Wood Science and Technology
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Modeling of heat and mass transfer during high temperature treatment of aspen
Wood Science and Technology - Tập 40 - Trang 371-391 - 2006
A three-dimensional and unsteady-state mathematical model, which accounts for simultaneous heat and mass transfer taking place during the high temperature treatment of wood, has been developed. It was validated by comparing the predictions with the experimental data. In the model, the coupled heat and mass transfer equations proposed by Luikov are solved, and the temperature and moisture content p...... hiện toàn bộ
Mechano-sorptive effects in wooden material
Wood Science and Technology - Tập 28 - Trang 437-449 - 1994
The effects on wood of simultaneous mechanical and moisture loading are studied. In order to clarify the mechano-sorptive behaviour of wood, a review of different phenomena presented in the literature is included. Based on this review a constitutive model is proposed for the case of uniaxial stress in the longitudinal direction. The validity of the model is checked independently against test resul...... hiện toàn bộ
Relationship between apparent modulus of elasticity, gage length, and tensile strength of lumber
Wood Science and Technology - Tập 10 - Trang 273-291 - 1976
The percent explained variation (r2) of tensile strength (T) of dimension lumber can be accounted for primarily by apparent modulus of elasticity (Ea). Tensile strength ratio, a good index of T of structural lumber, and Ea are both dependent on relative knot size, making T a function of Ea. This theoretical relationship helps to increase r2 when T is regressed on Ea and gives the “cause and effect...... hiện toàn bộ
Automated image processing for quantification of blue-stain discolouration of Norway spruce wood
Wood Science and Technology - Tập 45 - Trang 331-337 - 2010
Bioincising is a promising method for enhancing liquid uptake (e.g. preservatives or wood-modification agents) in refractory wood. Incubation with the white-rot fungus, Physisporinus vitreus, which selectively degrades pit membranes, results in deeper and more homogeneous penetration of liquids. Conventional methods of assessing the degree of fungal discolouration of wood after treatment with pres...... hiện toàn bộ
Evaluation of the arrangement of wood strands at the surface of OSB by image analysis
Wood Science and Technology - Tập 36 - Trang 93-99 - 2002
The objective of this paper is to evaluate the arrangement of wood strands at the surface of oriented strand board (OSB) by image analysis. Two-dimensional image analysis enables the number of strands and the area of each strand to be computed. In addition, the fiber direction of each strand may be measured manually by recording the acute angle between the fiber direction and the longitudinal axi...... hiện toàn bộ
Oak particles size effects on viscous-elastic properties of wood polyester resin composite submitted to ultraviolet radiation
Wood Science and Technology - Tập 52 Số 2 - Trang 365-382 - 2018
Dimensional instability of cement bonded particleboard: Modelling CBPB as a composite of two materials
Wood Science and Technology - Tập 37 Số 5 - Trang 373-383 - 2004
Simulation of a real-time process adaptation in the manufacture of high-density fibreboards using multivariate regression analysis and feedforward control
Wood Science and Technology - - 2013
The industrial manufacturing of wood-based panels has become a highly technological process, where all parameters have to be perfectly adjusted to manufacture products of high quality. However, variations caused by differing wood characteristics as well as variations of single process parameters can cause out-of-control events. These undesirable events can be diminished by monitoring and controlli...... hiện toàn bộ
Modification of wood with silicon compounds. inorganic silicon compounds and sol-gel systems: a review
Wood Science and Technology - Tập 37 - Trang 339-348 - 2004
This review describes the treatment of wood with various inorganic silicon compounds. Among these compounds silicofluorides represent one of the long-known classes of wood preservatives based on silicon. Data on an organic fluorosilicon compound (“silafluofen”) are additionally presented. The mode of action of these fluorides is based on their biocidal action. “Water glass”, an alkali silicate, wa...... hiện toàn bộ
Variation of measured cross-sectional cell dimensions and calculated water vapor permeability across a single growth ring of spruce wood
Wood Science and Technology - Tập 46 - Trang 827-840 - 2011
A statistical study of the cell dimensions in a growth ring of spruce along the radial and tangential directions is performed. The data are used to study the variation of the cell vapor permeability in the growth ring. Studying cell rows within one growth ring, the frequency distributions of the cell wall thickness in the radial direction and of the lumen dimension in the tangential direction are ...... hiện toàn bộ
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