Fatigue Reliability Curves for China Railway Grade B Cast Steel Wheel
Four grouped rectangle specimens with thirty four samples, plus eighteen samples for fatigue limits, are tested for constructing the fatigue reliability curves of China grade B cast steel wheel. It reveals that fatigue cracks commonly initiated from the surface weakest phases and grew with typical fatigue striations and sub-cracks perpendicular to the growth direction. Cyclic plastic seems to be strengthened as cyclic stressing level increasing. Fatigue reliability curves are constructed on a consideration of addressing the real super long life. They are evaluated by a concurrent probability extrapolation method. And the measured curves verified that appropriate description has been reached on the test data.
H.Q. Liang et al., "Fatigue Reliability Curves for China Railway Grade B Cast Steel Wheel", Key Engineering Materials, Vols. 480-481, pp. 352-356, 2011