Dielectric Properties of Oven-Dry Wood

Abstract

The term oven-dry wood means wood dried to a constant mass in air at a temperature equal to +103±2°C. Research has shown that the dielectric parameters of oven-dry wood are considerably influenced by the wood density, temperature, the external field frequency, and the orientation of vector Ē relative to the direction of the fibers. In addition, wood from different tree species possesses different dielectric properties. An increase in the field strength affects the ɛ′ and tgδ values of oven-dry wood inconspicuously (Nanassy 1972).