Density normalization of susceptibility for compressible artificial material measurements

An approach to accurate permittivity measurements of compressible materials has been presented. The method uses both the measured, uncompressed density and the calculated, compressed density to account for the change in measured permittivity between compressed and uncompressed specimens of the same material. Normalizing susceptibility to compressed density provides data that closely agreed with actual values. Also, some of the advantages and difficulties in preparing elastomer and ceramic powder composite specimens have been discussed.