Effects of Manual Shot Peening Conditions on High Cycle Fatigue

摘要

In the manual peening operation, the control of intensity and cover?age is of vital importance to maintain quality assurance. This experi?mental investigation provides information to establish an optimal manual shot peening condition and develop a relationship between the fatigue life and peening process parameters such as coverage, saturation and intensity. Observations showed that the peening process is strongly dependent on the control of peening conditions in manual operation. The results of this work show that with proper controls, manual shot peening can be used to produce an optimum balance between surface hardening and surface roughness. Based on the results, the investigation evaluates the fatigue performance of manually peened 7050-T7451 aluminum alloy under high cycle loading.