SHOCK RESISTANCE OF SERBIAN SPRUCE WOOD FROM NATURAL AND PLANTED FORESTS

Among other things, the origin of the stand has a great influence on the quality of wood as a material. One of the important indicators of wood quality is the impact strength, because a large number of wood products crack under the influence of dynamic and not under the influence of static load. The aim of this work is to show the values of the impact bending strength (shock resistance) of Serbian spruce wood originating from natural stands and wood originating from planted forests, i.e. plantations. Correlations between impact bending strength and ring width, late wood content and wood density were determined by regression analysis.