An approach for modeling the attenuation of UHF oscillations in a class of composite materials

The use of composite materials in the aerospace industry necessitates their design in a way that makes them suitable for non-destructive testing, including ultra-high frequency diagnostic methods using emission in the range of several megahertz to several gigahertzes. Basic parameter determining the possibilities of using this method is the attenuation of the ultrahigh-frequency oscillations, which in cases of practical interest is clearly related to their permittivity. Usually the permittivity is determined after the preparation of the composite material, most often through experimental studies of the samples thereof. The present study presents an approach for modeling homogeneous composite materials in order to determine their permittivity, as well as the limitations for using the model.