Forest growth and yield models are critical to supporting decision making in forestry, but often lack considerations for wood properties. The feasibility of simulating wood properties in the context of a Douglas-fir individual tree growth and yield model was evaluated. This assessment explored the effect of predicted sapwood width, stem...
The breaking radii of variously discolored veneers of six different hardwood species were small enough, for most of the discolorations, to indicate that such veneers can be used successfully on members having curved surfaces. When expressed in terms of the minimum radius of curvature attained without fracturing, the breaking radius...
American beech (Fagus grandiflora) is now, and probably will be, increasingly used to replace yellow birch for aircraft construction. Even though it is one of the principal components of the northern hardwood forests of North America, study of the characteristics and properties of its wood has been neglected to the...
Dipping or spraying green lumber with stain control chemicals has been reported recently as valuable for delaying or preventing stain and decay infection in bulk-piled lumber, as well as in the air-seasoning piles for which such treatments were originally developed. But it should be kept in mind that if lumber...
Machine vision is widely used in scientific areas and non-wood using
industries, but the extreme variability of wood has limited its adoption by forest
products industries. However, it is now becoming a key factor in further automation
of the forest products industry. As a very important part of machine vision,...
Raw material costs and limited material availability and quality have created
significant interest in and opportunities for the application of nondestructive
evaluation techniques to improve wood processing technologies. The incentives come
from the desire to 1) manufacture the highest valued product, 2) conserve the
amount of raw material used, 3)...
Ultrasonic wave attenuation and velocity in the transverse direction were used to detect defects in ponderosa pine (Pinus Ponderosa) lumber previously dried from green to 9% moisture content. After ultrasonic testing the boards were visually inspected for defects and classified according to the defects present. An ANOVA with Bonferroni pairwise...