F405 Fatigue crack initiation life prediction of rails using theory of critical distance and critical plane approach

2011 ◽  
Vol 2011.24 (0) ◽  
pp. _F-54_-_F-57_
Author(s):  
Makoto AKAMA ◽  
Hiroyuki MATSUDA ◽  
Hisayo DOI ◽  
Masahiro TSUJIE
Keyword(s):  
Fatigue Crack ◽  
Crack Initiation ◽  
Life Prediction ◽  
Fatigue Crack Initiation ◽  
Critical Distance ◽  
Critical Plane ◽  
Critical Plane Approach ◽  
Crack Initiation Life

Assessment of Degrees of Cumulative Fatigue Crack Initiation Damage at Guyed Mast Earplate Joint

2011 ◽  
Vol 467-469 ◽  
pp. 776-781
Author(s):  
Wen Li Wang ◽  
Wei Lian Qu ◽  
Jie He
Keyword(s):  
Residual Stress ◽  
Fatigue Crack ◽  
Crack Initiation ◽  
Fatigue Crack Initiation ◽  
Welding Residual Stress ◽  
Critical Plane ◽  
Multi Scale ◽  
Cumulative Strain ◽  
Critical Plane Approach ◽  
Guyed Mast

This paper proposes a new method for assessing the degree of the cumulative fatigue crack initiation damage of the joint welds at the guyed mast earplate. Based on the multi-scale wind-induced stress analysis of the guyed mast earplate joint, and considering the welding residual stress in earplate joint, the critical plane approach is used for the calculation of cumulative strain fatigue damage due to the combined actions of the welding residual stress and the wind load.

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