G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 33/46 (2006.01) G01N 29/07 (2006.01)
Patent
CA 2409496
The invention relates to methods and apparatus for estimating stiffness or elasticity profiles across timber. This involves measuring a velocity of a plane compression wave propagating in the timber, determining density information relating to the timber and estimating an initial elasticity profile. A reiterative process is then conducted whereby a revised elasticity profile is determined using the density information and initial elasticity profile. The revised elasticity profile is then used to determine how the timber is utilised.
L'invention concerne des procédés et un dispositif permettant d'estimer les profils de rigidité ou d'élasticité du bois. Ces procédés consistent à mesurer la vitesse d'une onde de compression plane se propageant dans le bois, à déterminer les informations concernant la densité du bois et à estimer un profil d'élasticité initial. On effectue ensuite un processus itératif permettant de déterminer un profil d'élasticité corrigé au moyen des informations sur la densité et du profil d'élasticité initial. On utilise alors le profil d'élasticité corrigé afin de déterminer comment utiliser le bois.
Andrews Michael Kenneth
Desmond Christopher Anthony Gerard
Carter Holt Harvey Limited
Oyen Wiggs Green & Mutala Llp
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