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Effects of altering surface integrity by electrolytic etching on fatigue performance in rolling contact
- Authors
- Choi, Youngsik
- Issue Date
- Nov-2014
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Surface integrity; Fatigue test; Fatigue parameters; Electrolytic etching; Layer removal
- Citation
- INTERNATIONAL JOURNAL OF FATIGUE, v.68, pp 269 - 276
- Pages
- 8
- Journal Title
- INTERNATIONAL JOURNAL OF FATIGUE
- Volume
- 68
- Start Page
- 269
- End Page
- 276
- ISSN
- 0142-1123
1879-3452
- Abstract
- A methodology is presented for altering the surface integrity of a machined surface using electrolytic etching. Fatigue parameters are computed to investigate the impact of surface layer removal by electrolytic etching. Generally, surface layer removal reduces crack initiation life. However, it reduces crack propagation life for specimens machined by new tools, while increasing it for specimens machined by worn tools. Consequently, surface layer removal reduces fatigue life when a new tool is used, and increases it when a worn tool is used. Rolling contact fatigue tests substantiate that the fatigue performance of machined surfaces can be significantly enhanced by removing an optimal thickness of the surface layer. (C) 2014 Elsevier Ltd. All rights reserved.
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