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Analyzing Ultrasonic Signal Parameters during High-Speed Rail Inspection

  • ACOUSTIC METHODS
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Russian Journal of Nondestructive Testing Aims and scope Submit manuscript

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.

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Notes

  1. In the track industry the bolt holes are conventionally always counted from the end of the rail.

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  1. AO Radioavionika, 190005, St. Petersburg, Russia

    A. A. Markov & E. A. Maximova

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  1. A. A. Markov
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  2. E. A. Maximova
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Correspondence to A. A. Markov.

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Markov, A.A., Maximova, E.A. Analyzing Ultrasonic Signal Parameters during High-Speed Rail Inspection. Russ J Nondestruct Test 57, 181–194 (2021). https://doi.org/10.1134/S1061830921030037

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  • DOI: https://doi.org/10.1134/S1061830921030037

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