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
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Official URL: http://dx.doi.org/10.35840/2631-5076/9254
Abstract
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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | shot peening, stress intensity factor, residual stress, fatigue life |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Mechanical Engineering |
| ID Code: | 87315 |
| Deposited By: | Yanti Mohd Shah |
| Deposited On: | 31 Oct 2020 12:29 |
| Last Modified: | 31 Oct 2020 12:29 |
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