Interaction between wood density and speed of sound in spruce structural timber
Journal Title: Annals of WULS, Forestry and Wood Technology; Zeszyty naukowe SGGW - Year 2017, Vol 98, Issue
Abstract
Interaction Between Wood Density and Speed of Sound in Spruce Structural Timber. Density of wood and speed of sound propagation are significant parameter used to detect quality of construction timber. Density of wood can be detect on small samples (ρsmall according to EN 408) or on whole board (ρboard – for measuring by MTG Timber Grader). Speed of sound propagation could be measured on board Sylvatest DUO (cultr) a MTG Timber Grader (cvibr) in situ. Spruce boards (Picea abies Karst. L.) were used in the experiment. Sampling was carried out randomly (location Slovakia – 2 samplings). Density of wood (ρsmall, ρboard) ρboard is 12% higher than ρsmall, and speed of sound is 13% higher than cvibr. Dependencies of ρsmall, ρboard cultr, cvibr show more significant results on both devices. Results describe the interaction of monitored parameters more reliably by in situ devices application
Authors and Affiliations
Alena ROHANOVÁ, Ondrej Bajza
Keywords
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