Jr. Nault et Jf. Manville, SPECIES DIFFERENTIATION OF 2 COMMON LUMBER MIXES BY DIFFUSE-REFLECTANCE FOURIER-TRANSFORM INFRARED (DRIFT) SPECTROSCOPY, Wood and fiber science, 29(1), 1997, pp. 2-9
Citations number
16
Categorie Soggetti
Materiales Science, Textiles","Materials Science, Paper & Wood",Forestry
Diffuse reflectance Fourier transform infrared (DRIFT) spectroscopy wa
s used to differentiate coniferous woods by species. Species mixtures
studied were SPF (composed of white spruce [Picea glauca Voss], Engelm
ann spruce [Picea engelmannii Parry], lodgepole pine [Pinus contorta D
ougl.] and subalpine fir [Abies lasiocarpa Nutt.]) and HEM/FIR (compos
ed of western hemlock [Tsuga heterophylla Sarg.], amabilis fir [Abies
amabilis Dougl.] and Sitka spruce [Picea sitchensis Carr.]). DRIFT spe
ctra of the green wood samples were used in SIMCA (simple modeling of
class analogy) pattern recognition to differentiate species. This appr
oach was able to classify SPF with 90% accuracy when all samples were
identified, and 94% accuracy when poorly classified samples were elimi
nated. For the HEM/FIR group, the method was able to classify all samp
les with 81% accuracy, and up to 99% accuracy when poorly classified s
amples were eliminated.