ELIMINATION OF ERROR FROM NONUNIFORM CURRENT DISTRIBUTION IN POLARIZATION MEASUREMENT BY BOUNDARY-ELEMENT INVERSE ANALYSIS

A method was proposed for eliminating error in measuring polarization curves from nonuniform current density distribution on an electrode. B oundary element direct analysis skewed the current density distributio n on a steel plate specimen on soil was considerably nonuniform and th at the nonuniform current density distribution caused significant erro r if no correction was made in measurement of polarization curves, An inverse analysis using the boundary element method (BEM) was used to e liminate the error resulting from the nonuniform current distribution. BEM was shown to be applicable to an arbitrarily shaped specimen with no restriction on location of the reference electrode.