-17期
关键词：
ceramics; strength; notches; short cracks; critical distance;
D O I：
10.1016/j.engfracmech.2004.01.002
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
This paper describes a critical distance theory which uses local stress field information to predict the effect of stress concentrations. The approach was originally developed for predicting fatigue limits in metallic materials; this paper shows that it is also capable of predicting fracture strength in ceramics containing notches, long cracks and short cracks. The method is very easy to use, especially in conjunction With finite element analysis. It is proposed that it be given the name the theory of critical distances (TCD). It is a continuum mechanics approach, similar to linear elastic fracture mechanics (LEFM), but of more general applicability. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2407 / 2416
页数：10
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