СПОСОБ УЛЬТРАЗВУКОВОГО ИСПЫТАНИЯ ДРЕВЕСИНЫ БРЕВЕНИ БРУСЬЕВ

摘要

FIELD: woodworking; forestry. ^ SUBSTANCE: method can be used for certification of wood and for quality check of round-shaped timer under different condition of storage as well as for estimation of ecological state and ecological mode of terrain by ultrasonic properties of timber barred at the terrain. Sample in form of chock is sawn out of round-shaped timber wood and radial lines with marks are drawn at edges of chock symmetrically. Radiuses of marks are measured on the base of the lines from centers of annual rings. Detectors of ultrasonic device are installed in relation to symmetrical marks at edges of chock; one of detectors is assigned to receiver. Then ultrasonic parameters of wood between edges of chock are measured twice for all marks and among centers of annual rings of chock's edges while putting detector on place of receiver. Pattern of change in ultrasonic parameters of wood are revealed along radiuses of chock. ^ EFFECT: simplified process of measurement; reduced labor input. ^ 5cl, 3 dwg