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| Title | Publication | Publish Year |
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The Regulation of Aeration in Wood Soil Contact Culture Technique
The aerobic nature of most wood-destroying fungi requires suitable ventilation within the culture jars to permit passage of the gaseous products accompanying the decay process. By placing a glass vent-tube […]
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Forest Products Journal | 1953 |
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The relationship between stress wave transmission characteristics and the compressive strength of biologically degraded wood
Wood in service can be attacked by a variety of biological organisms. Such organisms feed on the constituents of wood, thereby reducing its ability to carry load and serve in […]
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Forest Products Journal | 1997 |
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The use of the pilodyn for assessing outerwood density in New Zealand radiata pine
The pilodyn, which drives a spring-loaded pin with a known force into exposed wood, was used to estimate outerwood density. The pilodyn was calibrated against x-ray densitometer values of increment […]
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Forest Products Journal | 1996 |
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Three Tests on Nailhead Performance in Wood-Base Panels
The effectiveness of three test methods in determining nail-head performance values in four commercial wood-base products, using two types of nails, was determined. There was no significant difference between two […]
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Forest Products Journal | 1974 |
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Through-thickness ultrasonic characterization of wood and agricultural fiber composites
Direct contact ultrasonic transmission (UT) method was used to differentiate the effects of particle size on panel properties for oriented strandboard (OSB), redcedar particleboard (RCPB), and bagasse particleboard (BAPB). The […]
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Forest Products Journal | 2004 |
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Torsion Shear Test for Particleboard Adapted to a Universal Testing Machine
The internal torsion shear strengths of twenty-five comercial and laboratory particleboards were determined with a torsion apparatus designed, built, and adapted to a universal testing machine. The torsion values obtained […]
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Forest Products Journal | 1971 |
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Transformer Type Strain Gage for Wood
A linear variable differential transform, LVDT, was evaluated as a strain gage for wood. The LVDT gage was found to be far superior to an 8-inch extensometer utilizing 0.0001 inch […]
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Forest Products Journal | 1958 |
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Transverse vibration tests for prediction of stiffness and strength properties of full size Eucalyptus grandis
The current method for determining the modulus of elasticity (MOE) of South African timber is contained in the South African standard SABS 1122-1994 (13). The European standard method for determining […]
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Forest Products Journal | 2002 |
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Treatment of Wood to Reduce Combustibility
The treatment of wood to reduce combustibility and thus gain increased acceptance in the construction field plays a part in the promotion of the use of wood. A great deal […]
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Forest Products Journal | 1953 |
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Trends in Building Codes
In tests of fires started in unfurnished full-scale rooms, the Factory Mutual Laboratories found in 1950 that wall finishes (wood) ignited but, in most cases, when the igniting fire had […]
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Forest Products Journal | 1966 |
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Two accelerated-aging tests for wood-based panels
Two simplified accelerated-aging exposures were evaluated as possible alternatives to the current six-cycle test in ASTM D 1037. The exposures consisted of four cycles of alternate hot-water soaring and ovendrying. […]
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Forest Products Journal | 1993 |
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Two procedural aspects of measuring formaldehyde release from wood panel products using the large chamber
The ASTM E 1333 large chamber test method is the primary method for determining formaldehyde emission potential from urea-formaldehyde bonded wood panel products. The precision of the large chamber air […]
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Forest Products Journal | 1998 |
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Two-Day Mold Testing Using a Contact Agar Method
Spore germination of four mold and sapstain fungi on small agar disks in diffusion contact with preservative-treated plywood was used to rank performance of seven fungicides. Results obtained in 48 […]
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Forest Products Journal | 1979 |
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Ultrasonic inspection of large bridge timbers
Timber bridges are susceptible to attack from wood decay fungi. Significant losses in wood material properties are associated with increasing decay. Therefore, timber bridges must be monitored for decay in […]
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Forest Products Journal | 2002 |
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Uniform Standards Essential to the Advancement of the Hardboard Industry
When a number of manufacturers produce similar commodities by a variety of techniques, the need for uniform standards is most urgent if the prospective user is to have confidence in […]
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Forest Products Journal | 1952 |
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User-friendly programming for a computerized laboratory press
A computerized press control and data gathering program developed at the USDA Forest Service, Forest Products Laboratory, allows researchers to manipulate small changes in the pressing variables for wood-based composites […]
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Forest Products Journal | 1990 |
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Using Gamma Radiation to Measure Density Gradients in Reconstituted Wood Products
The processing of wood particle, fiber, and flake products by pressing of a felted mat generally results in a density gradient from one surface of the product to the other. […]
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Forest Products Journal | 1986 |
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Vacuum Loading Technique Increases Accuracy of Pallet Testing
A method for testing pallets involving load applied by means of a vacuum rather than by air bags or dead weights is described. The method is indicated to be both […]
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Forest Products Journal | 1977 |
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Vacuum-pressure soak plus ovendry as an accelerated-aging test for wood-based panel products
Vacuum-pressure soak (VPS) at room temperature was investigated as an alternative to the hot water soak and steaming steps in the current ASTM D 1037 accelerated-aging tests. Oriented strandboard, flakeboard, […]
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Forest Products Journal | 1996 |
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Variability of Smoke Particulate Concentrations in the NBS Smoke Chamber
We studied small-scale smoke yield measurements of 9.5-mm-thick three-ply Douglas-fir plywood in the Aminco-NBS smoke density chamber to determine smoke distribution patterns and observed the variability of these measurements. These […]
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Forest Products Journal | 1986 |
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Variation in the properties of medium density fiberboard
Medium density fiberboard (MDF), 1.5 inches thick, is specified by the American National Standards Institute Standard B175.1 as the test medium for the measurement of kickback response of gasoline-powered chain […]
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Forest Products Journal | 1989 |
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Vibration testing of timber floor systems
Inspection and evaluation of existing timber structures have been limited to individual structural members. The objective of this study was to conduct a pilot investigation on the use of transverse […]
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Forest Products Journal | 2002 |
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Video Wood-Failure Evaluator
Describes an electronic tool developed to assist an estimator of wood failure on plywood shear specimens and compares the accuracy and reproducibility of this video method with those of the […]
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Forest Products Journal | 1973 |
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Visual Method for Measuring Formaldehyde Release from Resin Bonded Boards
An alkaline solution of purpald (4-amino-3-hydrazino-5-mercapto-1,2,4-triazole) reacts with formaldehyde and turns purple. The intensity of the color produced can be used to measure the release of formaldehyde from particle board […]
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Forest Products Journal | 1974 |
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Volumetric Method of Determining Dry Weight of Green Aspen Bolts
The primary purpose of this study was to establish factors for converting the green volume of peeled and unpeeled aspen bolts into estimates of the ovendry weight of wood substance […]
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Forest Products Journal | 1959 |