ELECTROCHEMICAL NOISE ANALYSIS OF UNIFORM CORROSION IN WATER SUPPLY SYSTEM

Janusz Smulko, Kazimierz Darowicki, Artur Zieliñski

Abstract

The results of electrochemical noise measurements and their analysis for evaluation of corrosion intensity in the water supply system are presented. The polarization resistance Rp is calculated for corrosion evaluation, estimated by applying the proposed method of noise analysis. The method includes trend removal and impedance calculation by dividing power spectral densities of the detrended voltage and current fluctuations. The estimated impedance at low frequencies is used for Rp value calculation. The applied algorithm of electrochemical noise detrending is based on its decomposition and after trend removal reconstruction using wavelet transform.

Keywords

noise, corrosion, wavelet transform

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PWC-2003-TC4-048.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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