M. Tiitta, P. Kainulainen, A. M. Harju, M. Venäläinen, A.-M. Manninen, M. Vuorinen, H. H.Viitanen
Comparing the Effect of Chemical and Physical Properties on Complex Electrical Impedance of Scots Pine Wood
Summary
This study examined the effects of physical (moisture content, water content and wood density)
and chemical properties (concentration of phenolics and resin acids) on the electrical properties of
Scots pine (Pinus sylvesteris L.) wood specimens. Complex impedance was measured from heartwood
and sapwood specimens using frequencies between 5 kHz and 1 MHz. Significant correlation
between density and electrical properties was found at high frequencies with sapwood specimens
in which the extractive content was low. Moisture content had an effect on electrical
properties over the whole frequency range. Electrical properties of heartwood samples with high
extractive content were differently affected by the chemical and physical properties. Electrical
properties were sufficient to distinguish between the samples from the brown-rot resistant and
susceptible Scots pine trees.
Holzforschung, Walter de Gruyter
Print ISSN: 0018-3830
Volume: 57, 06/2003
Pages: 433 - 439
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