The kinetics of the stress relaxation process in Scots pine veneer with regard to the relation between the slope of the stress (In time) curves and the initial effective stress, o-* (applied minus internal stress) are analysed. The data obtained provide further support for the validity of the relation F ~ 0.1 o-~, with F denoting the above slope. This relation has been found to appUy to a large variety of different materials, including metals, polymers, and others. The relaxation process was linear with regard to the initial stress. There was an increase in F in the final stage of the relaxation curves, apparently due to a different mechanism. This had to be taken into account when checking the validity of the above relationship between F and o-~. The measurements relate to radially cut veneer samples at 50% relative humidity.
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