Please use this identifier to cite or link to this item: http://earchive.tpu.ru/handle/11683/35271
Title: Reducing the Impact of Electroconductivity and the Gap between the Pipe and the Transducer at Measuring Thickness of Electroconductive Pipe Walls using the Eddy-Current Method
Authors: Yakimov, Evgeny Valeryevich
Ustyugov, Daniil
Keywords: электропроводность; вихретоковые методы; электрическая проводимость; толщиномеры; бурильные трубы; цифровая обработка; сигналы
Issue Date: 2016
Publisher: [s. n.]
Citation: Yakimov E. V. Reducing the Impact of Electroconductivity and the Gap between the Pipe and the Transducer at Measuring Thickness of Electroconductive Pipe Walls using the Eddy-Current Method / E. V. Yakimov, D. Ustyugov // MATEC Web of Conferences. — 2016. — Vol. 79 : Information-Measuring Equipment and Technologies (IME&T 2016) : VII Scientific Conference with International Participation, May 25-28, 2016, Tomsk, Russia : [proceedings]. — [01069, 5 p.].
Abstract: 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 eddycurrent 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.
URI: http://earchive.tpu.ru/handle/11683/35271
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