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   -> Volume 7, Issue 10

Preprint: Data analysis of ECN signal with WT
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Zhang Maoshen (

PostPosted: Mon Oct 12, 1998 7:59 am    
Subject: Preprint: Data analysis of ECN signal with WT
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#8 Preprint: Data analysis of ECN signal with WT

Authors & address Ding Hong-bo, Cai Wen-sheng and Pan Zhong-xiao(Dept. of
Applied Chemistry,University of Science & Technology of
China,Hefei,230026,P.R.China)Yu Xin-zeng(Fujian Institute of Research on
the structure of Matters,Chinese Academy of Sciences,Xiamen,361012)

Keyword Continuous WT,phase plane, ECN ,Concrete reinforced steel

Paper one: "ECN" Signal and Wavelet Transform(Review Work)

Because of the simplicity of testing appliance,ECN method has
attracted much attention on the field of electrochemistry,especially
the monitoring of metal corrosion.Due to the unstationary nature of
ECN signal,the data analysis has been a hard barrier for the wide use
of this technology.We pointed out that,based on the time-frequency
characteristic,wavelet transform will be an ideal tool to solve this
kind of problem.We also implied that,"WT & ECN" will be a promising
method in the study of electrochemical dynamics.

Paper Two:

The Analysis of ECN signal with Continuous Wavelet
Transform(practical work)

Continuous Wavelet Transform was employed to transfer the original ECN
signal into a time-frequency phase plane with colors representing the
coefficiences of CWT.Thus,the time-frequency characteristic of ECN
signal concerning the corrosion process of concrete reinforced steel
was vividly manifested.From the phase plane,we can differenciate the
general corrosion and localized ones.

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