Theoretical and numerical determination of the polymer composite material permeability by the multiscale simulation approach. Part 2. GFRP

The paper formulates homogenization stages of a polymer composite material based on the fiberglass and epoxy binder using the multiscale simulation. It develops a mathematical model of the electromagnetic radiation transfer in the polymer composite material strengthened by the fiberglass making it possible to analyze the fiberglass parameters influence on the electric field strength, as the electromagnetic wave passes through the sample. The paper provides the inverse problem statement to determine the material homogeneous electrophysical characteristics. It proposes a computation model of the electromagnetic radiation passing through the thread volume representative element and the multilayer fiberglass package. Solving the inverse problem makes it possible to determine homogeneous electrophysical characteristics of the thread volume representative element and of the multilayer fiberglass package. The fiberglass model is validated by comparing the dielectric permeability computed values with the experimental data, and the difference in characteristics is not exceeding 6 %).
EDN: CHKRVB, https://elibrary/chkrvb

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