Penetration body for impact strength measurement of wood

Details Penetration body for impact strength measurement of wood Penetration body for impact strength measurement of wood

G - Physics

01

N

73/91

G01N 3/30 (2006.01) G01N 3/48 (2006.01)

Patent

CA 1076388

ABSTRACT OF THE DISCLOSURE The disclosure relates to a method for the non- destructive testing of wood to determine the impact strength thereof essentially independently of the moisture content. The method involves driving a piercing plug having a blunt head into a body of wood substantially transverse to the grain thereof by imparting to said piercing plug a predetermined amount of kinetic energy to cause the plug to penetrate the wood and rupture fibers thereof to produce surfaces of frac- ture as a result of dynamic bending stress and dynamic tensile stress of the wood fibers, and determining the extent of pene- tration of the plug into the wood, whereby said extent of penetration is proportional to the impact strength of the wood.

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