Method and apparatus for evaluating the drying properties of un-dried wood

摘要: A method of evaluating un-dried lumber for its propensity to degrade, during drying couples an acoustic pulse and measures the speed propagating through lumber. Preferably, is directed transversely lumber's grain. The pulses may be generated by a calibrated weight striking surface detected at two points on means acoustically coupled accelerometers. timer, triggering similar portions as provides necessary information deduce speed. threshold determined empirically studying samples type them determine their degrade.