Journal of the Korean Wood Science and Technology
- Volume 25 Issue 2
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- Pages.61-66
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- 1997
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- 1017-0715(pISSN)
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- 2233-7180(eISSN)
Effect of Moisture Contents and Density of Paulownia tomentosa on Acoustical Properties
함수율과 밀도가 참오동나무재의 음향 특성에 미치는 영향
- Yoo, Tae-Kyung (College of Agriculture & Life Sciences, Seoul National University) ;
- Jung, Hee-Suk (College of Agriculture & Life Sciences, Seoul National University)
- Received : 1997.04.18
- Published : 1997.06.30
Abstract
Paulownia wood has been used as sound board for Korean traditional musical instruments such as Keomungo(Korean lute), Kayagum(twelve-stringed Korean harp) and Changgu(hour-glass shaped drum), etc. The acoustic properties of wood affected not only by dimensions but also by density and stiffness of wood. Due to inhomogeneity and hygroscopicity of wood. the acoustic properties of wood are inconsistent. To clarify the effect of moisture content and air dry density on acoustic properties, longitudinal vibration experiment was accomplished in 3 moisture content levels of 9.6, 11.1 and 12.5% and in 3 air dry density levels of 0.22, 0.25 and 0.28g/