Effects of annual rings direction on acoustical property of spruce wood used for the soundboard of piano

ZHANG Chaohua, XU Wei, WU Zhihui*, CAI Jiabin, LUO Jianfeng

Journal of Nanjing Forestry University (Natural Sciences Edition） ›› 2010, Vol. 34 ›› Issue (03) : 165-167.

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南京林业大学学报（自然科学版）
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Journal of Nanjing Forestry University (Natural Sciences Edition） ›› 2010, Vol. 34 ›› Issue (03) : 165-167. DOI: 10.3969/j.jssn.1000-2006.2010.03.034

Effects of annual rings direction on acoustical property of spruce wood used for the soundboard of piano

  • ZHANG Chaohua1, XU Wei1, WU Zhihui1*, CAI Jiabin2, LUO Jianfeng 3
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Abstract

This paper studied woods of Picea spp. from North American for soundboard board of piano. When the moisture adjusted to 7 % , those spruce woods which were all quartersawn board were determined the acoustic indexes such as: dynamic elastic modulus(E), specific dynamic elastic modulus(E/ρ), logarithmic decrement ratio(δ) and loss tangent(tan δ). The result showed that woods whose angle between the midline of plate thickness and the tangent line of growth ring were 90°had better acoustical property than woods whose angle were 60° when vibrated in both tangential and radical direction. Woods whose angle were 90°had better acoustical property when vibrated in tangential direction compared with radical direction.

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ZHANG Chaohua, XU Wei, WU Zhihui*, CAI Jiabin, LUO Jianfeng. Effects of annual rings direction on acoustical property of spruce wood used for the soundboard of piano[J]. Journal of Nanjing Forestry University (Natural Sciences Edition）. 2010, 34(03): 165-167 https://doi.org/10.3969/j.jssn.1000-2006.2010.03.034

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