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Effect of grain angle on shear strength of Douglas-fir wood
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Rakesh Gupta
Published/Copyright:
March 21, 2012
Abstract
The effect of grain angle (GA) on shear strength of Douglas-fir has been evaluated. Shear block specimens with a GA varying from 0 to 90° was loaded in the shear plane, resulting in failure mode transitioning from parallel to grain shear to rolling shear. As expected, shear strength decreased as the GA increased from 0° to 90°. A root-mean-square equation was found to be suitable to predict the relationship between GA and shear strength. Traditional Hankinson formula and the Tsai-Wu criteria were less effective with this regard.
Received: 2011-2-23
Accepted: 2012-2-16
Published Online: 2012-03-21
Published in Print: 2012-07-01
©2012 by Walter de Gruyter Berlin Boston
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Keywords for this article
mechanical properties;
rolling shear;
timber mechanics;
wood design;
wood technology.
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- Extracting value-added products before pulping: Hemicellulosic ethanol from Eucalyptus globulus wood
- Effect of various pulp properties on the solubility of cellulose in sodium hydroxide solutions
- Dissolution and acetylation of ball-milled birch (Betula platyphylla) and bamboo (Phyllostachys nigra) in the ionic liquid [Bmim]Cl for HSQC NMR analysis
- Study of thin films of kraft lignin and two DHPs by means of single-molecule force spectroscopy (SMFS)
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