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| Title | Publication | Publish Year |
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Measurement of Poisson’s ratios for yellow-poplar
Longitudinal/tangential, longitudinal/radial, tangential/radial, and radial/tangential Poisson’s ratios for yellow-poplar (Liriodendron tulipifera) were determined using the white light speckle technique in experimental mechanics called the Digital Image Correlation Technique (DICT). Average […]
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Forest Products Journal | 1997 |
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Measurement of resin and wax distribution on wood flakes
A method was successfully developed and demonstrated for the measurement of distribution parameters of phenol-formaldehyde resins, polymeric diphenylmethane diisocyanate resin, and lignosulfonate-based wax emulsion on the surface of wood flakes. […]
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Forest Products Journal | 1996 |
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Measuring Durability of Adhesive Resins on Paper Substrates
When adhesive bonds between two Douglas fir blocks are broken, the coefficient of variation for the measured bond strengths often approaches 15 percent. Presumably, this reflects the normal variation in […]
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Forest Products Journal | 1974 |
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Measuring General Slope of Grain with the Slope-Of-Grain Indicator
A signal processing system was developed so that the commercial slope-of-grain indicator could effectively measure general slope of grain in dimension lumber. This general slope of grain measurement was not […]
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Forest Products Journal | 1984 |
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Measuring Localized Slope of Grain By Electrical Capacitance
Electrical capacitance was found to be effective for measuring localized slope of grain in lumber. When slope-of-grain measurements were taken incrementally every 1/4 inch along and across the faces of […]
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Forest Products Journal | 1986 |
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Measuring Screw Withdrawal with a Torque Wrench
A torque-to-tension converter was developed to measure screw-withdrawal strength of wood particleboard and plywood with a torque wrench as the measuring instrument. Consistent results were obtained up to a tension […]
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Forest Products Journal | 1972 |
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Measuring the Effectiveness of Water-Repellent Preservatives
Four years of outdoor exposure tests and laboratory tests were conducted at the Forest Products Laboratory to determine which laboratory methods are the most accurate in measuring the effectiveness of […]
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Forest Products Journal | 1961 |
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Mechanical properties of OSB via the five-point bending test
Interlaminar shear properties of wood composites are rarely evaluated because of the difficulty and cost of conducting established procedures set forth by the American Society of Testing and Materials (ASTM). […]
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Forest Products Journal | 1997 |
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Metal-plate connections loaded in combined bending and tension
This study evaluates the load capacity of metal-plate connections under combined bending and axial loads and shows the reduction in connection tensile capacity with an increase in applied moment. Five […]
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Forest Products Journal | 1990 |
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Method for Determining Degree of Cure of Phenolic Resin
A simple and rapid spectrophotometric method is described for measuring the degree of cure of phenol-formaldehyde neat resin or glue made from it. Neat resin is a solution of phenol-formaldehyde […]
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Forest Products Journal | 1969 |
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Method for Measuring Resin Penetration Into Wood
Knowledge of the depth of penetration of resin adhesives into wood may be needed in studying the properties of wood- adhesive joints. A method for measuring penetration depth is described. […]
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Forest Products Journal | 1977 |
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Methodology to Evaluate Racking Resistance of Nailed Walls
A methodology is presented for calculating racking performance of sheathed wood-stud walls. the procedure presented, each sheet of sheathing is replaced by a pair of diagonal springs; the stiffness of […]
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Forest Products Journal | 1982 |
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Methods of Controlling Glue Bond Quality
The application of known quality-control techniques to gluing operations can promote higher and more uniform bond quality, reduction of waste, and more efficient use of labor and equipment. To be […]
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Forest Products Journal | 1951 |
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Methods of Measuring Die-Cutting Shear Strength of Hardboard
The die-cutting shear strength of 1/8-, 1/4-, and 3/8-inch-thick standard and tempered hardboards were evaluated by both the Johnson double-shear tool and the ASTM D 732-46 shear test for plastics. […]
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Forest Products Journal | 1972 |
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Micro-Bioassay of Pentachlorophenol Within Wood Cell Walls
The effects of sub-lethal quantities of pentachlorophenol (PCP) on decay fungal activity in wood were explored for their ability to serve as indicators of PCP distribution in cell walls. Weight-loss […]
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Forest Products Journal | 1975 |
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Microcomputer Program for Random Selection of Board Samples from Stacked Lumber
A sampling procedure for random selection of board samples from stacked lumber in a processing study was programmed for a microcomputer. Array dimensions, sample size per array, and number of […]
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Forest Products Journal | 1984 |
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Microfibril Angle as a Parameter in Timber Quality Assessment
Wood fiber can be considered a two-phase material consisting of cellulose microfibrils embedded in an amorphous matrix. Theoretical work based on this concept shows that the microfibril angle of the […]
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Forest Products Journal | 1969 |
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Middle Ordinate Method Measures Stiffness Variation Within Pieces of Lumber
This paper describes a laboratory instrument capable of detecting stiffness variations within boards over lengthwise regions of less than 2 feet. The magnitude of the lowest stiffness is presumed to […]
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Forest Products Journal | 1975 |
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Migration of iron and manganese into CCA-treated wood in soil contact and the resulting error in leaching results when using energy dispersive x-ray fluorescence spectrometers
In a laboratory leaching study, we found that chromated copper arsenate (CCA) treated wood, which had been exposed to one of five soils examined, unexpectedly appeared to gain significant Cr […]
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Forest Products Journal | 2003 |
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Minimizing Face Checking of Plywood
A study of face checking in cold-pressed Douglas-fir plywood examined the contributing effects of grain (coarse, fine), quality of peel, (lathe check depth), moisture content at time of manufacture, and […]
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Forest Products Journal | 1955 |
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Minnesota Shear Test Reproducibility and Correlation with Internal Bond
The rectangular (MSTR) and parallelogram (MSTP) test specimen configurations give different average shear strengths for an individual panel. This may result from the nonuniformity of the shear-stress distribution in MSTR […]
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Forest Products Journal | 1984 |
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Modeling data from stake tests of waterborne wood preservatives
A number of alternative methods for modeling and interpreting stake test data have been proposed in the literature, but none has gained widespread use by the wood preservation research community. […]
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Forest Products Journal | 1995 |
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Moisture Meters in Industry
Moisture meters of the resistance types and radio frequency types are employed in the lumber and woodworking fields. The meters range in penetration from 1/8-inch to 2 inches. The paint […]
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Forest Products Journal | 1952 |
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Monte-Carlo simulation methods for engineered wood systems
Monte-Carlo simulation is a useful modeling technique for characterizing the reliability of structural components and systems. This paper provides an overview of methods and software for fitting probability distributions and […]
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Forest Products Journal | 1995 |
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NDE of green material with stress waves: preliminary results using dimension lumber
Longitudinal stress wave nondestructive evaluation techniques have proven to be an accurate means of evaluating the quality of wood-based products. Prior research has shown strong relationships between stress wave parameters […]
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Forest Products Journal | 1991 |