The Influence Factors of Wood Dielectric Constant

Xiang Ling Zhang; Ying Chun Cai; Qiao Fang Zhou; Jing Yao Zhao

doi:10.4028/www.scientific.net/AMR.461.779

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 461The Influence Factors of Wood Dielectric Constant

The Influence Factors of Wood Dielectric Constant

Abstract:

Dielectric constants of Larix gmelinii were measured at 1.1 MHz to 25 MHz (near to frequency of high-frequency heating ), from oven-drying condition to 100％ moisture content, with longitudinal, radial and tangential directions measuring in the experiment. The results showed that: the relationship between MC and dielectric constant can be described as exponential relationship from MC=8% to the fiber saturation point (FSP), above FSP it is linear relationship. The dielectric constant showed decreasing trends when frequency raised. When f﹥10MHz change trend is slow. Permittivity across longitudinal direction is bigger than that across transverse direction，but the difference across tangential direction and that across radial direction is small.

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Periodical:

Advanced Materials Research (Volume 461)

Pages:

779-782

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.461.779

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Online since:

February 2012

Authors:

Xiang Ling Zhang, Ying Chun Cai, Qiao Fang Zhou, Jing Yao Zhao

Keywords:

Dielectric Constant, Frequency, Moisture Content, Wood Grain

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