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Effect of grain angle on shear strength of Douglas-fir wood

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  • 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.
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  • Gupta, Rakesh;Sinha, Arijit; 2012. Effect of grain angle on shear strength of Douglas-fir wood. Holzforschung 66 (5)
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  • 66
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  • 5
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