Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)
- Volume 6 Issue 2
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- Pages.34-40
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- 2007
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- 1598-6721(pISSN)
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- 2288-0771(eISSN)
The Effect of Compressive Residual Stress on Computer Corrosion Fatigue Crack of SAE 5155
SAE 5155강의 컴퓨터부식피로 균열에 미치는 압축잔류응력의 영향
- Published : 2007.06.30
Abstract
Antifatigue failure technology take an important part of current industries. Currently, the shot peening is used for removing the defect from the surface of steel and improving the fatigue strength on surface. Therefore, this paper the effect of compressive residual stress and corrosion of spring steel(SAE 5155)by shot-peening on fatigue crack growth characteristics in stress ratio(R=0.05)was investigated with considering fracture mechanics. By using the methods mentioned above, We arrived at the following conclusions. The fatigue crack growth rate(da/dN) of the shot-peening material was lower than that of the un-peening material. And in stage I,
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