Effect of Single Overload/Underload Cycles on Fatigue Crack Propagation

2009 ◽  
pp. 41-41-20 ◽  
Author(s):  
WX Alzos ◽  
AC Skat ◽  
BM Hillberry
Keyword(s):  
Fatigue Crack ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Single Overload

Fatigue Crack Propagation Prediction under Single Overload Variable Loading

2013 ◽  
Vol 275-277 ◽  
pp. 215-219
Author(s):  
Zhi Fang Liu ◽  
Li Xiong Gu ◽  
Zhong Yong Xu
Keyword(s):  
Fatigue Crack ◽  
Fatigue Life ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
Variable Loading ◽  
Fatigue Crack Propagation Behavior ◽  
Propagation Behavior ◽  
Single Overload ◽  
Crack Growth Curve ◽  
Propagation Prediction

Reasonably predicting the fatigue life of specimens, depends on the research and understanding of the fatigue crack propagation behavior under variable amplitude loading (VAL) rather than under constant amplitude loading (CAL). The present study aims at evaluating residual fatigue life under single overload VAL by adopting a dynamical coefficient mechanics (DCM) model which we have reported. New formulas connecting the crack length with number of cycles and expressions for the fatigue crack propagation (FCP) under single overload VAL have been derived and were used to predict crack propagation. The ratios of predicted-to-experimental lives range from 1.00 to 1.09, which indicates that the results obtained from this DCM model are in good agreement with experimental data from published literatures and cover all stages of fatigue crack growth curve.

High Cycle Fatigue and Fatigue Crack Propagation Behaviors of Modified A7075-T73 Alloy

2014 ◽  
Vol 52 (4) ◽  
pp. 283-291 ◽  
Author(s):  
Gwan Yeong Kim ◽  
Kyu Sik Kim ◽  
Joong Cheol Park ◽  
Shae Kwang Kim ◽  
Young Ok Yoon ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Crack Propagation ◽  
Fatigue Crack Propagation ◽  
High Cycle Fatigue ◽  
Cycle Fatigue
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