首页|Effect of specimen configuration and loading types on fatigue life of an annealed 0.42% carbon steels
Effect of specimen configuration and loading types on fatigue life of an annealed 0.42% carbon steels
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
In the present study, a unified crack growth law based on the small fatigue crack growth law was investigated using specimens with different configurations and loading types for the annealed 0.42% carbon steel. Then, a convenient prediction method of fatigue life was proposed. This small fatigue crack growth rate was uniquely determined by the modified small crack growth law, de/dN = C'ε~(n')_Pe, despite of changing for specimen configurations and loading types. The constants of C',n' can be estimated by an empirical equation of σ = 1.73σ_hε _P~(0.10) without stress/strain gradient. Considered the effect of stress gradient for different specimen configurations and loading types, the stresses under bending loadings and specimen configurations was calculated from that under push-pull loading. Therefore, the fatigue life of the specimens with different configuration and under different loading types can be simply estimated through the fatigue crack growth law based on the only tensile strength of carbon steels. The availability of proposed method was confirmed experimentally by the results of several carbon steels.
carbon steelspecimen configurationloading typesfatigue life
Xi-Shu Wang、Norio Kawagoishi
展开 >
Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
Department of Faculty of Engineering, Kagoshima University, Kagoshima 890-0065, Japan
NETL
NSTL
