Thickness measuring of electroconductive pipe walls using the dual-frequency eddy-current method; Journal of Physics: Conference Series; Vol. 783, conf. 1 : Advanced Control and Diagnosis (ACD 2016)

Thickness measuring of electroconductive pipe walls using the dual-frequency eddy-current method; Journal of Physics: Conference Series; Vol. 783, conf. 1 : Advanced Control and Diagnosis (ACD 2016)

Bibliographic Details
Parent link:Journal of Physics: Conference Series
Vol. 783, conf. 1 : Advanced Control and Diagnosis (ACD 2016).— 2017.— [012061, 5 p.]
Main Author: Yakimov E. V. Evgeny Valeryevich
Corporate Author: Национальный исследовательский Томский политехнический университет (ТПУ) Институт неразрушающего контроля (ИНК) Кафедра физических методов и приборов контроля качества (ФМПК)
Other Authors: Galtseva (Gal’tseva) O. V. Olga Valerievna, Ustyugov D. A. Daniil Andreevich
Summary:Title screen
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.
Language:English
Published: 2017
Subjects:
электронный ресурс
труды учёных ТПУ
электропроводящие трубы
вихретоковые методы
измерения
Online Access:http://dx.doi.org/10.1088/1742-6596/783/1/012061
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=653923

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