ショットピーニング加工面の残留応力 : 被加工材の寸法による変化

概要

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Several experiments were run to study the influences of work size on the residual stress induced by shot peening. Shot peening was performed for steel (O.45%C) and influences were discussed on the surface residual stress, arc height and half width. The results are as follows : (1) Residual stress on the peened surface shows the size effect for the work thickness, and the critical thickness is 5 times to the depth of work hardened layer produced by shot peening for annealed steel. (2) The size of specimen does not affect on the surface residual stress for the square form. (3) The surface residual stress shows anisotropy for the rectangular specimen and the value on the longitudinal is lower than that on the latitudinal. (4) The more the kinetic energy of a shot, the more the anisotropy. (5) The maximum difference from anisotropy of surface residual stress was 77% and 88 MPa in this experiment.
公益社団法人精密工学会の論文
1988-01-05