TY - GEN
T1 - Enhanced on-line stress grading of sawn lumber using near infrared spectroscopy
AU - Fujimoto, Takaaki
AU - Matsumoto, Kazushige
AU - Kurata, Yohei
AU - Tsuchikawa, Satoru
PY - 2010
Y1 - 2010
N2 - Near-infrared (NIR) spectroscopy, coupled with multivariate analysis, has been used to predict the wood properties of sawn lumber, whose diffuse reflection spectra were acquired under moving conditions (30 m/min). Models predicting for bending strength (Fb), modulus of elasticity in bending (Eb), dynamic modulus of elasticity (Efr), air-dried wood density (DEN), and moisture content (MC) were developed using the partial least squares (PLS) analysis. For all wood properties, calibration models showed relative strong relationships between laboratory-measured and NIR-predicted values with coefficients of determination ranging from 0.55 to 0.80. The vector of regression coefficient revealed the important explanatory variables included in each model. It was concluded that NIR spectroscopy could be applied to on-line grading of lumber quality.
AB - Near-infrared (NIR) spectroscopy, coupled with multivariate analysis, has been used to predict the wood properties of sawn lumber, whose diffuse reflection spectra were acquired under moving conditions (30 m/min). Models predicting for bending strength (Fb), modulus of elasticity in bending (Eb), dynamic modulus of elasticity (Efr), air-dried wood density (DEN), and moisture content (MC) were developed using the partial least squares (PLS) analysis. For all wood properties, calibration models showed relative strong relationships between laboratory-measured and NIR-predicted values with coefficients of determination ranging from 0.55 to 0.80. The vector of regression coefficient revealed the important explanatory variables included in each model. It was concluded that NIR spectroscopy could be applied to on-line grading of lumber quality.
KW - Multivariate analysis
KW - Near infrared spectroscopy
KW - Nondestructive test
KW - Stress grading
UR - https://www.scopus.com/pages/publications/84870455991
M3 - Conference contribution
AN - SCOPUS:84870455991
SN - 9781622761753
T3 - 11th World Conference on Timber Engineering 2010, WCTE 2010
SP - 1538
EP - 1542
BT - 11th World Conference on Timber Engineering 2010, WCTE 2010
T2 - 11th World Conference on Timber Engineering 2010, WCTE 2010
Y2 - 20 June 2010 through 24 June 2010
ER -