The failure of blower wheel is caused by corrosion fatigue with the analysis of material, macro and micro fracture appearance, and composition of corrosion material. The crack initiated from the corrosion pits.

通过材质、断口宏微观和腐蚀产物成分分析，确定鼓风机转子叶轮失效模式为腐蚀疲劳，鼓风机转子叶轮上裂纹起源于腐蚀坑。

The cumulative corrosion fatigue life model was established and its accuracy was verified. Corrosion damage characterization factors and the cumulative fatigue life attenuation function were taken as specimen.

定义了腐蚀疲劳寿命累积衰减函数与疲劳寿命衰减速率函数,建立了寿命累积衰减模型,验证了该模型的准确性,并以腐蚀损伤表征因子和腐蚀累积衰减函数为数据样本,用BP神经网络、自适应滤波的LMS算法分别预测了不同年限下的疲劳寿命。

In this paper, the environment erosion and the fatigue damage are contraposed, the corrosion fatigue damages of the pile foundation in railway bridges under the disadvantageous factors are studied and explored.

本文针对钢筋混凝土桥梁中普遍存在的环境侵蚀和疲劳问题,研究与探讨了两不利因素共同作用下铁路桥梁桩基础的锈蚀疲劳损伤。