| HE Shao-jie,YANG Wen-yu,GUO Bu-peng,ZHOU Rui-hu.Research Progress on Evaluation of Surface Residual Stress and Fatigue Life of Machined Products[J],44(6):120-126,132 |
| Research Progress on Evaluation of Surface Residual Stress and Fatigue Life of Machined Products |
| Received:March 16, 2015 Revised:June 20, 2015 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2015.06.023 |
| KeyWord:reliability machining surface integrity residual stress fatigue life detection formation mechanism |
| Author | Institution |
| HE Shao-jie |
State Key Laboratory of Digital Manufacturing Equipment and Technology,Huazhong University of Science and Technology, Wuhan , China |
| YANG Wen-yu |
State Key Laboratory of Digital Manufacturing Equipment and Technology,Huazhong University of Science and Technology, Wuhan , China |
| GUO Bu-peng |
State Key Laboratory of Digital Manufacturing Equipment and Technology,Huazhong University of Science and Technology, Wuhan , China |
| ZHOU Rui-hu |
State Key Laboratory of Digital Manufacturing Equipment and Technology,Huazhong University of Science and Technology, Wuhan , China |
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| Abstract: |
| With the rapid development of aerospace engineering, nuclear power industry, marine engineering equipment and motor industry, especially the implementation of the national aerospace and marine strategy, the requirements are stricter on the reliability and service life of components in the complex service environment such as high corrosion and high alternating load. As an important evaluation criterion of component performance, surface integrity in machining has drawn more and more attention. Surface residual stress, as a major parameter of surface integrity, is closely related to fatigue life and functional performance of manufactured components. Therefore, it is necessary to investigate the formation mechanism of surface residual stress in machining. This paper introduced the definition of residual stress and its effects on material performance, compared the advantages and disadvantages of the neutron diffraction method and the X-ray diffraction method for residual stress determination, summarized the formation mechanism of surface residual stress in machining by experimental, predictive and FEM methods, analyzed effects of cutting parameters, tool geometry and material property on surface residual stress. The interrelationship between residual stress and fatigue life was summarized. Finally, the problems were explored in the formation mechanism of surface residual stress in machining and fatigue life evaluation. |
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