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Modeling of Ultrasonic Waves in Fractured Rails with an Explicit Approach

  • Mathematical Physics
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Abstract

Ultrasonic wave propagation in steel rails with explicit identification of flaws is numerically simulated. The problem is to detect a vertical crack in a railhead by applying ultrasonic nondestructive testing techniques. The propagation of elastic waves in the rail profile is simulated for various sizes and positions of the crack. It is shown that the finite-difference grid-characteristic method in the time domain and full-wave simulation can be used to analyze the effectiveness of rail flaw detection by applying ultrasonic nondestructive testing techniques. Full-wave simulation is also used to demonstrate the failure of the widely used echo-mirror method to detect flaws of certain types. It is shown that techniques for practical application of the ultrasonic delta method can be developed using full-wave supercomputer simulation. The study demonstrates a promising potential of geophysical methods as adapted to the analysis of ultrasonic nondestructive testing results.

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Authors and Affiliations

  1. Laboratory of Applied and Computational Geophysics, Moscow Institute of Physics and Technology (State University), Dolgoprudnyi, Moscow oblast, 141700, Russia

    A. V. Favorskaya, S. V. Kabisov & I. B. Petrov

  2. Educational, Scientific, and Experimental Center, Moscow Institute of Physics and Technology, Zhukovskii, Moscow oblast, 140180, Russia

    A. V. Favorskaya

  3. Scientific Research Institute for System Analysis, Russian Academy of Sciences, Moscow, 117218, Russia

    I. B. Petrov

Authors
  1. A. V. Favorskaya
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  2. S. V. Kabisov
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  3. I. B. Petrov
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Correspondence to A. V. Favorskaya.

Additional information

Original Russian Text © A.V. Favorskaya, S.V. Kabisov, I.B. Petrov, 2018, published in Doklady Akademii Nauk, 2018, Vol. 481, No. 1.

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Favorskaya, A.V., Kabisov, S.V. & Petrov, I.B. Modeling of Ultrasonic Waves in Fractured Rails with an Explicit Approach. Dokl. Math. 98, 401–404 (2018). https://doi.org/10.1134/S1064562418050022

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  • DOI: https://doi.org/10.1134/S1064562418050022

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