タフトライド処理材の疲労強度
変動荷重の影響
1974 年 23 巻 252 号 p. 693-700
詳細
1974 年 23 巻 252 号 p. 693-700
Studies on fatigue strength under varying stress conditions are very important in the fields of fatigue research and machine design.
So, in the past many researchers have conducted a great deal of fatigue tests under varying stress, but there were few studies under varying stress on surface hardened steel.
This paper describes an experimental study on the fatigue strength under varying stress using tufftrided specimens of S10C and S15CK.
The main results are as follows:
(1) S10C tufftrided specimen gives approximately the relation Σ(n/N)≥1.0, but S15CK tufftrided specimen gives Σ(n/N)=0.2∼4.0 under high-low stress sequence tests.
(2) Both tufftrided specimens give Σ(n/N)≥1.0 under low-high and two level multiple repeated stress sequence tests.
