Thickness measuring of electroconductive pipe walls using the dual-frequency eddy-current method

Evgeny Yakimov, Olga Galtseva, Daniil Ustyugov

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3 Citations (Scopus)


The paper describes a dual-frequency method for reducing the impact of changes in the gap size between the eddy-current transducer and the pipe, as well as the pipe electrical conductivity on the eddy-current thickness gauge readings. A block-diagram of the dual-frequency eddy-current thickness gauge is proposed for light-alloy drill pipes. The amplitude and signal phase dependencies on the wall thickness in the range from 6 to 17 mm and the gap in the range from 0 to 13.5 mm were studied, the results are presented. The digital signal processing algorithms based on the piecewise-linear approximation of low-frequency and high-frequency signal phase dependencies on the wall thickness are proposed. It is shown that the proposed correction algorithms can reduce the error caused by variations of electrical conductivity and the gap between the transducer and the pipe.

Original languageEnglish
Article number012061
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 19 Jan 2017
Event13th European Workshop on Advanced Control and Diagnosis, ACD 2016 - Lille, France
Duration: 17 Nov 201618 Nov 2016


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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