表面ロール加工を施した黄銅およびジュラルミンの疲れ限度

概要

論文の詳細を見る
The effects of surface rolling on the fatigue strength were investigated with the grooved specimens made of brass and duralmin. The bottoms of grooves were rolled with varying pressures by a roller which has a thickness half the width of groove. In the reversed twisting fatigue tests, fatigue strength (10^7 reversals) was improved 81% in brass, or 43% in duralmin by the most suitable rolling pressure. With the brass specimen, the effect of surface rolling on the improvement of fatigue strength (10^7 reversals) was far better than with mild steel. Even in the case of the highest improvement rate of fatigue strength (10^7 reversal) in the brass specimen, hair cracks due to rolling were found on the rolled surface under microscope.
一般社団法人日本機械学会の論文
1956-10-25