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MULTIFRACTALITY IN AN ELECTROCHEMICAL NOISE SIGNAL BY A BIOCORROSION SYSTEM
Preview AbstractAn analysis of multifractal characteristics of the potential time series of electrochemical noise generated during surface corrosion is performed. The generalized Hurst exponent, called Hq, is computed for potential fluctuations induced for steel corroding by a sulphate reducing bacterial consortia. The results indicate evidence of multifractal behavior in the sense that the qth-order (roughness) Hurst exponent Hq varies with changes in q. This multifractal structure is corroborated by means of microscopy inspection of the corroded surface.