WIT Press


Recovering Current Density From Data On Electric Potential

Price

Free (open access)

Paper DOI

10.2495/ECOR090171

Volume

65

Pages

12

Page Range

173 - 184

Published

2009

Size

365 kb

Author(s)

J. Irša, A. N. Galybin & A. Peratta

Abstract

In this paper, an inverse problem for galvanic corrosion in two-dimensional Laplace’s equation was studied. The considered problem deals with experimental measurements on electric potential, where due to lack of data, numerical integration is impossible. The problem is reduced to the determination of unknown complex coefficients of approximating functions, which are related to the known potential and unknown current density. By employing continuity of those functions along subdomain interfaces and using condition equations for known data leads to over-determined system of linear algebraic equations which are subjected to experimental errors. Reconstruction of current density is unique. The reconstruction contains one free additive parameter which does not affect current density. The method is useful in situations where limited data on electric potential are provided. Keywords: current density, potential measurements, reconstruction, complex variables.

Keywords

current density, potential measurements, reconstruction, complex variables