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Possibilities of Manual Eddy Current Testing for Depth Gaging of Contact-Fatigue Cracks on Rail Rolling Surface

  • ELECTROMAGNETIC METHODS
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Abstract

The possibility of using the eddy current method to assess the depth of cracks in the rolling surface of rails in operation during the planning and acceptance of work of a rail grinding train is investigated. Experimental studies of the influence of the excitation frequency and the angle of inclination of the eddy current transducer, the surface state, and the depth and angle of inclination of the surface crack on the amplitude and phase of the eddy current signal are carried out. The possibilities of the amplitude-phase method of detuning from interfering factors associated with the inclination of the transducer and the curvature of the tested surface are determined. The resolution of the flaw detector was investigated when evaluating the characteristics of two or more closely spaced cracks—a defect of the crack “network” type. The depth of surface cracks in the range from 0.1 to 1.4 mm was determined by metallographic examination after eddy current testing. Optimal testing parameters have been experimentally substantiated and a correlation between the crack depth and the projection of the signal amplitude in the direction perpendicular to the direction of change of the interfering factor, i.e., the angle of transducer inclination, has been established.

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Funding

The research was carried out using measures of state support for the development of cooperation between Russian higher educational institutions, state scientific institutions, and organizations of the real sector of economy implementing complex projects for the creation of high-tech production, provided for by the Decree no. 218 of the Government of the Russian Federation dated April 9, 2010 on the topic “High-performance technology of high-speed grinding of rails and equipment for its implementation based on intelligent digital modules,” agreement no. 075-11-2022-014 dated April 8, 2022.

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Authors and Affiliations

  1. Siberian Transport University, 630049, Novosibirsk, Russia

    S. P. Shlyakhtenkov, A. A. Popkov & S. A. Bekher

  2. OOO “EVRAZ”, 121353, Moscow, Russia

    D. B. Nekrasov & S. V. Palagin

  3. AO “EVRAZ ZSMK”, 654042, Novokuznetsk, Kemerovo oblast, Russia

    O. V. Bessonova

Authors
  1. S. P. Shlyakhtenkov
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  2. D. B. Nekrasov
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  3. S. V. Palagin
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  4. O. V. Bessonova
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  5. A. A. Popkov
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  6. S. A. Bekher
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Corresponding authors

Correspondence to S. P. Shlyakhtenkov or D. B. Nekrasov.

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Shlyakhtenkov, S.P., Nekrasov, D.B., Palagin, S.V. et al. Possibilities of Manual Eddy Current Testing for Depth Gaging of Contact-Fatigue Cracks on Rail Rolling Surface. Russ J Nondestruct Test 59, 447–455 (2023). https://doi.org/10.1134/S1061830923700328

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  • DOI: https://doi.org/10.1134/S1061830923700328

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