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 24.

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

	Density	Acoustic invariants in planes (m/s)			Ratio

Wood	(kg/m³)	I_LR	I_LT	I_RT	I ratio
Sound	407	5025	5114	2535	0.50
Attacked	383	5596	5212	2613	0.48
Difference %	−6	+10	+1	+8	−4
Test T	NS	NS	NS	NS	NS

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