Modeling of coalescence of dispersed surface cracks. Part 1. Probabilistic model for crack coalescence

被引：0

作者：

Ignatovich S.R. ^{[1
]}

Kucher A.G. ^{[1
]}

Yakushenko A.S. ^{[1
]}

Bashta A.V. ^{[1
]}

机构：

[1] National Aviation University, Kiev

来源：

Strength of Materials | 2004年 / 36卷 / 2期

关键词：

coalescence of cracks; dispersed cracks; prediction; probabilistic model;

D O I：

10.1023/B:STOM.0000028302.80199.da

中图分类号：

学科分类号：

摘要：

A probabilistic model was developed for coalescence of cracks randomly dispersed on the surface and having uniform orientation and statistically nonuniform length. The model makes it possible to calculate the probability of coalescence of any pair of closely located cracks with allowance for the interaction of the strain fields. The model has been modified for the case of coalescence of cracks having the biggest length in the sample. The initial parameters for determining the probability of coalescence are: mathematical expectation of the length of cracks, their surface density, the magnitude of the damaged area of the material (size-scale factor), and the level of the acting stress. The model obtained can be used to predict the life of a component from the criterion of formation of critical cracks by coalescence of dispersed defects. © 2004 Plenum Publishing Corporation.

引用

页码：125 / 133

页数：8

共 22 条

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