Accession Number : ADA196675

Title :   Identification of Small Inhomogeneities of Extreme Conductivity by Boundary Measurements: A Continuous Dependence Result.

Descriptive Note : Final rept.,

Corporate Author : MINNESOTA UNIV MINNEAPOLIS INST FOR MATHEMATICS AND ITS APPLICATIONS

Personal Author(s) : Friedman, Avner ; Vogelius, Michael

PDF Url : ADA196675

Report Date : Dec 1987

Pagination or Media Count : 31

Abstract : Consider an electrostatic problem for a conductor consisting of finitely many small inhomogeneities of extreme conductivity, embedded in a spatially varying reference medium. Firstly we establish an asymptotic formula for the voltage potential in terms of the reference voltage potential, the location of the inhomogeneities and their geometry. Secondly we use this representation formula to prove a Lipschitz continuous dependence estimate for the corresponding inverse problem. This estimate bounds the difference in the location and in the relative size of two sets of inhomogeneities by the difference in the boundary voltage potentials corresponding to a fixed current distribution.

Descriptors :   *ELECTROSTATICS, *MATRIX MATERIALS, BOUNDARIES, DISTRIBUTION, ESTIMATES, FORMULATIONS, HETEROGENEITY, INVERSION, MEASUREMENT, SIZES(DIMENSIONS), VOLTAGE, ELECTRICAL CONDUCTIVITY

Subject Categories : Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE