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The Effect of Compressive Residual Stress on The Fatigue life in Spring Steel for vehicles  

박경동 (부경대학교 기계공학부)
하경준 (부경대학교 기계공학부)
박형동 (부경대학교 기계공학부)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.27, no.1, 2003 , pp. 82-90 More about this Journal
Abstract
Nowadays, many components used in machinery industry is required lightness and high strength. The shot-peening method is used in order to improve the fatigue life of spring steel(JIS G SUP-9) which is used in suspension of automobile. The compressive residual is induced in this shot-peening process. This paper investigated the effect of the residual compressive stress on the fatigue crack growth characteristics. Main results are summarized as follows. 1. The fatigue crack growth rate on stage II is conspicuous with the level of compressive residual stress and is dependent on Paris equation. 2. Although the maximum compressive residual stress is deeply and widely formed from surface, it does not improve the fatigue life comparing when maximum compressive residual stress is formed in surface. 3. The threshold stress intensity factor range is increased with increasing compressive residual stress. 4. In fracture surface of fatigue crack growth it is investigated that compressive residual stress remarkably retards fatigue crack growth.
Keywords
Spring Steel; Shot-peening; Over Shot-peening; Compressive Residual Stress; Fatigue Crack Propagation; Striation;
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  • Reference
1 A Crack Growth Retardation Model Using and Effective Stress Concept /
[ Willenborg, J.;Engle, R. M.;Wood, H. A. ] / AFFDL-TM-71-1-FBR
2 /
[ 정성균;이승호 ] / 쇼트피닝 가공개론
3 Relation Between Shot-peening Residual Stress Distribution and Fatigue Crack Propagation Life in Spring Steel /
[ Tange, A.;Takamura, N. ] / Proc. of the 4th International Conference on Shot Peening
4 Its Effect on Process Consistency and Resultant Improvement in Fatigue Characteristics /
[ Gillespie, R, D. ] / Proc. of the 5th International Conference on Shot Peening
5 Influence of Shot Peening on Material Properties of Turbine Blades /
[ Verpoort, C. M.;Gerdes, C. ] / Shot Peening Theory and Application, Institute for Industrial Technology Transfer International
6 /
[ 정동일;정경섭;한민구 ] / 파괴역학
7 /
[ 村上;大南 ] / 破壞力學 入門
8 The Influence of Peening Conditions on the Resulting Distribution of Residual Stress /
[ Wohlfahrt, H. ] / Proc. of the 2nd International Conference on Shot Peening