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Assessment of the Impact of Shot-Peening on the Fatigue Life of a Compressor Blade Subjected to Resonance Vibrations

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This publication presents an assessment of the influence of a surface treatment such as shot-peening on the fatigue life of a compressor blade exposed to resonant vibrations. As part of the work, a geometric model of the blade was developed, and a numerical modal and fatigue analysis were performed. The fatigue analysis was based on the Manson–Coffin–Basquin and Ramberg–Osgood models. Additionally, the location of the highest equivalent stresses was established. Based on the results of the strength analysis, two points were identified where a fatigue crack may potentially occur. As part of the work, the influence of different values of residual stresses on the results of the fatigue life was determined. The obtained results were compared to the literature values of fatigue life for this blade. A secondary objective of the study was to determine the size of the grains at various points of the blade, as well as the thickness of the layer plasticized as a result of peening. The relationship between the location of the highest values of the equivalent stresses and the thickness of the plasticized layer was determined. An explanation of the effect of shot-peening on the increase in the fatigue life of the blade was proposed.

Contributor(s)
Publisher
MDPI AG
Date Issued
2020-12-15
Language
English
Type
Genre
Form
electronic document
Media type
Creator role
Faculty
Identifier
1996-1944
Subject (LCSH)
Has this item been published elsewhere?
Volume
13
Volume
24
Bednarz, . A., & Misiolek, . W. Z. (2020). (Vols. 24). https://doi.org/10.3390/ma13245726
Bednarz, Arkadiusz, and Wojciech Z. Misiolek. 2020. https://doi.org/10.3390/ma13245726.
Bednarz, Arkadiusz, and Wojciech Z. Misiolek. 15 Dec. 2020, https://doi.org/10.3390/ma13245726.