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최적 피닝강도 탐색을 통한 자동차용 기어강재의 피로특성에 관한 연구
남지헌(Jihun Nam),김태형(Taehyung Kim),이국진(Kookjin Lee),이동선(Dongsun Lee),정성균(Seongkyun Cheong) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this paper, the optimum peening intensity (Almen intensity) condition is investigated by experiment. Rotary bending fatigue test has been adopted to investigate the effects of optimum peening condition on the fatigue characteristics. TheSCM420H steel was used to investigate shot peening effects. The fatigue life at σa=95O and σa= 1,050MPa first gently increases, then drops gently as peening intensity increases compared with unpeened specimen. Experimental results shlow that the optimum peening intensity range is 0.325~0.381 mmA. So the fatigue strength and fatigue life have been tremendously increased by optimum-peening treatment. However, the fatigue strength and fatigue life have been decreased by over peeing.