Ultrasound and Wood Science at the Forestry Research Centre in Nancy, France, for a period of twenty years, between 1979 and 1999

Topical Issue - Development of European Acoustics in 20th Century

Open Access

Table 23.

Impact of water storage and Bacillus subtilis attack on ultrasonic velocities [62].

Wood
Wood		Ultrasonic velocity (m/s)
	Density	P compressional waves			S shear waves

Picea abies	(kg/m³)	V_LL	V_RR	V_TT	V_RT	V_LT	V_LR
Sound	407	4619	1994	1251	665	1276	1395
Attacked	383	4740	2115	1309	567	1222	1480
Difference %	−6	+3	+2	+4	−15	−4	+1
Test T	NS	NS	NS	NS	**	NS	NS

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