Residual Stress Effects in Fatigue PDF Download
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Author: J. F. Throop
Publisher: ASTM International
ISBN: 9780803107113
Category : Technology & Engineering
Languages : en
Pages : 252
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Book Description
Author: J. F. Throop
Publisher: ASTM International
ISBN: 9780803107113
Category : Technology & Engineering
Languages : en
Pages : 252
Get Book Here
Book Description
Author: JF. Throop
Publisher:
ISBN:
Category : Crack propagation
Languages : en
Pages : 4
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Book Description
In this paper it is reemphasized that the effect of residual stress in fatigue is analogous to but not the same as the mean stress effect from applied loads. By including a residual stress term in the stress intensity factor range of the fatigue crack propagation rate equation, one is permitted to include the residual stress in calculations of fatigue life estimates. Using crack shape factors calculated for given aspect ratios of surface flaws and integrating the fatigue crack growth rate da/dN, one obtains an equation for the applied stress-cycles to failure S-N curve that includes the residual stress effect on fatigue performance. In this process of calculation that fact that compressive residual stress has a much stronger influence on fatigue life than tensile residual stress is revealed, mainly because the former decreases the stress intensity factor range and increases the critical crack size while the latter only decreases the critical crack size. A numerical solution of an example illustrates an application of these concepts.
Author:
Publisher:
ISBN:
Category : Materials
Languages : en
Pages : 256
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Book Description
Author: Michael R. Mitchell
Publisher: ASTM International
ISBN: 0803144725
Category : Fracture mechanics
Languages : en
Pages : 164
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Book Description
"Eleven peer-reviewed papers, written by experts in their field, provide an understanding of residual stresses, fatigue crack growth, fatigue lifetime predictions, and their effect on structural integrity. Residual stresses can be present due to processing and manufacturing of materials and structures, so it is imperative to understand how and why they can influence the test data that we used in structural design methodologies. Residual stresses may also be intentionally engineered into structures in attempts to improve fatigue life, and it is equally important that designers understand how to account for these potential effects on fatigue life."--Publisher's website.
Author: Joseph F. Throop
Publisher:
ISBN:
Category :
Languages : en
Pages : 16
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Book Description
It is re-emphasized here that the effect of residual stress in fatigue is analogous to but not the same as the mean stress effect from applied loads. The inclusion of a residual stress term in the stress intensity factor range of the fatigue crack propagation rate equation permits one to use the residual stress in calculations of fatigue life estimates. Using crack shape factors calculated for given aspect ratios of surface flaws and integrating da/dN, one obtains an equation for the S-N curve which includes the residual stress effect on fatigue performance. This process of calculation reveals that compressive residual stress has a much stronger influence on fatigue life than tensile residual stress does, mainly because the former decreases the stress intensity factor range and increases the critical crack size while the latter only decreases the critical crack size. Numerical solution of an example illustrates an application of these concepts.
Author: Robert L. Champoux
Publisher: ASTM International
ISBN: 0803111959
Category : Fatigue strength (Engineering materials).
Languages : en
Pages : 141
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Book Description
Author: Anastasius Youtsos
Publisher: Springer Science & Business Media
ISBN: 1402053290
Category : Technology & Engineering
Languages : en
Pages : 229
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Book Description
The contents of this book have been grouped into three topic areas covering theoretical /numerical and experimental analyses of residual stress and its effects on fatigue and fracture. It details recent advances on its title topics by leading European experts and contains theoretical/numerical studies of high value backed by sound experimental data. It also provides experimental studies based on novel and verifiable testing methods.
Author: John H. Underwood
Publisher: ASTM International
ISBN: 0803124104
Category : Fracture mechanics
Languages : en
Pages : 697
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Book Description
Author: Kenneth L. Jerina
Publisher: ASTM International
ISBN: 0803126174
Category : Technology & Engineering
Languages : en
Pages : 480
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Book Description
Author: D. P. Kendall
Publisher:
ISBN:
Category :
Languages : en
Pages : 33
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Book Description
A method is proposed for predicting the fatigue life of thick-walled cylinders based on numerical integration of the fatigue crack growth curve as determined from a fracture mechanics analysis. The effects of autofrettage residual stresses, crack shape, and of the compressive portion of the stress intensity factor are accounted for. A method for correcting the autofrettage residual stresses for the Bauschinger Effect, based on recent analytical results by Peter Chen, is also included. A simple computer program for performing the calculation of fatigue life is presented along with a comparison of the calculated results with the experimental results of Davidson, and of Throop and Fujczak.
