Study on the Correlation between Mechanical Characteristics and Non-destructive Testing of Stress Wave in Poplar Logs

摘要

The testing experiments to healthy poplar logs samplings whose diameter scopes were in 5-11cm and the length respectively were 10cm and 30cm were conducted by using Arbotom stress wave testing instrument and universal mechanics testing machine. The relationships between dynamic modulus of elasticity of stress wave and compression and bending properties were all studied in the poplar logs samplings. The results indicated that, in the 30cm poplar log samplings, the dynamic modulus of elasticity of stress wave had good linear correlation with the four indexes. However, in the 10cm samplings, the situation was a little different and the dynamic modulus of elasticity didn't have good linear correlation with MOE in compression parallel to grain and compression strength.