Reliability Model of Fatigue Damage Evolvement of Semi-Rigid Road Base Material
The fatigue damage evolving model of brittle materials for one-dimension stress status, as the critical damage DC unequal to 1, was established with damage mechanics theory. And also a new fatigue damage evolving reliability model was established based on the supposition of the fatigue life obeying the normal distribution ,which was verified by fatigue experiments taking the semi-rigid base material for example ,and the propagate life can be ignored .The value of damage variable Dp corresponding to any given probability p can be effectively calculated ,the results show that D was a random variable, the method that to determine the damage of materials and to estimate the security of structures with the damage value D calculated by traditional determinate damage evolving model may cause a mistake that the damage could be evaluated out as a much smaller value and the potential danger of structures could be completely covered up.
Xingang Zhou, Mingjin Chu, Jinming Liu, Shuying Qu and Haitao Fan
S. Y. Wang et al., "Reliability Model of Fatigue Damage Evolvement of Semi-Rigid Road Base Material", Applied Mechanics and Materials, Vols. 166-169, pp. 1900-1903, 2012