Optimal shot peening residual stress profile for fatigue

Shot peening (SP) is frequently used as a palliative measure against metal fatigue in many engineering components. The performance of this surface treatment depends on different factors including the material, shape and loading conditions component, well process parameters. Fatigue improvement due to SP great extent upon in-depth compressive residual stress profile produced specimen. In work, we study optimum for terms behaviour. For task, assume that qualitatively similar by metals. Based generic profile, analyse two simple, but noteworthy, cases: plain notch fatigue. analysis conducted “fatigue damage tolerance design” framework, which certain initial defect assumed be present component under study.