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| Title | Publication | Publish Year |
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Discolorations of hem-fir wood: a review of the mechanisms
The natural appearance of many wood species can be affected by a variety of undesirable “non-microbial” discolorations. This study reviews and summarizes the current knowledge of the causes of discolorations […]
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Forest Products Journal | 1994 |
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Distortions of Wood: Drying with and Without Restraint
Distortions of wood deduced from pure geometrical considerations were compared with those obtained experimentally. The samples used were turned wood cylinders (1/4-inch thick and 6-1/4-inches long) from Sitka spruce grown […]
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Forest Products Journal | 1961 |
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Distribution of Extractives in Solvent Seasoned Redwood Lumber
In redwood boards that were solvent seasoned, the least amount of water solubles was present in the outer layer, with larger quantities in the intermediate layer and inner core. The […]
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Forest Products Journal | 1961 |
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Distribution of Hot-Water Soluble Material in Cell Walls and Cavities of Redwood
Redwood is noted for its relatively good dimensional stability. This property is ascribed to the presence of certain extractives in the redwood. Generally, extractives may be present within the cell […]
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Forest Products Journal | 1961 |
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Double Application of Paraquat for Production of Lightwood with High Oleoresin Content
Slash pines were treated with two applications of 2 percent paraquat zero, 6, or 12 months apart in an attempt to produce 15 percent rosin content on a green weight […]
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Forest Products Journal | 1982 |
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Douglas-Fir Substitutes for the British Columbia Plywood Industry
The supply of Douglas-fir logs yielding good face veneers is dwindling rapidly in British Columbia. There is no shortage of logs suitable for core veneers. Other conifer species in B.C. […]
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Forest Products Journal | 1950 |
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Douglas-fir veneer: green veneer grades, layup loss, and green veneer and plywood recovery
Production problems faced by plywood manufacturers on a continuing basis are losses in volume from the veneer block to finished panel and recovery of veneer by grade from graded green […]
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Forest Products Journal | 1987 |
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Drying 1-Inch Ponderosa Pine Lumber with a Combination of Microwave Power and Hot Air
This study was a preliminary investigation of the feasibility of drying 1-inch thick ponderosa pine lumber with a combination of 915 MHz microwave energy and convective hot air. Microwave energy […]
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Forest Products Journal | 1971 |
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Drying 40-mm-thick slash pine in 2.5 hours at 200?C
This study examined aspects of the feasibility of drying Pinus elliottii at 200?C. Drying time, degrade due to distortion, modulus of elasticity (MOE), modulus of rupture (MOR), and impact strength […]
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Forest Products Journal | 1995 |
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Drying characteristics of hem-fir squares as affected by species and basic density presorting
Thick hem-fir lumber (101-mm square) was sorted into six groups based on species and basic density. All groups were dried with the same schedule in an experimental kiln. Final moisture […]
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Forest Products Journal | 1996 |
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Drying End Point Determination During High-Temperature Drying
Drying end point for slash pine (Pinus elliottii Engelm. var. elliottii) during high temperature kiln drying can be determined by monitoring core temperature of sample boards. This method has been […]
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Forest Products Journal | 1985 |
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Drying lumber of submerchantable length
Softwood sawmills generate a large quantity of short pieces of lumber due to end trimming. Short pieces might also be generated by cutting the defects out of full-length, low-grade lumber. […]
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Forest Products Journal | 1999 |
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Drying of Prefrozen Redwood . . . Fundamental and Applied Considerations
Freezing significantly improved the subsequent accelerated drying behavior of redwood heartwood. Defects were greatly reduced or eliminated and shrinkage was reduced irrespective of collapse development. Improved drying behavior was obtained […]
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Forest Products Journal | 1968 |
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Drying Resistance of Three Thicknesses of Douglas-Fir Lumber Under Mild and Severe Kiln Schedules
Relations between drying resistance and moisture content were found for 4/4-, 6/4-, and 8/4-inch green Douglas-fir heartwood subjected to mild and severe drying schedules. These relations were curvilinear and varied […]
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Forest Products Journal | 1986 |
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Drying thick western hemlock in a laboratory radio-frequency/vacuum dryer with constant and variable electrode voltage
Drying experiments with western hemlock lumber, 91 mm square in cross section, were carried out in a laboratory radio-frequency/vacuum dryer with two different electrode voltage methods (constant and variable). During […]
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Forest Products Journal | 1994 |
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Dulling of Sawteeth Tipped with a Stellite and Two Cobalt-Cemented Tungsten Carbides
The dulling behavior of three sawtooth tipping materials– a stellite containing 59 percent cobalt and two tungsten-carbide grades containing 6 percent and 18 percent cobalt, respectively– were studied in cutting […]
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Forest Products Journal | 1982 |
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Durability of Adhesives in Plywood: Dry-Heat Effects By Rate-Process Analysis
Douglas-fir and yellow birch plywood specimens bonded with phenol-resorcinol-, melamine-, melamine-urea-, urea-, thermosetting polyvinyl acetate-, and acid-catalyzed phenol- resin adhesives were subjected to dry heat for varying periods of time. […]
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Forest Products Journal | 1975 |
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Durability of CCA B Treated Plywood with Nonconforming Penetration Patterns
Pressure treatment of commercial plywood constructed of western wood species, which subsequently exhibited penetration patterns not meeting industry standards for preservative distribution, caused concern regarding projected use for All Weather […]
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Forest Products Journal | 1982 |
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Durability of Douglas-Fir Heartwood from Coastal and Interior Sources
Heartwood stakes of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco], from the Pacific coast (variety menziesii) and interior (var. glauca) sources, were equally durable after 13 years of contact with soil. Sixteen […]
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Forest Products Journal | 1977 |
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Durability of Exterior Wood Stains
Experimental latex stains have been evaluated in both accelerated and outdoor weathering tests on cedar, redwood, and southern pine. The results show that acrylic latex stains at 20 percent solids […]
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Forest Products Journal | 1977 |
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Durability of heartwood in treated southern pine bulkheads
Many premature failures of southern pine timber bulkheads are attributable to marine borer attack on poorly penetrated heartwood. Incising with a very dense pattern and lengthening the pressure period improved […]
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Forest Products Journal | 1990 |
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Durability of Southeast Asian Hardwood Plywood During Outdoor Exposure
Bond durability of outdoor exposed plywood made with three resins and assembly times and with 16 Southeast Asian hardwood species has been observed for 7-l/2 years. Most species have performed […]
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Forest Products Journal | 1985 |
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Durability of Urea-Formaldehyde Adhesives: Effects of Molar Ratio, Second Urea, and Filler
Relative durabilities were determined for Douglas-fir laminated samples prepared from 16 different urea-formalde hyde resins. Molar ratio ranges of F/U = 2.0 to 1.8 exhibited slower bond deterioration under accelerated […]
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Forest Products Journal | 1973 |
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Durability of Woodworking Glues for Dwellings
This report covers extensive tests made at the Forest Products Laboratory on casein and synthetic resin glues. The suitability of these glues for use in house construction was evaluated. Plywood […]
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Forest Products Journal | 1949 |
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Duration of Load Test for Wet Lumber in Bending
Testing of 210 pieces of 2 x 6 saturated hem-fir was carried out to ascertain the validity of applying the presently employed “duration of load” concept to commercial lumber. It […]
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Forest Products Journal | 1975 |