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On the Possibility of In-Process Magnetic Detection of Flaws in Rails

  • ELECTROMAGNETIC METHODS
  • Published:
Russian Journal of Nondestructive Testing Aims and scope Submit manuscript

Abstract

A procedure has been developed to detect surface defects in the head and foot of a rail using a magnetic method involving thin-film magnetoresistive field sensors. The setup consists of a system for moving the rail in the longitudinal direction, a magnetizing solenoid, cartridges with field sensors for inspecting the rail head and foot, a DC electromagnet with attached pole pieces, and a “robotic” transverse movement unit with an additional cartridge for revealing long-sized defects (over the entire length of the rail). The electrical signals of the sensors are transmitted to an analog-to-digital converter and processed digitally. The possibility of detecting all surface defects stipulated by the regulatory and technical documentation of JSC Russian Railways is demonstrated.

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Notes

  1. It should be noted that defects of the “delamination” type are not included in the table of defects that must be detected in accordance with the JSC Russian Railways regulations.

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Funding

This work was carried out within the framework of the state order from the RF Ministry of Education and Science on topic “Diagnostics”, project no. АААА-А18-118020690196-3.

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Authors and Affiliations

  1. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620108, Yekaterinburg, Russia

    A. S. Shleenkov, O. A. Bulychev, A. B. Pastukhov & S. A. Shleenkov

Authors
  1. A. S. Shleenkov
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  2. O. A. Bulychev
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  3. A. B. Pastukhov
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  4. S. A. Shleenkov
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Corresponding author

Correspondence to A. S. Shleenkov.

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Translated by V. Potapchouck

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Shleenkov, A.S., Bulychev, O.A., Pastukhov, A.B. et al. On the Possibility of In-Process Magnetic Detection of Flaws in Rails. Russ J Nondestruct Test 55, 942–948 (2019). https://doi.org/10.1134/S1061830919120118

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  • DOI: https://doi.org/10.1134/S1061830919120118

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