Dr.-Ing. Anastassios Skarlatos received the diploma degree in electrical engineering from the University of Patras, Greece, in 1998 and the Ph.D. degree from the Technische Universität Darmstadt, Germany, in 2003. His research interests include the numerical modelling of electromagnetic nondestructive evaluation and material characterization techniques and magnetic materials modelling.
Fast electromagnetic models for simulation of material characterization applications
Magnetic methods for material characterization applications seek to retrieve information for the material microstructure based on macroscopic measurements. For this reason, the numerical modelling of such methods is confronted with the solution of the electromagnetic problem in two different scales. In a micro-mesoscopic scale, the microstructural properties have to be accounted for and properly homogenized in form of a suitable constitutive relation. The instrument response is then calculated by solving the Maxwell equations in a macroscopic level, where the material behavior is taken into account by the formerly derived material law. This law is in general case a nonlinear, history dependent, relation, which has to be addressed using the appropriate numerical tools. In order to be able to provide quantitative predictions of such measurements, and hence establish the link between material microstrure and macroscopic observables, the above described chain of models has to be assimilated in a single simulation tool. With this objective in mind, the CEA LIST has developed a number of diverse models the recent years in a number of parallel actions involving extensive collaborations within a network of academic and industrial partnerships. The purpose of this communication is to provide an overview of these recent activities, and to present the major axes of future developments.