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Wood quality measurement - son et lumiere.

Authors: M. Andrews
Publication: New Zealand Journal of Forestry, Volume N.Z.J.For. 2002, Issue N.Z.J.For. 47(3) 2002, pp 19-21, Nov 2002
Publisher: New Zealand Institute of Forestry
Abstract: This paper describes the acoustic measurement of wood quality. The use of sonic instruments to measure the speed of 'sound waves' along a sample, such as logs, and relate the speed to elastic modulus are presented in a simple mathematical expression.
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