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Influence of rake angle on surface integrity and fatigue performance of machined surfaces
- Authors
- Choi, Youngsik
- Issue Date
- Jan-2017
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Fatigue life; Residual stress; Micro-hardness; Crack; Rake angle
- Citation
- INTERNATIONAL JOURNAL OF FATIGUE, v.94, pp 81 - 88
- Pages
- 8
- Journal Title
- INTERNATIONAL JOURNAL OF FATIGUE
- Volume
- 94
- Start Page
- 81
- End Page
- 88
- ISSN
- 0142-1123
1879-3452
- Abstract
- This study investigates the influence of the rake angle on the surface integrity and fatigue performance of hard machined surfaces. The results demonstrate that a higher rake angle induces more compressive residual stresses and a more softened layer. Changing the rake angle was found to increase the crack initiation life up to 104% and crack propagation life up to 256%. Consequently, changing the rake angle increased the fatigue life up to 224%. The fatigue tests demonstrated that the rake angle has a significant influence on the fatigue life and that the effect is further increased if the loading is reduced. (C) 2016 Elsevier Ltd. All rights reserved.
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