Assessment Technology of Fatigue Crack Initiation Life of Weld Structures

2017 ◽  
Vol 86 (1) ◽  
pp. 56-58
Author(s):  
Seiichiro TSUTSUMI ◽  
Fincato RICCARDO ◽  
Mitsuru OHATA ◽  
Tomokazu SANO
Keyword(s):  
Fatigue Crack ◽  
Crack Initiation ◽  
Fatigue Crack Initiation ◽  
Assessment Technology ◽  
Crack Initiation Life

The Variational Principles of Coupled Systems in Fatigue Problem Undergoing Large Range Damage

2016 ◽  
Vol 835 ◽  
pp. 514-520
Author(s):  
Wen Feng Tan
Keyword(s):  
Fatigue Crack ◽  
Crack Initiation ◽  
Potential Energy ◽  
Large Range ◽  
Fatigue Crack Initiation ◽  
Form Solution ◽  
Coupled Systems ◽  
Energy Principle ◽  
Potential Energy Principle ◽  
Crack Initiation Life

The coupled systems of fatigue crack initiation problem undergoing large range damage is defined. The zero different work principle, coupled potential energy principle, coupled complementary energy principle in the coupled system is established. By using of coupled potential energy principle, Closed form solution about predicting fatigue crack initiation life of three-dimensional component which leads to large range damage is derived. Compared with reference [1], the close form solution derived from this some. It is proved that the method is correct. The method adopted in this paper is definite in mechanical concept,it can be widely used in analysis of predicting fatigue crack initiation life of various component which leads to large range damage.

Theoretical Estimation of Fatigue Crack Initiation Life for Metallic Materials

2012 ◽  
Vol 22 (3) ◽  
pp. 655-663 ◽  
Author(s):  
Chunwang Li ◽  
Qiang Sun ◽  
Youshe Yang ◽  
Jing Li ◽  
Guibin Zhang ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Crack Initiation ◽  
Fatigue Crack Initiation ◽  
Metallic Materials ◽  
Theoretical Estimation ◽  
Crack Initiation Life
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