A Dual BEM Genetic Algorithm Scheme for the Identification of Polarization Curves of Buried Slender Structures
L.A. de Lacerda; and J. M. da Silva

Source CMES: Computer Modeling in Engineering & Sciences, Vol. 14, No. 3, pp. 153-160, 2006
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Keywords Dual boundary element method, Cathodic protection, Genetic algorithm, Inverse analysis.
Abstract A two-dimensional boundary element formulation is presented and coupled to a genetic algorithm to identify polarization curves of buried slender structures. The dual boundary element method is implemented to model the cathodic protection of the metallic body and the genetic algorithm is employed to deal with the inverse problem of determining the non-linear polarization curve, which describes the relation between current density and electrochemical potential at the soil metal interface. In this work, this non-linear relation resulting from anodic and cathodic reactions is represented by a classical seven parameters expression. Stratified soil resistivity is modeled with a piece-wise homogeneous domain. The inverse analysis is guided by potential measurements at the soil free surface. The identification method is analysed under different measurement conditions.
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