Physical and Mechanical Properties of 40-years Dalbergia odorifera Wood in Wenzhou

In May 2016. 40-year Dalbergia odorifera tree with height of 9.65m in Wenzhou was felled and was placed indoor for 3 years. Determinations were carried out then on its heartwood percentage and wood physical and mechanical properties. The result showed that the biggest heartwood percentage was 45.36% at base, 16.19% of mean rate below 6.5 meters of the trunk. The average air-dry density of heartwood is 0.792 g/cm3, higher than that of sapwood. The average bending strength (MOR), compressive strength parallel to the grain, compression strength perpendicular to the grain (radial loading) and compression strength perpendicular to the grain (tangential loading) were respectively 101.6 MPa, 60.2 MPa, 13.9 MPa and 12.7 MPa, and all of the them had positive relation to wood density. The modulus of elastic (MOE) was 10 620 MPa, with no obvious effect with wood density.