A simplified and fast method to predict plain and notch fatigue of shot peened high-strength aluminium alloys under reverse bending

► We study plain and notch reverse bending fatigue strength of shot peened Al alloys. ► We use an analytical model able to predict surface residual stress relaxation. ► The initial residual stress field near notches is roughly estimated. ► The surface stabilized residual stress is used to predict plain and notch fatigue. ► We use the critical distance theory to account for the notch sensitivity.