Conventional ultrasonic NDT method is quite incompetence for the surface fatigue crack testing of in service rotary shaft.
采用常规超声检测方法对在役转轴表面疲劳裂纹检测的效果很差。
Nodular cast iron crank shaft which has not been processed by adding nitrogen, its surface fatigue strength is lower, this is the reason that results in the fracture.
球墨铸铁曲轴未经过氮化处理，表面疲劳强度低是导致曲轴断裂的原因；
The fatigue damage of the metal material often happens under the action of the dynamic load. The accumulation of fatigue damage of the metal material leads to the result of surface fatigue cracks.
金属构件常常因受到动载荷作用引起疲劳损伤，而疲劳损伤累积的结果往往导致裂纹的产生。
The sampled data, sampled waveform and graph can be real time displayed, so that a supervision for the status of surface fatigue crack growing can be accomplished.
通过监测系统软件设计，实现对采样数据、波形和图形进行实时屏幕显示，对表面疲劳裂纹扩展进行动态监视。
The results show that abrasive water jet polishing surface has a good effect and can improve the surface hardness, surface fatigue strength. The lower the surface hardness, more obvious the effect.
研究表明，微磨料水射流对工件表面具有良好的抛光作用，并能在抛光的同时提高工件表面硬度、表面的疲劳强度，且硬度低的工件表面效果较为明显。
By grinding the fitting surface, fatigue surface of the fitting surface was removed, the fitting surface was coated again. The aim of renovating the grinding shaft was achieved at the end.
通过磨削去除轴径的疲劳层，再进行表面涂镀修复，最终达到修复砂轮主轴的目的。
Adhesive wear and surface - fatigue wear are the two major wear forms in rail steel.
粘附磨损和疲劳磨损是轨钢的主要磨损形式。
Adhesive wear and surface - fatigue wear are the two major wear forms in rail steel.
粘附磨损和疲劳磨损是轨钢的主要磨损形式。
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