Side Effects of Shot Peening on Fatigue Crack Initiation Life
Publish Year: 1390
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJE-24-7_006
تاریخ نمایه سازی: 17 بهمن 1400
Abstract:
Shot peening beneficial effects on fatigue life of mechanical components are well known. However, there are some reports in the literature that indicate inappropriate shot peening parameters tend to reduce the fatigue life. It is therefore, the purpose of this study to find a logical quantitative justification for these observations. Using finite element method, a dynamic elastic-plastic simulation of shot peening was presented. Effect of shot velocity and size on surface morphology after shot peening were examined. Fatigue crack initiation life calculation of shot peened specimens revealed that beneficial effect of shot peening significantly vanishes in the case of high velocities and bigger shots.
Keywords:
Shot Peening , Finite element method , Surface roughness , Stress Concentration , Fatigue Crack Initiation Life
Authors
S.M. H-Gangaraj
Mech Eng, Sharif Univ. of Technology
G. H. Farrahi
School of Mechanical Engineering, Sharif University of Technology