Quantitative Acoustic Microscopy Based on the Array Approach
Summary
This chapter considers the application of ultrasonic arrays for measurement of the velocity and attenuation of the leaky surface wave and for simultaneous measurement of the bulk wave velocity and the thickness of the plate specimen. In the leaky surface acoustic wave (LSAW) measurement the tilted transducer is usually used for effective generation of the leaky waves since their critical angles are relatively large. For measurement of the bulk wave velocities and the thickness of the plate specimen the incident angles of the probing and reflected waves are relatively small. In comparison with the existing quantitative acoustic microscopy method, mechanical scanning of the transducers is no longer used in the considered technique, and the measurement time is only limited by the time of wave propagation and the speed of the electronic data acquisition system.
Controlled Vocabulary Terms
acoustic microscopy; acoustic wave propagation; acoustic wave velocity; data acquisition; surface acoustic wave devices; ultrasonic arrays