Effects of rolled edges on the fatigue life of shot peened Inconel 718

Shot peening on part edges is a critical operation in aerospace manufacturing. Edges are plastically deformed by the shot peening media, which can create stress concentration features known as “rolled edges”. The detrimental impact of rolled edges on fatigue life has already been observed in the literature. However, the effects of the geometries of the unpeened edges on rolled edge formation and on the resulting fatigue life have never been...