STATISTICAL-ANALYSIS OF THE SURFACE FATIGUE-CRACK GROWTH IN WELDED-JOINTS

被引:19
|
作者
ZHANG, YH [1 ]
WANG, LJ [1 ]
机构
[1] TIANJIN UNIV,DEPT MECH ENGN,TIANJIN 300072,PEOPLES R CHINA
关键词
D O I
10.1016/0013-7944(93)90153-J
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
A method of analysis based on probabilistic theory is presented for statistical modeling of the surface fatigue crack growth (SFCG) at the weld toe. A procedure to estimate parameters in the model is illustrated, using the experimental data of the SFCG at the weld toe obtained from a replicate test program of A 1 31 steel butt joint specimens under constant amplitude loadings. The statistical nature of the SFCG at the weld toe is investigated. The limiting state of the surface fatigue crack growth at the weld toe is constructed, and the residual life distribution function for the SFCG at the weld toe is derived.
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页码:1031 / 1035
页数:5
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