钢材中非金属夹杂物对塔机结构疲劳寿命的影响

The effect of nonmetal impurity to the structure fatigue life of tower crane

从塔式起重机倒塔事故实例入手,通过对断口检查、超声波检测、材料弯曲试验和非金属夹杂物对早期疲劳破坏发生机理的分析,说明塔式起重机主要受力材料中非金属夹杂物对结构疲劳寿命的影响。

Start with the case of crane topple down accident, this article analyses the influence of nonmetal impurity to the structure fatigue life of tower crane. From the outcome of the test of fracture detection, ultrasonic detection and material bending test, it explains the effect of nonmetal impurity to the structure fatigue life of tower crane.