Proceeding of 5 international Conference on Inverse Problems in Engineering: Theory and Practice Cambridge, UK, 11-15 th July 2005 ESTIMATION OF THE INITIAL TEMPERATURE PROFILE IN THE CHANNEL OF AN EXPERIMENTAL EXTRUSION DIE

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 Practice, Cambridge, UK, 11–15 July 2005 AN IDENTIFICATION PROBLEM ARISING IN THE THEORY OF HEAT CONDUCTION FOR MATERIALS WITH MEMORY

We deal with the problem of recovering a memory kernel k(t, η), depending on time t and on a spatial variable η, in a parabolic integro-differential equation related to a bounded domain Ω ⊂ R. We show that, under suitable assumptions and two pieces of additional information, our identification problem can be uniquely solved locally in time.

Proceedings of the 5th International Conference on Inverse Problems in Engineering: Theory and Practice, Cambridge, UK, 11-15th July 2005 NONSTATIONARY BOUNDARY ESTIMATION IN ELECTRICAL IMPEDANCE TOMOGRAPHY BASED ON THE IMM SCHEME

In this paper, an effective nonstationary boundary estimation scheme in EIT is presented based on the interacting multiple model (IMM) algorithm. The inverse problem is treated as a stochastic nonlinear state estimation problem with the time-varying boundary (state) being estimated on-line with the aid of the IMM algorithm. In the design of the IMM algorithm multiple models with different proce...

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-...

Effect of Die Profile on Mechanical Properties of Product in Extrusion of Rods

In any metal forming process, both the strain rate and deformation rate depend on the die profile. The die profile also, is responsible for the non-uniformity of the deformation along the cross-section. These affect the quality and mechanical properties of the product. Therefore, if a die is designed, in which the affecting variables can be controlled spontaneously it is hoped to obtain a produ...