Research Project
Grant-in-Aid for Challenging Exploratory Research
The ultrasonic wave velocity in wood was measured using non-contact ultrasonic technique. The velocities along three orthotropic directions decreased with increasing moisture content. It is possible to detect the effect of moisture content on the ultrasonic characteristics using non-contact technique. When there were some surface or internal knots and cracks in wood, ultrasonic wave could not be propagated through the wood. This finding suggested thatit is possible to visualize the internal information of wood. The air-coupled ultrasonic is useful non-contact and non-destructive tool to detect the internal information of wood.
All 2013 2012 Other
All Presentation (11 results) (of which Invited: 2 results)
