Author: Diyana Mladenova
- STUDY ON THE HARDNESS OF OAK WOOD
The hardness is among the most important properties of wood. It is closely correlated with the density and mechanical properties. Moreover, it determines the processing of wood. The scope of the stem varies greatly by determination is often very difficult to define.
This work considers the hardness of oak wood, sourced from different habitats in the country and its distribution in the radius of the stem. The influence of age, the width of the annual ring, habitat and altitude are also considered.
Keywords: wood, oak, hardness, annual ring
- HARDNESS OF WOOD IN SOME OAK SPECIES
The oaks are one of the most important species for our Dendroflora. This study of hardness complements the knowledge of the properties of their wood. Wood is a non-homogeneous material and its properties differ in different parts of the stem. Hardness is a property that is directly related to the construction of the wood. That is why knowledge of this property will be an important step towards more rational use of oak wood.
The work presents data on the hardness of the wood of pedunculate oak (summer) and sessile oak (winter oak). The influence of the habitat and the radius of the stem is examined. In order to compare the individual samples, the qualitative hardness coefficient was determined.
Keywords: wood, oak, hardness, sessile oak, pedunculate oak
- STUDY ON THE DENSITY OF OAK WOOD
The density is assumed to be a complex parameter of quality wood. On the one hand, it depends on the anatomical structure of the wood, the other largely determine all other mechanical properties and influence the processing and use of wood.
Work considered the density of oak wood, sourced from different habitats in the country and its distribution in the radius of the stem. The influence of age, the width of the annual ring, habitat and altitude.
Keywords: wood, oak, density, annual ring