Evaluating the Effect of Finishing Materials on Viscous Elastic Properties of Particle Boards
Keywords:wood particle board, coefficient of damping, resonance vibration, modulus of elasticity, finishing materials
AbstractIn the present research the investigation of finishing wood particle boards is presented. The testing process of wood particle boards involved an original stand. The following three types of finished boards underwent evaluation: finished with veneer on both sides, finished with veneer on the one side and with compensatory paper on the other side, and finished with melamine impregnated paper on both sides. It was established that the first vibrational modes of finished wood particle boards in two perpendicular directions share similarity with modes of the beam-shaped body in terms of their shape. It was obtained that the modulus of elasticity of wood particle boards with different finishing differs by approximately 30 % – 70 % in two perpendicular directions. It was established that when dealing with boards finished with veneer on both sides, with veneer on the one side and compensatory paper on the other side, and with melamine impregnated paper, the value of the modulus of elasticity in two perpendicular directions differs by 1.71, 1.54 and 1.34 times, respectively. It was found that in the case of boards finished with veneer on both sides and with veneer on the one side and compensatory paper on the other side, the coefficient of damping change in two perpendicular directions is less than the one of the board finished with melamine impregnated paper by 25 %.
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