Title: Stress-wave velocity of wood-based panels: effect of moisture, product type, and material direction
Author: Han, Guangping; Wu, Qinglin; Wang, Xiping
Source: Forest products journal. Vol. 56, no. 1 (Jan. 2006): Pages 28-33
Description: The effect of moisture on longitudinal stress-wave velocity (SWV), bending stiffness. and bending strength of commercial oriented strandboard, plywood. particleboard. and southern pine lumber was evaluated. It was shown that the stress-wave verocity decreased in general with increases in panel moisture content (MC). At a given MC level. SWV varied with panel type and test directions. Regression equations relating SWV to MC and bending properties (modulus of elasticity [MOE] and modulus of rupture [MOR] were established for various products. Both MOE and MOR at different MCs can be estimated by observing the speed of propagation of a longitudinal wave. This information is useful for developing moisture correction factors on the stress-wave related properties for wood-based panel products.
Keywords: Lumber, moisture, modulus of elasticity, elasticity, wave mechanics, stress waves, bending, particle board, nondestructive testing, plywood, southern pine, oriented strandboard, OSB, stiffness, bending strength, moisture content
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Han, Guangping; Wu, Qinglin; Wang, Xiping 2006. Stress-wave velocity of wood-based panels: effect of moisture, product type, and material direction. Forest products journal. Vol. 56, no. 1 (Jan. 2006): Pages 28-33
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