Abstract
The review work aims to examine the fatigue strength, wear-resistance, and surface roughness of the materials after shot peening and three-dimensional numerical modelling are used to predict the behavior of the material in severe conditions. Basic parameters used for fatigue life estimation are shot size, peening intensity, the number of shots, shot velocity, and coverage. Shot peening is mainly a cold working process, but water cavitation peening and laser shock peening are also popular for different applications. Each shot acts like a peen hammer and produces a residual compressive stress zone on the surface. The effect of temperature has been studied on residual compressive stress distribution on the surface as plastic deformation increases with temperature. The process of shot peening is performed in the camshaft, crankshaft, clutch springs, gear wheels, and connecting rods to increase their fatigue life. Higher strain rates resulting from the shot peening move the dislocations toward the grain boundaries to strengthen the material.
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