Title Palengvintos medienos drožlių plokštės mechaninių savybių įvertinimas panaudojant dinaminį nedestrukcinį skersinių virpesių tyrimo metodą /
Translation of Title Mechanical properties evaluation of light weight particle board using the dynamic nondestructive transverse vibrations research method.
Authors Gudauskas, Marius
Full Text Download
Pages 50
Keywords [eng] light weight particle board ; dynamic modulus of elasticity ; transverse vibrations ; resonant frequency
Abstract [eng] In this paper, the influence of a particle board finish to its mechanical properties is analised. 21 samples with dimensions of 500 × 500 × 15 mm were used to conduct this research. Depending on the method of the finish of the material, samples are grouped into four types: S – samples without finish; N – finished with compensatory paper on both sides; L – finished with veneer on the one side and with compensatory paper on the other side; M – finished with veneer on both sides. The mechanical properties of the investigated dynamic non - destructive resonant transverse vibrations of the method of analysis using the original software, according to a special survey methodology. Influence for finished chipboard mechanical properties was evaluated by comparing samples without finishing of the modulus of elasticity (E) and inhibition coefficient (tgδ) values with the values which was set after finish is applied. It was established that the modulus of elasticity of unfinished chipboard is different (21 - 29) % range in two perpendicular directions. The higher modulus of elasticity is the longitudinal direction of chipboard direction. Finishing chipboard samples were considerate into chipboard direction and the direction of the fiber shell. The results show that the L - type samples compared to samples without the finish, in a first direction E increases by 48 %, and in a second direction decreases by 16 %. M - type sample in the first direction E increases by 70 % in the second direction by 13 %. N - type samples compared with samples without finishing first and second direction E increased by 13 % and 20 %. It was found that the samples after the finish is applied tgδ reduced, because of increased stiffness.
Dissertation Institution Kauno technologijos universitetas.
Type Master thesis
Language Lithuanian
Publication date 2015