Title :
Experimental study of focused ultrasonic beams reflected at a fluid-solid interface in the neighborhood of the Rayleigh angle
Author :
Matikas, Theodore E. ; Rousseau, Martine ; Gatignol, Philippe
Author_Institution :
US Air Force Lab., Wright-Patterson AFB, OH, USA
Abstract :
A technique for measuring the lateral and axial displacements of the focal point of an acoustic focused beam reflected at a water-aluminum interface in the neighborhood of the Rayleigh angle incidence is presented together with a qualitative representation of other nonspecular phenomena, based on the cartography of the reflected beam. A study of the feasibility of the experiment and the choice of the transducer is carried out. The results obtained are in agreement with theoretical predictions.<>
Keywords :
aluminium; ultrasonic materials testing; ultrasonic reflection; water; H/sub 2/O-Al; Rayleigh angle; Rayleigh angle incidence; acoustic focused beam; axial displacements; cartography; feasibility; fluid-solid interface; focused ultrasonic beams; nonspecular phenomena; reflected beam; theoretical predictions; Acoustic beams; Acoustic measurements; Acoustic reflection; Acoustic transducers; Error correction; Inorganic materials; Nondestructive testing; Optical reflection; Pressure measurement; Ultrasonic variables measurement;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
