Semi-elliptical shear-mode fatigue cracks were promoted in the axial direction of round specimens of SAE52100 bearing steel by fully-reversed cyclic torsion tests under a static axial compressive stress. Non-propagating cracks smaller than 1 mm were obtained in two ways; (i) stress amplitude decreasing tests of notched specimens, or (ii) constant stress amplitude tests of smooth specimens. The threshold stress intensity factor ranges, ΔKIIth and ΔIIIth, showed a crack size dependency.
|ジャーナル||Key Engineering Materials|
|出版ステータス||出版済み - 2008|
!!!All Science Journal Classification (ASJC) codes