Proceedings of the 5th International Conference on Inverse Problems in Engineering: Theory and Prac- tice, Cambridge, UK, 11-15th July 2005 NEWLY DEVELOPED STRESS INCREMENT MEASUREMENT TECHNIQUE IN PLASTIC REGION BASED ON STRESS INVERSION THEORY

Proceedings of the 5th International Conference on Inverse Problems in Engineering: Theory and Prac- tice, Cambridge, UK, 11-15th July 2005 AN ITERATIVE METHOD FOR RECONSTRUCTION OF TEMPERATURE

Proceedings of the 5th International Conference on Inverse Problems in Engineering: Theory and Prac- tice, Cambridge, UK, 11-15th July 2005 INITIAL TEMPERATURE RECONSTRUCTION FOR A NONLINEAR HEAT EQUA- TION: APPLICATION TO RADIATIVE AND CONDUCTIVE HEAT TRANSFER

S. S. PEREVERZYEV, R. PINNAU and N. SIEDOW 1 Fraunhofer-Institut für Technound Wirtschaftsmathematik, Gottlieb-Daimler-Straße, D-67663 Kaiserslautern, Germany e-mail: [email protected] 2 Fachbereich Mathematik, Technische Universität Kaiserslautern, D-67663 Kaiserslautern, Germany e-mail: [email protected] 3 Fraunhofer-Institut für Technound Wirtschaftsmathematik, Gottlieb-Daimler-...

Proceedings of the 5th International Conference on Inverse Problems in Engineering: Theory and Prac- tice, Cambridge, UK, 11-15th July 2005 A NEW INVERSE SOLVER FOR DIFFUSION TOMOGRAPHY USING MULTIPLE SOURCES

Abstract This is a preliminary report on the development of a diffusion based inverse solver for the Helmholtz equation in the frequency domain, in the context of optical tomography. This utilizes a great simplification of the previously developed Elliptical Systems Method with the use of a certain new PDE of the 2nd order, with related boundary and special conditions. In this report we conside...

Proceedings of the 5th International Conference on Inverse Problems in Engineering: Theory and Prac- tice, Cambridge, UK, 11-15th July 2005 COMPARISON OF TWO FUNCTIONALS FOR DIFFERENT MEASUREMENT PRINCIPLES FOR NON-LINEAR CAPACITANCE TOMOGRAPHY B. KORTSCHAK and B. BRANDSTÄTTER

Abstract – A model based, non-linear reconstruction for Electrical Capacitance Tomography (ECT) is considered as an inverse problem to find the spatial distributed permittivities in a pipe. In practice measurements are performed with a limited number of electrodes and multiple independent measurements are necessary to get information about the whole interior. In this paper the superposition of ...

Proceedings of the 5th International Conference on Inverse Problems in Engineering: Theory and Prac- tice, Cambridge, UK, 11-15th July 2005 COMPARISON OF A GENETIC ALGORITHM AND A GRADIENT BASED OPTI- MISATION TECHNIQUE FOR A THREE-DIMENSIONAL BOUNDARY DETECTION PROBLEM

In this paper we consider the determination of the shape of an unkown portion of the boundary of a three-dimensional solution domain from Cauchy data on the remaining portion of the boundary. This problem arises in the study of quantitative non-destructive evaluation of corrosion in materials in which boundary measurements of currents and voltages are used to determine the material loss caused ...