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Evaluation of Impact Strength and Bending Strength of Thermally Modified Beech Wood with the False Heartwood
 Vykoukal, Jakub ; Zeidler, Aleš (advisor) ; Procházka, Jiří (referee)
This bachelor thesis examines the influence of thermal modification on beech wood, with taking into account the difference of properties of healthy samples and samples with false heartwood. Thermal modification took place in two stages (165 ° C and 210 ° C), which are together with the untreated set tried on impact strength, bending strength (static modulus of elasticity) and the dynamic modulus of elasticity. The additional measured properties were density, equilibrium moisture and change of color spectrum. The first level of treatment slightly increased the bending strength and the static modulus of elasticity, residue tests, however, showed a negative effect on the other measured properties of the heat treated samples. It has been shown also that false heartwood has a clearly negative effect on the measured mechanical properties.
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2 Vykoukal, Jan
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