Properties Of Wood

The hardwoods have a specific gravity ranging between 07 to 09 whereas in most of the softwoods it lies below 07.

Properties of wood. It has another interesting property too. They behave exactly the same way in all directions. Sensory characteristics include colour lustre odour taste texture grain figure weight and hardness of wood.

The measured thermal properties value of beech and fir wood samples support those conclusions. If the humidity is relatively high then the wood will absorb more moisture. Sound properties One of these properties is the sound conductivity the index of which is the speed of sound.

Physical properties describe the quantitative characteristics of wood and its behavior to external influences other than applied forces. Increasing the thickness of cell walls of latewood tracheids of pine by 36 and larch by 20 results in an increase in wood density by 18 and 20 respectively. One of the most noticeable properties of wood is that it is a hygroscopic material meaning that it tends to absorb moisture from the air depending on the humidity of its surroundings.

Despite its complex chemical nature wood has excellent properties which lend themselves to human use. These include moderately heavy and hard with medium bending and crushing strength low stiffness and shock resistance moderate decay resistance and good stability in use. Longitudinal radial and tangential.

Works fairly easily although interlocked woolly grain can be troublesome. Glues nails and screws satisfactorily. That is it has unique and independent mechanical properties in the directions of three mutually perpendicular axes.

The mechanical properties are significantly affected by wood density which is directly related to the cell wall thickness. Wood may be described as an orthotropic material. Hardness and strength of wood depend to a great extent on its density.