10.14489/td.2025.05.pp.004-015

2025, 05 May

DOI: 10.14489/td.2025.05.pp.004-015

Zagidulin R. V., Bakiev A. T., Baykova A. R.
ON THE ISSUE OF MUTUAL INFLUENCE OF PROBES IN A MULTIPLE-UNIT (MATRIX) SURFACE EDDY CURRENT PROBE
(pp. 4-15)

Abstract. The distribution of eddy currents induced in metal by a surface multiple-unit eddy current probe (ECP) is investigated. A mathematical formula is derived to calculate the increment in the magnetic moment of the eddy currents within the metal, accounting for the mutual interactions and orientation of the individual eddy current probes within the ECP array. The results indicate that the increment in the magnetic moment of the eddy currents increases monotonically as the spacing between the probes in the ECP array decreases, while the sign of the magnetic moment increment is determined by the phase configuration of the probes in the ECP array. Inphase switching on of eddy current probes in the ECP array reduces the increment of the magnetic moment of eddy currents and diminishes the amplitude of the surface ECP signal. In contrast, when the probes operate in antiphase, the magnetic moment increment increases, leading to an enhanced signal amplitude for the ECP. It is shown that theoretical calculations of the mutual influence between the surface eddy current probes in the multiple-unit ECP are in accordance with experimental observations.

Keywords: eddy current flaw detector, eddy current probe, multiple-unit eddy current probe, eddy current distribution area, eddy currents areal density, electromagnetic moment, signal amplitude.

+ - About the Authors Click to collapse

R. V. Zagidulin (FSBEI HE USPTU, Ufa, Russia)
A. T. Bakiev (Engineering and technical center LLC “Gazprom transgaz Ufa”, Ufa, Russia)
A. R. Baykova (Design Institute LLC “Bashgiproneftekhim”, Ufa, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

1. Shleenkov A. S., Krotov L. N., Scherbinin V. E., Kop'ev M. A. (1987). Multielement transducer for magnetic flaw detection. Defektoskopiya, (9), 60 ‒ 64. [in Russian language]
2. Mamaev A. V., Meleshko N. V., Pokrovskiy A. D., Hvostov A. I. (2005). Matrix magnetic converter in flaw detection. Proceedings of 17th Russian scientific-technical conf. Non-destructive testing and diagnostics, 1 – 4. Ekaterinburg: IMASH UrO RAN. [in Russian language]
3. Pankov V. V., Pomerantsev D. S. (2020). Ultrasonic testing using phased array transducers. Basic principles. Kontrol'. Diagnostika, (3), 38 ‒ 43. [in Russian language] DOI: 10.14489/td.2020.03.pp.038-043
4. Fedosenko Yu. K., Shkatov P. N., Efimov A. G. (2011). Eddy current testing. Moscow: ID Spektr. [in Russian language]
5. Muzhitskiy V. F., Karabchevskiy V. A., Karpov S. V. (1998). Computerized eddy current flaw detector VD-89NM for examining the surface of a steel pipe for cracks and corrosion areas. Kontrol'. Diagnostika, (4), 31 ‒ 34. [in Russian language]
6. Muzhitskiy V. F., Karabchevskiy V. A., Karpov S. V. (2004). Eddy current flaw detection using matrix transducers in diagnostics of main gas pipeline pipes. Metall. Oborudovanie. Instrument, 50 ‒ 53. [in Russian language]
7. Konnov V. V., Konnov Vl. Vl., Kuznetsov A. M. et al. (2015). Results of experimental operation of the automated scanner-flaw detector ASD "Vikhr" during major repairs of the linear section of main gas pipelines. Kontrol'. Diagnostika, (2), 32 ‒ 37. [in Russian language] DOI: 10.14489/td.2015.02.pp.032-037
8. Mantrova Yu. V., Pokrovskiy A. D. (2017). Study of signals of matrix eddy current transducer. Vestnik MEI, (1), 74 ‒ 78. [in Russian language]
9. Zagidulin R. V., Bakiev A. T., Baykova A. R. (2025). Study of the distribution region of eddy currents induced in metal by a clampon eddy current transducer. Kontrol'. Diagnostika, (3), 21 ‒ 31. [in Russian language] DOI: 10.14489/td.2025.03.pp.021-031
10. Efimov A. G., Shubochkin A. E. (2013). Distribution of the signal of a clampon eddy current transducer over a steel product with a finite-length surface continuity defect. Kontrol'. Diagnostika, (3), 49 ‒ 55. [in Russian language]
11. R Gazprom 2-2.3-1251–2021. (2021). Main gas pipelines. Diagnostic examination. Stress-corrosion defects of pipes. Assessment methodology. Moscow: PAO Gazprom. [in Russian language]

+ - Purchase digital version of a single article Click to collapse

This article is available in electronic format (PDF).

The cost of a single article is 700 rubles. (including VAT 20%). After you place an order within a few days, you will receive following documents to your specified e-mail: account on payment and receipt to pay in the bank.

After depositing your payment on our bank account we send you file of the article by e-mail.

To order articles please copy the article doi:

10.14489/td.2025.05.pp.004-015

and fill out the form