Evaluation of thermally modified beech and spruce wood and their properties by FT-NIR spectroscopy |
| |
Authors: | Helmut Bächle Bernhard Zimmer Elisabeth Windeisen Gerd Wegener |
| |
Institution: | 1. Holzforschung München, Technische Universit?t München, Winzererstr. 45, 80797, Munich, Germany 2. Salzburg University of Applied Sciences, Markt 136a, 5431, Kuchl, Austria
|
| |
Abstract: | Quality assessment of thermally modified spruce (Picea abies (L.) Karst) and beech (Fagus sylvatica L.) wood and of the corresponding reference samples was carried out by means of non-destructive FT-NIR spectroscopic measurements
and PLS regression. Oven-dry and basic density as well as MOE and MOR determined by 3-point bending tests were evaluated.
The focus was put on specimens produced from material that had been thermally modified in an industrial scale kiln. Modelling
results range from poor to very good. The results of the spectra taken from the spruce samples resulted in better prediction
results than the spectra of the beech samples. This could be due to different proveniences or variation in the industrial
modification process. The results indicate that FT-NIR surface measurements of sound thermally modified wood samples could
be applied to evaluate several characteristics before and after the modification process. The method could be used for screening
during pre-sorting of thermally modified wood. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|