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Books Books 1 - 10 of about 13 related to Effect of Duration and Rate of Loading on Strength of Wood and Wood-based ....    

Effects of type of testing equipment and specimen size on toughness of wood

C. C. Gerhards, Forest Products Laboratory (U.S.) - Wood - 1968 - 12 pages
Combining results of several studies shows that toughness values determined with the FPL toughness testing machine average higher than those for comparable material determined ...
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Characterization of physical and mechanical properties of 2 by 4 truss lumber

C. C. Gerhards, Forest Products Laboratory (U.S.) - Architecture - 1983 - 24 pages
This paper summarizes data on dimensional characteristics, optimum grade, and regressions of strength on modulus of elasticity and grade class (a function of strength ratio) of ...
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Evolution of tensile design stresses for lumber

W. L. Galligan, C. C. Gerhards, Robert L. Ethington, Forest Products Laboratory (U.S.) - Technology & Engineering - 1979 - 9 pages
Until approximately 1965, allowable design stresses for lumber in tension were taken as equal to those assigned for bending. As interest in tensile properties increased ...
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Effect of cross grain on stress waves in lumber

C. C. Gerhards, Forest Products Laboratory (U.S.) - House & Home - 1980 - 9 pages
This report evaluates the effect of cross grain on the transit time of longitudinal compression stress waves in Douglas-fir 2 x 8 lumber. Results should aid development of ...
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Effects of knots on stress waves in lumber

C. C. Gerhards, Forest Products Laboratory (U.S.) - Science - 1982 - 28 pages
Although stress waves have been proposed as a means for rapid machine stress rating of lumber, the concept has seen only limited commercial application. A better understanding ...
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Limited evaluation of physical and mechanical properties of Nepal alder ...

C. C. Gerhards, Forest Products Laboratory (U.S.) - House & Home - 1964 - 4 pages
Nepal alder (Alnus nepalensis) grown in Hawaii was evaluated for shrinkage, strength in bending, and hardness. It is compared to the same species grown in India and to such ...
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Physical and mechanical properties of "Norfolk-Island-pine" grown in Hawaii

C. C. Gerhards, Forest Products Laboratory (U.S.) - Norfolk Island pine - 1967 - 8 pages
The physical and mechanical properties of the wood species 'Norfolk-Island-pine' grown in Hawaii are presented. Evaluations of those properties show that the wood is moderately ...
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