Wheel tread wear leads to change of the wheel profile and rolling diameter, which influences the dynamic behaviors of railway vehicles seriously.

车轮踏面磨耗导致车轮外形改变，使其滚动圆直径产生偏差，对车辆系统的动力学特性影响较大。

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It is significant to improve the inspection level by using machine vision measurement technology in on-line automatic inspection for train wheel flange and tread wear rates.

采用机器视觉测量技术实现对车轮轮缘踏面磨损的在线自动检测，对提高我国铁路车轮轮对的检测水平，具有重要的现实意义。

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The wheel flange wear is caused by the flange action of the wheel and rail, whereas the double-groove wear on tread may be mainly caused by the break shoe.

轮缘磨耗主要是轮轨相互作用的结果，而踏面上的凹槽磨耗可能主要由闸瓦制动引起。

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