When shot-peening does not enhance fatigue life of leaf springs
by M.L. Aggarwal, R.A. Khan, R.K. Garg
International Journal of Surface Science and Engineering (IJSURFSE), Vol. 2, No. 3/4, 2008

Abstract: Fatigue life of shot-peened components and assemblies is found to be lower than expected owing to various reasons. In this paper, the fatigue strength of EN45A spring steel shot-peened samples has been evaluated experimentally at various shot-peening conditions. A wide difference was noticed in the fatigue testing results of leaf springs and sample data. Various contributing causes were analysed and the extent in improvement of fatigue life of shot-peened leaf springs has been discussed. The paper discusses circumstances when the shot-peening does not improve fatigue and fretting fatigue resistance of mating components.

Online publication date: Sat, 27-Sep-2008

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