Ventajas del análisis Wavelet sobre el análisis de Fourier para la interpretación del ruido electroquímico

L. Espada; M. Sanjurjo; S. Urréjola; F. Bouzada; G. Rey; A. Sánchez

doi:10.3989/revmetalm.2003.v39.iExtra.1100

Advantages of Wavelet analysis compared to Fourier analysis for the interpretation of electrochemical noise

Authors

L. Espada Departamento de Ingeniería Química. E.T.S.E.I. e M. Universidade de Vigo
M. Sanjurjo Departamento de Ingeniería Química. E.T.S.E.I. e M. Universidade de Vigo
S. Urréjola Departamento de Ingeniería Química. E.T.S.E.I. e M. Universidade de Vigo
F. Bouzada Departamento de Ciencia de los Materiales. ETS.E.I. e M. Universidade de Vigo
G. Rey Departamento de Ingeniería Química. E.T.S.E.I. e M. Universidade de Vigo
A. Sánchez Departamento de Ingeniería Química. E.T.S.E.I. e M. Universidade de Vigo

DOI:

https://doi.org/10.3989/revmetalm.2003.v39.iExtra.1100

Keywords:

Electrochemical noise, Wavelet transform, Fourier analysis, Corrosion

Abstract

Given its simplicity and low cost compared to other types of methodologies, the measurement and interpretation of Electrochemical Noise, is consolidating itself as one of the analysis methods most frequently used for the interpretation of corrosion. As the technique is still evolving, standard treatment methodologies for data retrieved in experiments do not exist yet. To date, statistical analysis and the Fourier analysis are commonly used in order to establish the parameters that may characterize the recordings of potential and current electrochemical noise. This study introduces a new methodology based on wavelet analysis and presents its advantages with regards to the Fourier analysis in distinguishing periodical and non-periodical variations in the signal power in time and frequency, as opposed to the Fourier analysis that only considerers the frequency.

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Published

2003-12-17

How to Cite

Espada, L., Sanjurjo, M., Urréjola, S., Bouzada, F., Rey, G., & Sánchez, A. (2003). Advantages of Wavelet analysis compared to Fourier analysis for the interpretation of electrochemical noise. Revista De Metalurgia, 39(Extra), 72–79. https://doi.org/10.3989/revmetalm.2003.v39.iExtra.1100

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Issue

Vol. 39 No. Extra (2003)

Section

Articles

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