Stress-Intensity Factor Equations for Very Deep Corner Cracks at a Circular Hole in a Plate

2018 ◽  
Author(s):  
James C. Newman
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Circular Hole ◽  
Corner Cracks

scholarly journals Stress Intensity Factor Equations for the Evolution of Surface and Corner Cracks to Through Cracks

2019 ◽  
Vol 13 (48) ◽  
pp. 611-629
Author(s):  
Antonio Miranda ◽  
Rafael Marques ◽  
Marco Meggiolaro ◽  
Jaime Pinho de Castro
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Corner Cracks

Stress Intensity Factor for Corner Cracks of Pressurized Tees

1980 ◽  
Vol 102 (1) ◽  
pp. 121-123 ◽  
Author(s):  
M. A. Mohamed ◽  
J. Schroeder
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Stress Concentration ◽  
Intensity Factor ◽  
Local Stress ◽  
Numerical Techniques ◽  
Intensity Factors ◽  
Local Stress Concentration ◽  
Corner Cracks ◽  
Good Agreement

A method based on local stress concentration is employed to estimate stress intensity factors for corner cracks at the crotch corner of pressurized tees. The method yields results which are in good agreement with data obtained using other advanced numerical techniques.

Stress Intensity Factors for Reactor Vessel Nozzle Cracks

1978 ◽  
Vol 100 (2) ◽  
pp. 141-149 ◽  
Author(s):  
C. W. Smith ◽  
W. H. Peters ◽  
M. I. Jolles
Keyword(s):  
Stress Intensity Factor ◽  
Data Analysis ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Three Dimensional ◽  
Reactor Vessel ◽  
Intensity Factors ◽  
Independent Estimate ◽  
Self Similar ◽  
Corner Cracks

A method consisting of a marriage between frozen stress photoelasticity and a computerized least-squares data analysis for extracting stress intensity factor (SIF) distributions in three-dimensional cracked body problems is reviewed. Results from the application of the method to three programs dealing with nozzle corner cracks are discussed. The importance of using actual flaw shapes in analysis is stressed. It is concluded that the flaw growth in such problems is generally not self-similar due to the complexity and variety of boundary shapes. The experimental technique described appears to offer a viable independent estimate of SIF distributions for such problems.

Dynamic Stress Intensity Problem of SH-Wave by Double Linear Cracks near a Circular Hole

2008 ◽  
Vol 385-387 ◽  
pp. 105-108 ◽  
Author(s):  
Hong Liang Li ◽  
Hong Li ◽  
Yong Yang
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Green’S Function ◽  
Circular Hole ◽  
Green's Function ◽  
Dynamic Stress ◽  
Dynamic Stress Intensity Factor ◽  
Elastic Space ◽  
Sh Wave

In mechanical engineering, circular hole is used widely in structure design. When the structure is overloaded or the load is changed regularly, cracks emerge and spread. Based on the former study of dynamic stress concentration problem of SH wave by a crack originating at a circular hole edge, in this paper, the method of Green’s function is used to investigate the problem of dynamic stress intensity problem of double linear cracks near a circular hole impacted by incident SH-wave. The train of thought for this problem is that: Firstly, a Green’s function is constructed for the problem, which is a fundamental solution of displacement field for an elastic space possessing a circular hole and a linear crack while bearing out-of-plane harmonic line source force at any point; Secondly, in terms of the solution of SH-wave’s scattering by an elastic space with a circular hole and a linear crack, anti-plane stresses which are the same in quantity but opposite in direction to those mentioned before, are loaded at the region where the second crack is in existent actually, we called this process “crack-division”; Finally, the expressions of the dynamic stress intensity factor(DSIF) of the cracks are given when the circular hole and double linear crack exist at the same time. Then, by using the expressions, an example was provided to show the effect of circular hole and cracks on the dynamic stress intensity factor of the cracks.

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