Determination of mechanical properties in Teak wood (Tectona Grandis LF)


1Agricultural University of Tirana, Faculty of Forest Sciences, Department of Wood Industry, Tirana

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The Teak (Tectona Grandis LF) is one of the most important timber in the world, and recently imported in Albania, rightly famous for its fine color, a regular and resistant structure. This study consists in the determination of some of the most important mechanical properties of wood such as MOR, compression strength and wood hardness. After the samples were cut it is done the moisture measurement with the electrical method and resulted that the moisture percentage of the samples were 11.4%. It is calculated the density of wood and the mean value resulted 0.58 g/cm3. The tests for the bending strength are done according ISO 13061-3 at the universal test machine and the sample dimensions (number of samples 40) 2 x 2 x 32 cm with random selection. For the compression tests are cutted (from bending samples) samples with sizes 2 x 2 x 4 cm according ISO 13061-17. The hardness of teak wood is calculated according Brinell according the ISO 6506– 1:2005. From all the measurements, resulted that the average compression strength σsh= 44.58 N/mm2. These values compared to the values referred to in the literature, result to be approximate with the values of the compression strength to teak wood originating from the Bali area. The mean value of static bending is MOR =106 MPa, with a st. dev =17.0, that is within reported range. The mean values of Hardness strength are 4,2 kN and 3,80 KN for tangential and radial planes, that are within reported range.

Keywords: Teak; compression strength; MOR, hardness; moisture content.


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