NDT of composite materials - problems and solutions 3. Modelling of dielectric relaxation phenomena
This paper discusses the modelling of frequency dependent dielectric relaxation as a support for designing transducers, the optimisation of testing conditions, identification of the internal structure of heterogeneous media, evaluation of errors and development of software for expert systems, etc. Basic principles, and the main models for relaxation behaviour are described. In this way it is possible to calculate the frequency dependence of the complex dielectric permittivity of various two- and three-component structures if the frequency dependence of the components is known.