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 ste...
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.