10.14489/td.2025.06.pp.004-010

2025, 06 June

DOI: 10.14489/td.2025.06.pp.004-010

Gorbunov А. Е., Solomenchuk P. V., Umanskii А. S.
SUPPRESSION OF STRAY PARAMETERS INFLUENCE AT TESTING OF SOLDERED LAP JOINTS OF ELECTRICAL MACHINES
(pp. 4-10)

Abstract. The article is devoted to the issues of suppression of stray parameters influence at eddy current testing of soldered lap joints of electrical machines using a tangential eddy current probe. Among the main stray parameters the paper highlights the deviation of specific conductivity and geometrical parameters of both test blocks and reference blocks in the process of instrument calibration and estimating the soldering integrity of soldered lap joints. In order to increase the reliability of testing correction of measurement results is proposed using developed formulas based on measurements of specific conductivity and thickness of the soldered joint. The probe design implements a clamp and a block stop allowing suppression of the influence of the probe offset relative to the solder joint and reference block in the process of calibration and testing. The technique of determining the soldering integrity of soldered lap joints of current-carrying copper busbars of stator windings of electric machines is suggested.

Keywords: eddy current testing, soldered joints, tangential probe, stray parameters.

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А. Е. Gorbunov (Empress Catherine II Saint Petersburg Mining University, St. Petersburg, Russia, Constanta Ltd., St. Petersburg, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
P. V. Solomenchuk (Constanta Ltd., St. Petersburg, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
А. S. Umanskii (Empress Catherine II Saint Petersburg Mining University, St. Petersburg, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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