Open AccessMOR and MOE of Serbian Spruce (Picea omorika Pančić/Purkyně) Wood from Natural Stands
Author(s) -
Danijela Petrović,
Vojislav Dukić,
Zdenka Popović,
Nebojša Todorović
Publication year - 2021
Publication title -
drvna industrija
Language(s) - English
Resource type - Journals
eISSN - 1847-1153
pISSN - 0012-6772
DOI - 10.5552/drvind.2021.2028
Subject(s) - young's modulus , composite material , flexural strength , materials science , elasticity (physics) , modulus , bending
The paper presents the results of testing the bending stress of Serbian spruce wood from natural stands. In testing the samples, in addition to the modulus of rupture, the bending stress at the proportionality limit, the ratio between the stress at the proportionality limit and the modulus of rupture as well as the modulus of elasticity of wood were determined. The study included nine trees from natural stands, and a total of 261 samples were tested. Regression analysis determined the dependences of these mechanical properties on the annual ring width, the proportion of late wood and wood density, as well as the dependence of the modulus of elasticity on the modulus of rupture.