TURKEY'S NATIVE WOOD SPECIES: PHYSICAL AND MECHANICAL CHARACTERIZATION AND SURFACE ROUGHNESS OF ROWAN (SORBUS AUCUPARIA L.)


Korkut S., Guller B., AYTİN A., KÖK M. Ş.

WOOD RESEARCH, vol.54, no.2, pp.19-30, 2009 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 54 Issue: 2
  • Publication Date: 2009
  • Title of Journal : WOOD RESEARCH
  • Page Numbers: pp.19-30

Abstract

This article aims to familiarize wood expert outside Turkey eith the wood of Rowan by comparing its physical and mechanical properties with some of the world's more recognized hardwood species. The sample trees were harvested from, a mixed oak-hornbeam-rowan stand, north-western part of Turkey. Conventional destructive methods were followed on small clean specimens. Rowan wood's air dry (801 kg.m(-3)), oven dry (737 kg.m(-3)) and basic (635 kg.m(-3)) densities were determined. Fiber saturation point was calculated to be 23.79%; volumetric shrinkage and swelling were found as 15.048% and 18.465%; MOR, MOE, compression strength parallel to grain, impact bending, tensile strength parallel and perpendicular to grain, shear strength, cleavage strength, Janka hardness values (parallel and perpendicular to grain) and surface roughness (Ra) value were determined as 115.571 N.mm(-2), 9843.857 N.mm(-2), 55.027 N.mm(-2), 14.849 J.cm(-2), 120.71 N.mm(-2), 6.187 N.mm(-2), 12.792 N.mm(-2), 0.941 N.mm(-2), 1.416 and 1.159 kN, 7.239 (mu m) respectively. Four main roughness parameters, mean arithmetic deviation of profile (Ra), mean peak-to-valley height (Rz), root mean square roughness (Rq), and maximum roughness (Ry) were used to evaluate the surface characteristics of the specimens.