Studies on some mechanical wood properties of four fast growing timber species in Khulna region of Bangladesh

摘要

Wood properties of four locally important fast growing timber species (Acacia auriculiformis, Albizia richardiana, Dalbergia sissoo and Samanea samari) occurring in homestead forests of Khulna region of Bangladesh were evaluated. The wood density bothin green and oven-dry condition and mechanical properties i.e. modulus of rupture (MOR), modulus of elasticity (MOE) and screw withdrawal resistance in tangential, radial and end surface showed significant variation among the four species. Wood densityof D. sissoo was greater than that of other three species and followed the order, D. sissoo > A. richardiana > A. auriculiformis > S. saman. All the mechanical properties, however, followed a pattern analogous to that of wood density. Attributes such asdensity in green and oven-dry condition of A. auriculiformis, A. richardiana, D. sissoo were greater than the values reported for teak (Tectonagrandis). However, most of the mechanical properties of the four focal species were inferior to teak.