Wideband electromagnetic field modeling in laminated CFRPs using plane-wave decomposition

The electromagnetic field within carbon fiber reinforced plastic (CFRP) laminae is computed using the plane-wave decomposition (PWD) method under time-harmonic excitation, arising either from a probe coil or an incident plane-wave. Changes in probe impedance and shielding efficiency are also evaluated. It is demonstrated that transition layers between adjacent plies must be included for accurate modeling of CFRP plates. Although the conductivity of these layers is generally uncertain, it significantly influences the electromagnetic field distribution. An efficient implementation of the transition layer within the PWD framework is presented, enabling comprehensive parameter sweeps. The examples address practical problems related to eddy-current nondestructive testing, material parameter identification, and electromagnetic shielding efficiency. In addition to providing thorough validation, these examples highlight the potential of the simulation framework for the design, analysis, and understanding of the interaction between CFRP composites and electromagnetic fields.