WIT Press


Conductivity Computed Tomography

Price

Free (open access)

Paper DOI

10.2495/HT980011

Volume

20

Pages

10

Published

1998

Size

587 kb

Author(s)

K. Onishi

Abstract

We present a hybrid method for numerical identification of thermal con- ductivity of a solid, based on the Cauchy data comprising temperature and thermal flux on a part of the surface of the solid. The alternate direction algorithm proposed by Kohn and Vogelius (1987) for impedance computed tomography with prescribed Dirichlet-Neumann map is combined with a boundary value identification algorithm with assumed conductivity to yield a new hybrid method. A single set of Cauchy data is used. A variational approach is applied to this inverse problem, which makes the problem into a series of direct boundary value problems of the quasi-harmonic equation. A simple numerical example suggests that the hybrid method

Keywords