Patent ID: 7266461
Filing Date: 2007-09-04
Classification: G01N

Abstract:
1. A method for sorting a timber-based raw material group, the method comprising the steps of: obtaining a stress wave velocity which is representative for each of a first, second and third timber-based raw material group (hereinafter referred to as “TBRMG”); obtaining an average diameter for each of the first, second and third TBRMG; obtaining an average diameter of juvenile wood for each of the first, second and third TBRMG; obtaining measured modulus of elasticity data for the first, second and third TBRMG; determining a percentage of juvenile wood for each of the first, second and third TBRMG; obtaining a correction factor JW performing a regression determination utilizing modulus of elasticity as a dependent variable, and stress wave velocity and JW predicting modulus of elasticity of the particular TBRMG from the equation: Where: K1 is the intercept and K2 and K SWV JW sorting the particular TBRMG based on the predicted modulus of elasticity.