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Calculation of effective dielectric permittivity and electrical conductivity of composites containing conductive oriented filaments
Russian version
Postelga A. E. 1, Igonin S. V. 1
1Saratov State University, Saratov, Russia
Email: sanyalace@list.ru, igoninsemen@ya.ru
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A model has been developed for calculating the frequency dependence of the microwave reflectivity from composites with oriented fibers. The oriented fiber composite was replaced by a multilayer model, each layer of which was calculated using perturbation theory. The model was applied to calculate the effective complex permittivity of these composites. The feasibility of using this model to calculate the reflectivity spectrum from composites with nonuniform fillings was demonstrated. The applicability criteria for a simpler model in which the fiber composite is replaced by a lamellar structure were also examined. Keywords: fiber composites, permittivity, electrical conductivity, microwave, threads, fibers, columns, effective medium, numerical methods, perturbation theory.
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