UBC Undergraduate Research

An Investigation into the Physical and Chemical Properties of Wood through Static and Dynamic Bending Lin, Howard; Xie, Siyuan Leo


The effects of solvent exposure and grain orientation on the elastic modulus of wood were examined using static loading and measurement of dynamic fundamental frequencies according to the Euler-Bernoulli beam theory. The rigidity of wood was found to depend strongly on the direction of the grains. It is proposed that the structure of the beam is primarily maintained by hydrogen-bonding between wood cells and it is this geometry of the cells with respect to the intercellular forces that explains the difference in elastic moduli between different grain orientations.

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