Abstract—

The results of investigating the parameters of ultrasonic signals when increasing rail testing speed presented. Signals from rail bolt holes were selected as test reflectors. It is shown that the holes closest to rail joints are not sounded fully, and signals due to them cannot be used as test reflectors. For a full assessment of the deterioration of the quality of nondestructive testing of rails with an increase in the scanning speed, it is proposed to use the integral indicator of the reflector being analyzed. A noticeable decrease in this indicator at high speeds requires a compromise decision when choosing between performance and quality of rail inspection. The proposed technique can be used to assess the efficiency of operating and newly created flaw detection systems. The necessity of improving the methods of sounding the first bolt holes of the joints and adjusting the normative documents in relation to high-speed control of rails is substantiated.

中文翻译：

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分析高速铁路检查期间的超声波信号参数

摘要-

给出了提高钢轨检测速度时超声信号参数的研究结果。来自轨道螺栓孔的信号被选为测试反射器。结果表明，最靠近钢轨接头的孔没有完全探测到，并且由于它们产生的信号不能用作测试反射器。为了全面评估钢轨无损检测质量随着扫描速度的增加而下降的情况，建议使用被分析反射器的积分指标。在高速行驶时该指标的显着下降需要在铁路检测的性能和质量之间进行选择时做出折衷决定。所提出的技术可用于评估操作和新创建的缺陷检测系统的效率。