A Fatigue Crack Growth Model With Mean Stress Effects
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A Fatigue Crack Growth Model With Mean Stress Effects
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Author :
language : en
Publisher:
Release Date : 1997
A Fatigue Crack Growth Model With Mean Stress Effects written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
A Fatigue Crack Growth Model With Mean Stress Effects
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Author : Carlos Henrique De Noronha Motta
language : en
Publisher:
Release Date : 1997
A Fatigue Crack Growth Model With Mean Stress Effects written by Carlos Henrique De Noronha Motta and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
Fatigue Crack Growth Thresholds Endurance Limits And Design
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Author : J. C. Newman
language : en
Publisher: ASTM International
Release Date : 2000
Fatigue Crack Growth Thresholds Endurance Limits And Design written by J. C. Newman and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Fatigue categories.
Annotation Contains 24 papers from the November, 1998 symposium of the same name, sponsored by the ASTM Committee E8 on Fatigue and Fracture, and presented by Newman and Piascik (both of the NASA Langley Research Center). The papers focus on such areas as fatigue-crack growth threshold mechanisms, loading and specimen-type effects, analyses of fatigue-crack-growth-threshold behavior, and applications of threshold concepts and endurance limits to aerospace and structural materials. Annotation copyrighted by Book News, Inc., Portland, OR.
The Combined Effects Of Mean Stress And Aggressive Environments On Fatigue Crack Growth
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Author : J. A. Kapp
language : en
Publisher:
Release Date : 1982
The Combined Effects Of Mean Stress And Aggressive Environments On Fatigue Crack Growth written by J. A. Kapp and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with categories.
Experiments have been performed to study the combined effects of aggressive environment and mean stress on fatigue crack growth. Since mean stress changes also change the stress ratio, R(R = sigma min/sigma max), experiments were performed to measure fatigue crack growth rates for various values of constant R. The experimental results were approximated mathematically using a modified superposition model. The results show that for negative values of R, the modified superposition model yields excellent agreement with the experiments. When R was positive, the mathematical model significantly overestimated the experimental results, suggesting that the full environmental effect condition cannot be achieved in the embrittling system chosen.
Fatigue Damage Crack Growth And Life Prediction
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Author : F. Ellyin
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Fatigue Damage Crack Growth And Life Prediction written by F. Ellyin and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
Fatigue failure is a multi-stage process. It begins with the initiation of cracks, and with continued cyclic loading the cracks propagate, finally leading to the rupture of a component or specimen. The demarcation between the above stages is not well-defined. Depending upon the scale of interest, the variation may span three orders of magnitude. For example, to a material scientist an initiated crack may be of the order of a micron, whereas for an engineer it can be of the order of a millimetre. It is not surprising therefore to see that investigation of the fatigue process has followed different paths depending upon the scale of phenomenon under investigation. Interest in the study of fatigue failure increased with the advent of industrial ization. Because of the urgent need to design against fatigue failure, early investiga tors focused on prototype testing and proposed failure criteria similar to design formulae. Thus, a methodology developed whereby the fatigue theories were proposed based on experimental observations, albeit at times with limited scope. This type of phenomenological approach progressed rapidly during the past four decades as closed-loop testing machines became available.
Methods And Models For Predicting Fatigue Crack Growth Under Random Loading
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Author : J. B. Chang
language : en
Publisher: ASTM International
Release Date : 1981
Methods And Models For Predicting Fatigue Crack Growth Under Random Loading written by J. B. Chang and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Technology & Engineering categories.
Residual Stress Effects In Fatigue
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Author : H. S. Reemsnyder
language : en
Publisher: ASTM International
Release Date : 1982
Residual Stress Effects In Fatigue written by H. S. Reemsnyder and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Materials categories.
Cyclic Stress Strain And Plastic Deformation Aspects Of Fatigue Crack Growth
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Author : L. F. Impellizzeri
language : en
Publisher: ASTM International
Release Date : 1977
Cyclic Stress Strain And Plastic Deformation Aspects Of Fatigue Crack Growth written by L. F. Impellizzeri and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Technology & Engineering categories.
A Model For Joining The Fatigue Crack Initiation And Propagation Analyses
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Author : Wen-Ching Chen
language : en
Publisher:
Release Date : 1980
A Model For Joining The Fatigue Crack Initiation And Propagation Analyses written by Wen-Ching Chen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Materials categories.
An analytical model for nonarbitrarily defining the crack initiation length of a notched member on the basis of the minimum total life estimate is proposed. This model provides an interpretation of fatigue notch size effect and a.
Effects Of Mean Load On Creep And Fatigue Crack Growth At Elevated Temperature
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Author : K-Y Hour
language : en
Publisher:
Release Date : 1994
Effects Of Mean Load On Creep And Fatigue Crack Growth At Elevated Temperature written by K-Y Hour and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Crack closure categories.
The effects of mean stress on crack growth behavior have been studied by performing various load ratio experiments at elevated temperature. It was found that at low load ratios a transgranular crack growth mode dominates whereas at high load ratios an intergranular crack growth mode was observed. The crack closure phenomenon was observed for experiments in which the transgranular crack growth mode was significant. In such cases, the crack opening stress was found to be constant for Stage II crack growth for each individual experiment at fixed load ratio, but varied with load ratio. Based on this, it was found that the crack growth rate correlated well with the effective stress intensity factor range, ?Keff. At R = 0.6 and above, crack closure effects were not observed and the linear rate line integral parameter, C*, based on elastic-plastic fracture mechanics, was found to correlate better crack growth rate because time-dependent processes were significant in those experiments. In the regime where both fatigue and creep mechanisms might interact, the linear cumulative rule, which combines the two parameters ?Keff and C*, accounting for fatigue and creep effects, respectively, was found to overestimate crack growth rates.