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分析了DF_(8B)型内燃机车整体轮车轴疲劳裂纹产生原因,介绍了采用超声波探伤确定车轴疲劳裂纹的判别方法。
The causes of the fatigue crack on the integral axle of DF_ (8B) diesel locomotive are analyzed. The method to determine the fatigue crack of the axle by ultrasonic testing is introduced.