Modeling the tensile mechanical properties of silver birch timber boards

In this paper, the variability of tensile mechanical properties silver birch timber is investigated and models for prediction tension strength stiffness are developed. Through visual inspections non-destructive tests, various related indicators identified. Destructive tests subsequently performed determination stiffness. On each board, strains measured at four localized regions, whereby, knot sections clear wood determined. Variability in strength, stiffness, density, knots, grain angle, annual ring width along with relationships between them. A hierarchical model developed board reduction due to knots. Models cluster according equality inequality information failed specimens, by means censored regression analysis. Results indicate suitable global local predictions timber, given dynamic modulus elasticity, median slope grain, geometries.