Strain distribution around a stress corrosion crack tip

1985 ◽  
Vol 20 (1) ◽  
pp. 23-27 ◽  
Author(s):  
P. S. Patel ◽  
R. A. Jarman
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Crack ◽  
Strain Distribution ◽  
Crack Tip

Predicting Stress Corrosion Crack Tip Electrochemical Conditions and the Influence of Exposure Environment

2021 ◽  
Vol MA2021-02 (9) ◽  
pp. 555-555
Author(s):  
Ryan Michael Katona ◽  
Rebecca Skelton ◽  
Carolina Vicente Moraes ◽  
Zachary Harris ◽  
James Burns ◽  
...  
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Crack ◽  
Crack Tip

Simulation of Residual Stress Effect on Stress Corrosion Crack Growth in Gas Pipelines

2008 ◽  
Author(s):  
M. R. Fourozan ◽  
M. Olfatnia ◽  
S. J. Golestaneh
Keyword(s):  
Residual Stress ◽  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Stress Corrosion ◽  
Stress Corrosion Crack ◽  
Crack Growth ◽  
Crack Tip ◽  
Gas Pipelines ◽  
Stress Corrosion Crack Growth

In this paper, a quantitative study on stress corrosion crack growth in large diameter gas pipelines is presented. Finite element method is applied for determining stress intensity factor at the crack tip. First a small semi-elliptical axial surface crack is assumed. Then internal gas pressure and residual stress, induced from welding process, are considered. Applied forces and crack growth rate are calculated as a function of stress intensity factor based on an empirical equation. Crack front shape is determined by calculating stress intensity factor distributions along the crack tip. As a result, the effect of residual stress on stress intensity factor and therefore crack growth is determined. In addition, minimum crack size that activates the stress corrosion cracking mechanism is determined. It is shown that the applied method could be used to estimate the reliable life of pipeline and the suitable time for inspection of the pipeline’s surface.

scholarly journals Effect of Local Strain Distribution of Cold-Rolled Alloy 690 on Primary Water Stress Corrosion Crack Growth Behavior

2017 ◽  
Vol 62 (2) ◽  
pp. 1243-1248 ◽  
Author(s):  
S.-W. Kim ◽  
T.-Y. Ahn ◽  
Y.-S. Lim ◽  
S.-S. Hwang
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Crack ◽  
Crack Growth ◽  
Strain Distribution ◽  
Local Strain ◽  
Growth Behavior ◽  
Crack Growth Behavior ◽  
Intergranular Cracking ◽  
Alloy 690 ◽  
Cold Rolled

Abstract This work aims to study the stress corrosion crack growth behavior of cold-rolled Alloy 690 in the primary water of a pressurized water reactor. Compared with Alloy 600, which shows typical intergranular cracking along high angle grain boundaries, the cold-rolled Alloy 690, with its heterogeneous microstructure, revealed an abnormal crack growth behavior in mixed mode, that is, in transgranular cracking near a banded region, and in intergranular cracking in a matrix region. From local strain distribution analysis based on local mis-orientation, measured along the crack path using the electron back scattered diffraction method, it was suggested that the abnormal behavior was attributable to a heterogeneity of local strain distribution. In the cold-rolled Alloy 690, the stress corrosion crack grew through a highly strained area formed by a prior cold-rolling process in a direction perpendicular to the maximum principal stress applied during a subsequent stress corrosion cracking test.

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