Veneer stiffness predicted by NIR spectroscopy calibrated using mini-LVL test panels |
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| Authors: | R Meder A Thumm and H Bier |
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| Affiliation: | (1) Composites Group, FPInnovations—Wood Products, 2665 East Mall, Vancouver, BC, V6T 1W5, Canada;(2) Faculty of Forestry and Environmental Management, University of New Brunswick, 28 Dineen Drive, Fredericton, NB, E3B 5A3, Canada |
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| Abstract: | D. Don) veneers. Spectral data obtained from 1.2×2.4 m veneer sheets was corellated against stiffness data obtained from 6-ply mini-LVL panels prepared from the sheet. This paper describes the method used to prepare the mini-LVL test pieces and the results of multivariate regression of NIR spectra with the test piece stiffness. The results show the potential for using NIR spectroscopy for on-line assessment of veneer stiffness prior to layup of plywood or LVL panels. Selection of high stiffness veneers for layup would enable engineered panels of high uniform stiffness to be produced. |
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