scholarly journals Stress Ratio Effects on Crack Opening Loads and Crack Growth Rates in Aluminum Alloy 2024

2009 ◽  
pp. 407-407-19 ◽  
Author(s):  
WT Riddell ◽  
RS Piascik
Keyword(s):  
Aluminum Alloy ◽  
Crack Growth ◽  
Growth Rates ◽  
Stress Ratio ◽  
Crack Opening ◽  
Aluminum Alloy 2024 ◽  
Crack Growth Rates

Analysis on Fatigue Crack Growth Rates Under a Wide Range of Stress Ratios

1986 ◽  
Vol 108 (2) ◽  
pp. 209-213 ◽  
Author(s):  
M. Kurihara ◽  
A. Katoh ◽  
M. Kawahara
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Growth Rates ◽  
Stress Ratio ◽  
Crack Opening ◽  
Wide Range ◽  
Stress Ratios ◽  
Crack Opening Stress ◽  
Crack Growth Rates

In the present study, a series of fatigue crack growth tests were carried out in order to examine the effects of stress ratio R upon crack growth rates, together with the crack closure behaviors. Fatigue tests were conducted with center-notched specimens of two kinds of pressure vessel steels (500 MPa class and 800 MPa class) under cyclic axial loading in various stress ratios R ranging from −5 to +0.8. Crack opening stress levels were determined by the unloading elastic compliance method. An expression of fatigue crack growth rates under a wide range of stress ratios was proposed, taking into account the relationship between stress ratio R and crack opening stress ratio U. The crack growth behaviors near the threshold conditions were also discussed.

On the relation between micro- and macroscopic fatigue crack growth rates in aluminum alloy AMS 7475-T7351

2007 ◽  
Vol 142 (3-4) ◽  
pp. 233-240 ◽  
Author(s):  
C. O. F. T. Ruckert ◽  
J. R. Tarpani ◽  
W. W. Bose Filho ◽  
Dirceu Spinelli
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Growth Rates ◽  
Crack Growth Rates

scholarly journals Fatigue crack growth rates of 10CrNi3MoV steel welded joints considering the stress ratio

2021 ◽  
Vol 33 ◽  
pp. 802-808
Author(s):  
Wei Song ◽  
Jingjing Li ◽  
Xuesong Liu ◽  
Ping Wang ◽  
Di Wan ◽  
...  
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Growth Rates ◽  
Welded Joints ◽  
Stress Ratio ◽  
Crack Growth Rates

A New Model for Predicting Small Crack Growth Rates

2004 ◽  
Vol 471-472 ◽  
pp. 330-334 ◽  
Author(s):  
Hong Cai Zhang ◽  
K.Z. Huang ◽  
J.H. Cheng
Keyword(s):  
Crack Growth ◽  
Growth Rates ◽  
Stress Ratio ◽  
Characteristic Parameter ◽  
Small Crack ◽  
Constant Amplitude ◽  
New Model ◽  
Small Crack Growth ◽  
Crack Growth Rates ◽  
Barrier Characteristic

A new model for predicting the small-crack growth rates is proposed under the constant amplitude loading. With the use of two important parameters, the transition crack length a0 and the barrier characteristic parameter d*, the new model can reflect the abnormal feature of small-crack growth. The effect of crack closure is considered in the model as well. The model is shown to provide a better correlation to the experimental results for the Ti-6Al-4V alloy under various stress levels at a stress ratio of R = 0.4.

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