Curve sawing spruce sawlogs containing sweep can reduce drying distortion when compared with conventional sawing
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چکیده
منابع مشابه
Effect of Curve Sawing on Lumber Recovery and Warp of Short Cherry Logs Containing Sweep
—It has been estimated that approximately one-third of hardwood sawlogs have a significant amount of sweep and that 7 to nearly 40 percent of the yield is lost from logs that have greater than 1 inch of sweep. While decreased yield is important, for hardwood logs the loss of lumber value is likely more significant. A method that produced lumber while accounting for log curvature (sweep) would a...
متن کاملThe effect of curve sawing two-sided cants from small-diameter hardwood sawlogs on lumber and pallet part yields
Curve sawing is a primary log breakdown process that incorporates gang-saw technology to allow two-sided cants from logs with sweep to be cut parallel to the log surface or log axis. Since curve-sawn logs with sweep are cut along the grain, the potential for producing high quality straight-grain lumber and cants increases, and strength, stiffness, and dimensional stability are maximized. Presen...
متن کاملSAWing on Symmetry
In this paper we investigate the behavior of mutation-based evolutionary algorithms on highly symmetric binary constraint satisfaction problems. With empirical methods we study why and when these algorithms perform better under the stepwise adaptive weighting of penalties (SAWing) than under the standard penalty function. We observe that SAWing has little effect when the local optima of the sym...
متن کاملSimulation of Hardwood Log Sawing
Preface Abstract Mathematical modeling computer programs for several hardwood sawing systems have been developed and are described. One has judgment capabilities. Several of the subroutines are common to all of the models. These models are the basis for further research which examines the question of best-grade sawing method in terms of lumber value yield. This Research Paper is one in a series...
متن کاملMathematical Modeling of Curve Sawing Techniques for the Lumber Industry
Curve sawing is a technique used more and more widely in lumber mills in order to obtain more commercially valuable pieces from a given log. It is important to understand and know this technique in order for it to be used optimally. This article deals with the mathematical modeling of curve sawing, so that a module pertaining to curve sawing can be incorporated into the Optitek software, which ...
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ژورنال
عنوان ژورنال: Forestry
سال: 2010
ISSN: 0015-752X,1464-3626
DOI: 10.1093/forestry/cpq026