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Study on Physical Properties of Domestic Species I: Sorption, Thermal, Electrical and Acoustic Properties of Pinus Densiflora  

Kang, Ho-Yang (College of Agriculture, Chungnam National University)
Byeon, Hee-Seop (College of Agriculture and Life Science, IALS, Gyeongsang National University)
Lee, Won-Hee (College of Agriculture and Life Science, Kyungpook National University)
Park, Byung-Soo (Forest Products Division, Korea Forestry Research Institute)
Park, Jung-Hwan (College of Agriculture and Life Science, IALS, Gyeongsang National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.36, no.3, 2008 , pp. 70-84 More about this Journal
Abstract
A series of the studies on the applied physical properties of domestic species have been conducted last three years. Pinus densiflora was one of the three species examined for the first year. Because the same apparatus and experimental procedures were used for all species, their results can be easily comparable. The experiments for sorption property were conducted with 20- and 80-mesh wood powder and resulted in their EMC's and sorption isotherms at various heating conditions. The thermal conductivity and diffusivity, and electric resistance and volumetric electric resistivity were measured with a thermal-wire device and a high electric resistance meter. The differences of the thermal and electric properties between quarter- and flat-sawn specimens were observed, which was partially attributed to their anatomical differences. An acoustic measurement system was used to evaluate dynamic MOE and internal friction. This paper provides the useful fundamental data for designing a wood structure, correcting a portable resistance-type moisture meter, and nondestructive testing wood.
Keywords
Pinus desiflora; sorption isotherm; thermal conductivity; thermal diffusivity; electric volume resistivity; electric resistance; acoustic property; dynamic MOE; internal friction;
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