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| Title | Publication | Publish Year |
|---|---|---|
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Stress Wave Attenuation as An Indicator of Lumber Strength
Longitudinal stress waves were induced in Douglas-fir 1 by 4s selected to have various degrees of slope of grain. The amplitude of the stress waves was measured indirectly by a […]
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Forest Products Journal | 1977 |
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Stress Wave Speed and MOE of Sweetgum Ranging from 150 to 15 Percent MC
Stress-wave techniques, considered as alternate means to machine grade lumber, have been studied to some extent with dry lumber but not with green lumber. A set of clear sweetgum sapwood […]
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Forest Products Journal | 1975 |
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Structural condition assessment of in-service wood
It is important to periodically assess the condition of wood in service. This month’s feature describes some techniques currently being used to evaluate wood in structures and discusses some effective […]
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Forest Products Journal | 2006 |
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Structural Property Estimation from Density Samples for Western Woods
To improve the reliability of structural property information on a continuing basis for engineering applications of today’s wood, a sampling system is needed which incorporates modern statistical techniques, yet in […]
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Forest Products Journal | 1965 |
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Surface roughness analysis of wood composites: a stylus method
The surface roughness of hardboard and medium density fiberboard (MDF) were measured with a fine stylus technique. These composite samples were evaluated for surface roughness as well as surface stability […]
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Forest Products Journal | 1996 |
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Surface Roughness of Wood-Based Panels After Aging
The surface roughness of painted and unpainted wood-based panels has been measured with a fine, 3-pm stylus over a panel length of 5 cm. In this way both micro- and […]
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Forest Products Journal | 1983 |
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Survey of Factors Affecting Strength Tests of Glue Joints
A survey of conventional glueline test techniques showed that all of the methods are subject to stress concentrations initiated during testing, and failure in a test specimen may be by […]
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Forest Products Journal | 1955 |
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Tensile-strength incidence mechanism of structural finger-jointed laminae
The mechanism of tensile-strength incidence of structural finger-jointed laminae was investigated. Tensile Young?s moduli and strains at the finger joint (FJ) and the solid members near the FJ were measured […]
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Forest Products Journal | 2003 |
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Tension, Compression, and Shear Properties of Waferboard from Small-Specimen Tests
Tension, compression, and shear properties of three waferboards and one additional phenolic-bonded flakeboard, all commercial products, were determined by test methods in ASTM Standards D 1037 and D 3044. Tensile […]
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Forest Products Journal | 1986 |
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Termite Bioassays Show Greatly Varied Tolerances to Insecticide in Bait Blocks
In laboratory tests, termite tolerance to mirex increased 20-to 40-fold when termites exposed to insecticide transferred to nontoxic diet and had social support from nonexposed termites. Because natural termite colonies […]
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Forest Products Journal | 1979 |
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Test for Measuring Formaldehyde Emission from Formaldehyde Resin Bonded Particleboards and Plywood
The amount of free formaldehyde in particleboard and plywood was quantitatively determined by heating, under vacuum, a sample of ground board and absorbing the liberated in formaldehyde in water. The […]
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Forest Products Journal | 1972 |
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Test method for assessing resistance of pine lumber and waferboard to mold
Methods are needed to evaluate the ability of framing lumber and composite construction materials to withstand mold growth when they are exposed to rain between manufacture and installation. A laboratory-controlled […]
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Forest Products Journal | 2005 |
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Testing and Evaluating Procedures for Building Boards
A need for a composite test procedure for all types of building board products–insulation board, hardboard, and particleboard–is evident because of the expanded uses and the additional classes or types […]
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Forest Products Journal | 1956 |
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Testing Nails for Ductility and Toughness
Ductility and toughness of nails influence their drivability as well as their lateral load transmission in wood. Determination of nail ductility and toughness has been simplified by the introduction of […]
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Forest Products Journal | 1978 |
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Testing of Finishing Materials for Woodwork
Final evaluation of any material is by necessity a combination of the operators’ opinions and the results obtained with standardized equipment. Testing of finishing materials to be used on Singer […]
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Forest Products Journal | 1954 |
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Testing Wood Doors for Stability and Strength
Methods of testing doors are of three general types: stability tests, strength tests, and impact tests. The stability tests include exposure to changing moisture conditions and exposure to differential moisture […]
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Forest Products Journal | 1952 |
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The Cyclical Exposure Test as a Tool in Laminating Quality Control
The development of cyclical exposure tests at the Puget Sound Naval Shipyard for evaluating the performance of laminated material (especially white oak) is reviewed for the period 1946-1954. Initially, a […]
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Forest Products Journal | 1954 |
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The Development of the Glueline-Cleavage Test
ASTM test methods gave inconsistent results when Douglas-fir veneer was tested at the Vancouver Forest Products Laboratory. New test methods gave promising results. The coefficient of variation was reduced from […]
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Forest Products Journal | 1952 |
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The Effects of Temperature and Humidity on Formaldehyde Emission from UF-Bonded Boards: A Literature Critique
An analysis has been conducted on available data related to temperature and humidity effects on formaldehyde concentrations that are produced by emission from particleboard and hardwood plywood paneling. Temperature changes […]
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Forest Products Journal | 1985 |
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The Flexural Properties of Eastern Oak Pallet Lumber
Bending properties of cut-to-size pallet lumber are a critical input in the design of wood pallets. Because of the size and importance of the pallet industry, these properties can have […]
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Forest Products Journal | 1986 |
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The Influence of Production Variables on Quality of Southern Pine Plywood
Laboratory plywood panels, 3/8 inch by 1 foot by 1 foot, were made using a variety of conditions and a standard phenolic adhesive consisting of 25.3 percent resin solids and […]
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Forest Products Journal | 1970 |
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The Influence of Temperature on Creep in Wood
Creep and creep recovery tests in bending were conducted on eastern white pine, western redcedar, and sugar maple. Six specimens from each species were all side-matched and machined to 1 […]
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Forest Products Journal | 1962 |
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The influence of testing and size variables on the tensile strength of machine stress-rated lumber
In 1981, the Frank Lumber Company and the West Coast Lumber Inspection Bureau initiated a series of studies of variables influencing the assessment of the tensile strength of machine stress-rated […]
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Forest Products Journal | 1993 |
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The Measurement of Surface Strength in Particleboard
The work demonstrates two techniques for measuring surface strength of particleboard. One of these is a technique in which a circular metal cylinder is glued to the surface of the […]
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Forest Products Journal | 1970 |
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The Minnesota Shear Test
The Minnesota Shear Test (MST) enables quick, simple, and quantitative determination of the wet or dry internal strength of the weakest plane of 0.25 inch (6.4 mm) and thicker wood […]
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Forest Products Journal | 1983 |