Patent ID: 6276209
Filing Date: 2001-08-21
Classification: G01N

Abstract:
A method of detecting anomalies and/or grain variations in a wooden member, comprising the steps of:at least one ultrasonic transmitter applying an ultrasound waveform into a surface of said wooden member so as to generate a multiplicity of ultrasonic waves;measuring at at least one ultrasonic receiver disposed on a surface of said wooden member longitudinal and shear ultrasonic wave components of said multiplicity of ultrasonic waves that have traveled along different paths through said wooden member; andmeasuring variations in said longitudinal and shear ultrasonic wave components of said multiplicity of ultrasonic waves at said at least one receiver as representative of said anomalies and/or grain variations in said wooden member at positions of said wooden member between said ultrasonic transmitter and said at least one ultrasonic receiver.