Theoretical and numerical determination of the polymer composite material permeability by the multiscale simulation approach. Part 1. GFRP

The paper formulates homogenization stages of a polymer composite material based on fiberglass and epoxy binder using the multiscale simulation. It develops mathematical model of the electromagnetic radiation transfer in a polymer composite material. The formulated mathematical model allows analyzing the fiberglass effect on alteration in the electric field strength, as the electromagnetic wave passes through the workpiece body. The paper describes a mathematical model in solving the inverse problem of determining the material homogeneous characteristics. Calculation model is developed for electromagnetic radiation passing through the thread volume representative element and the multilayer fiberglass package. Results of simulating the electric field strength in the representative element of the impregnated thread and a multilayer fiberglass package volume are presented. Homogeneous characteristics of the thread volume representative element and the multilayer fiberglass package are determined by solving the inverse problem. The paper demonstrates reliability of the calculated characteristics by comparing them with the experimental data (difference not exceeding 3%).
EDN: PBDALZ, https://elibrary/pbdalz

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