Electrical study of model composites material

In order to avoid diffusion, accumulation, or other problems of charge migration in interface zones that occur in real composites, the authors develop new model materials. In a first step, the reinforcement is a metallic layer. Simple electrical measurements lead to permittivity values that can be compared with those predicted by different models. The developed multilayer materials can be used as models of real composite materials. However, the dielectric contrast between the materials used seems to explain why classical models are unable to predict permittivity variations whether with the frequency or with the volume fraction of the inclusion. MacLachlan and Debye models (in parallel form) predict and reproduce the experimentally observed behavior in a sufficient and complementary way