With the large-scale construction of domestic high-speed rail ,and the continuous improvement of train speed, the security problems are gaining increasingly extensive attention. The wheel-sets unit, as important components of the wheel train, supports the full static and dynamic loads from rolling stock. The wear, scratches, peeling, cracks and other defects present to the wheel tread surface and near surface are the major factors endangering traffic safety. Thus, it must be timely an effectively to detect ...
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