Proposal of a Probabilistic Model on Rotating Bending Fatigue Property of a Bearing Steel in a Very High Cycle Regime
Proposal of a Probabilistic Model on Rotating Bending Fatigue Property of a Bearing Steel in a Very High Cycle Regime
复制标题
极高循环状态下轴承钢旋转弯曲疲劳性能概率模型的提出
DOI：
10.3390/app11072889
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
N. Oguma
中科院分区：
文献类型：
--
作者：
T. Sakai;A. Nakagawa;Yuki Nakamura;N. Oguma
在高强度钢的S-N图中，表面起始失效和内部夹杂物起始失效的双重S-N曲线通常在很高循环区域得到证实。由于截面上的应力分布，这种趋势在旋转弯曲的载荷类型中更为明显。在内部失效模式的情况下，通常在断裂表面上观察到鱼眼，并且在鱼眼中心处也观察到夹杂物。根据裂纹萌生部位夹杂物的位置和尺寸的分布特征，建立了内部失效模式下疲劳统计特性的概率模型。从而成功地解释了SUJ 2轴承钢在超高周循环下的P-S-N特征。
In S-N diagrams for high strength steels, the duplex S-N curves for surface-initiated failure and interior inclusion-initiated failure were usually confirmed in the very high cycle regime. This trend is more distinct in the loading type of rotating bending, due to the stress distribution across the section. In the case of interior failure mode, the fish-eye is usually observed on the fracture surface and an inclusion is also observed at the center of the fish-eye. In the present work, the authors attempted to construct a probabilistic model on the statistical fatigue property in the interior failure mode, based on the distribution characteristics of the location and the size of the interior inclusion at the crack initiation site. Thus, the P-S-N characteristics of the bearing steel (SUJ2) in the very high cycle regime were successfully explained.
影响因子：
6
作者：
Caiza, Paul Dario Toasa;Ummenhofer, Thomas
通讯作者：
Ummenhofer, Thomas