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云杉木材年轮方向对钢琴音板声学性能的影响(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2010年03期
Page:
165-167
Column:
研究简报
publishdate:
2010-06-29

Article Info:/Info

Title:
Effects of annual rings direction on acoustical property of spruce wood used for the soundboard of piano
Author(s):
ZHANG Chaohua1 XU Wei1 WU Zhihui1* CAI Jiabin2 LUO Jianfeng 3
1.College of Furniture and Industrial Design, Nanjing Forestry University, Nanjing 210037, China; 2.College of Wood Science and Technology, Nanjing Forestry University, Nanjing 210037, China; 3.Ningbo Luopianos Corporation, Ningbo 315323, China
Keywords:
soundboard of piano spruce wood acoustical property specific dynamic elastic modulus loss tangent
Classification number :
S781
DOI:
10.3969/j.jssn.1000-2006.2010.03.034
Document Code:
A
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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Last Update: 2010-06-29