2011 Fiscal Year Final Research Report
Creation of high fatigue strength material using high hardness layer and development of the prediction method of its fatigue life
| Project/Area Number |
22860066
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Ritsumeikan University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2011
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| Keywords | 疲労 / 表面処理 / ギガサイクル疲労 |
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| Research Abstract |
The purpose of this study is to propose a new surface coating method and investigate its formation mechanism, and to investigate the effect of surface hardened layer on the very high cycle fatigue properties of metallic materials. As results of fatigue tests, the fatigue strength of surface hardened material changed depending on the surface layer. This was because the fatigue fracture mode changed depending on the mechanical property and thickness of the surface layer. The fatigue fracture mechanism was clarified from view points of the local bending stress distribution applied to the surface hardened material.
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