10.14489/td.2015.03.pp.030-039

2015, 03 March

DOI: 10.14489/td.2015.03.pp.030-039

Barabanov P.A., Lunin V.P.
FINITE ELEMENT MODELING OF EDDY CURRENT DEPOSITS EVALUATION ON STEAM GENERATOR HEAT-EXCHANGER TUBES
(pp. 30-39)

Abstract. In this paper the importance of deposits detection on external surfaces of the heat-exchanger tubes was discussed. The purpose of this re-search is to make an approach of eddy current deposit detection and evaluation. The finite element modeling has been applied for studying deposits influence on the eddy current signal. The model of the heat-exchanger tube testing by bobbin probe was made. This paper describes the detailed specifications of two-dimensional and three-dimensional finite element models of the testing process. Advantages and disadvan-tages of these models were considered. A database of eddy current signals from deposits with different electrical and magnetic properties and size was measured. Signals have been estimated using the 2D FE model. A brief preliminary analysis of signals and the first conclusion about deposits influence on eddy current probe impedance has been mentioned. Results of the data evaluation indicate the necessity for carrying of deep and detailed signal analysis, which can show the possibility to use one or another method of the signal processing to solve the deposits eddy current evaluation problem.

Keywords: eddy current testing, deposits, heat-exchanger tubes, steam generator, finite element, modeling.

+ - About the Authors Click to collapse

P. A. Barabanov, V. P. Lunin
National Research University “Moscow Power Engineering Institute”, Moscow, Russia. Е-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

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