Shielding effectiveness analysis of carbon fiber composite material using tensor impedance boundary condition (TIBC)

A tensor impedance boundary condition (TIBC) is proposed for multilayer unidirectional and woven fabric carbon fiber composite materials. This TIBC will be deployed for analyzing the shielding effectiveness (SE) of a prescribed composites panel. Propagation constants are firstly obtained in case of the composite material, and then the TIBC is formulated directly through modifying general impedance boundary condition (GIBC). Moreover, the effect of incident angle on TIBC is also discussed herein, and conditions for which the incidence angle effect on TIBC can be neglected are given. Finally, several numerical results are provided and compared with simulations from a commercial software in order to validate our proposed theory, and a good agreement is observed.