Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Effects of Re-Peening on the Fatigue Damaged SM45C Steel

피로손상을 받은 SM45C강에 대한 재피닝의 효과

  • Published : 2002.08.01
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Abstract

The effects of re-peening on the fatigue damaged material are studied in this paper. The effects of re-peening process on surface hardness, surface roughness, surface compressive residual stress, and fatigue life are investigated. The results can be summarized in brief as follows: The depth of hardening layer was increased by re-peening process. There is no large variation of the surface roughness by re-peening process. The compressive residual stress of shot-peened specimen decreases under the fatigue loading and then increases again by re-peening process. Re-peening process increases the fatigue lifo of shot-peened and fatigue damaged specimen. The increase of fatigue lift under high stress level is much higher than under low stress level.

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References

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