Apport de la mesure de pente de fil au classement mécanique des bois de structures

If most of the lumber strength grading machines are based on the boards’ elastic modulus and densities, few of them are able to take in account their local singularities. However, the Knot Area Ratio allows improving strength grading by considering the knots distribution inside the wood. Across this study, we have evaluated the influence of the local slope of grain, measured by means of an optical scanner, in the quality of the elastic modulus and strength prediction. Mots clefs : bois, classement, mecanique, fibres, anisotropie