2401 はりの固有振動数による表面改質層の縦弾性係数の評価(G03-5 表面改質処理,G03 材料力学)

概要

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Peening is the technique of surface modification to improve fatigue strength of metallic materials. Cavitation shotless peening (CSP) is the peening method using cavitation impact and does not required shots. Young's Modulus of surface improvement layer might be changed by peening. Young's modulus is one of the main mechanical properties of materials and shows material structure. In the present paper, the evaluation method of Young's modulus of the surface improvement layer was proposed. Both sides of cantilever were peened by CSP changing with peening time, and the natural frequency of this cantilever was measured, and then, Young's modulus was evaluated. We revealed that Young's modulus of the cantilevers peened by CSP was changed.
社団法人日本機械学会の論文
2007-09-07