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Quantitative fracture mechanics approach to fatigue life improvement by shot peening applications

Stress intensity factor has been a favorite tool in fracture mechanics due to its simplicity. Here, it is used to study the influence of the shot peening application in fatigue life improvement. Using a CT-specimen, the study of shot peening effect on fatigue life was performed. Here, the compressiv...

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Main Authors: Prawoto, Yunan, Ahmad, Zaini, Suhartono, H. Agus
Format: Article
Published: Vibgyor Epress 2020
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/87315/
http://dx.doi.org/10.35840/2631-5076/9254
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spelling my.utm.873152020-10-31T12:29:43Z http://eprints.utm.my/id/eprint/87315/ Quantitative fracture mechanics approach to fatigue life improvement by shot peening applications Prawoto, Yunan Ahmad, Zaini Suhartono, H. Agus TJ Mechanical engineering and machinery Stress intensity factor has been a favorite tool in fracture mechanics due to its simplicity. Here, it is used to study the influence of the shot peening application in fatigue life improvement. Using a CT-specimen, the study of shot peening effect on fatigue life was performed. Here, the compressive residual stress is converted into residual stress intensity factor, Kres.. Together with the applied stress intensity factor, Kapl., the superposition principle can be used. The result of the investigation clarifies quantitatively what has been widely believed that one of the easiest ways to improve fatigue life is by perfecting the surface via shot peening. Compressive stresses are beneficial not only in postponing fatigue crack initiation but also in preventing the crack propagation, which lead to increasing fatigue strength. Vibgyor Epress 2020-06 Article PeerReviewed Prawoto, Yunan and Ahmad, Zaini and Suhartono, H. Agus (2020) Quantitative fracture mechanics approach to fatigue life improvement by shot peening applications. International Journal of Metallurgy and Metal Physics, 5 (2). pp. 1-11. ISSN 2631-5076 http://dx.doi.org/10.35840/2631-5076/9254 DOI:10.35840/2631-5076/9254
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Prawoto, Yunan
Ahmad, Zaini
Suhartono, H. Agus
Quantitative fracture mechanics approach to fatigue life improvement by shot peening applications
description Stress intensity factor has been a favorite tool in fracture mechanics due to its simplicity. Here, it is used to study the influence of the shot peening application in fatigue life improvement. Using a CT-specimen, the study of shot peening effect on fatigue life was performed. Here, the compressive residual stress is converted into residual stress intensity factor, Kres.. Together with the applied stress intensity factor, Kapl., the superposition principle can be used. The result of the investigation clarifies quantitatively what has been widely believed that one of the easiest ways to improve fatigue life is by perfecting the surface via shot peening. Compressive stresses are beneficial not only in postponing fatigue crack initiation but also in preventing the crack propagation, which lead to increasing fatigue strength.
format Article
author Prawoto, Yunan
Ahmad, Zaini
Suhartono, H. Agus
author_facet Prawoto, Yunan
Ahmad, Zaini
Suhartono, H. Agus
author_sort Prawoto, Yunan
title Quantitative fracture mechanics approach to fatigue life improvement by shot peening applications
title_short Quantitative fracture mechanics approach to fatigue life improvement by shot peening applications
title_full Quantitative fracture mechanics approach to fatigue life improvement by shot peening applications
title_fullStr Quantitative fracture mechanics approach to fatigue life improvement by shot peening applications
title_full_unstemmed Quantitative fracture mechanics approach to fatigue life improvement by shot peening applications
title_sort quantitative fracture mechanics approach to fatigue life improvement by shot peening applications
publisher Vibgyor Epress
publishDate 2020
url http://eprints.utm.my/id/eprint/87315/
http://dx.doi.org/10.35840/2631-5076/9254
_version_ 1683230720077594624
score 13.244745

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