Ultrasonic probe transmitting/receiving an ultrasonic wave of a

Details Ultrasonic probe transmitting/receiving an ultrasonic wave of a Ultrasonic probe transmitting/receiving an ultrasonic wave of a

1997-03-12

1999-04-20

Williams, Hezron

Measuring and testing

Vibration

By mechanical waves

310320, 310322, G01N 2924

Patent

active

058958550

ABSTRACT:
In an ultrasonic inspection apparatus, a piezoelectric element having a first resonant frequency is stuck to a complex resonance member having a second resonant frequency. The second resonant frequency is determined with a conversion in terms of half wavelength. A resultant ultrasonic probe transmits/receives ultrasonic waves of the first resonant frequency and a plurality of other frequencies. In constructing an ultrasonic tomographic image of the object to be inspected from a received signal obtained by using the ultrasonic probe, the imaging frequency is changed according to the depth in the object to be inspected.

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patent: 4870972 (1989-10-01), Maerfeld et al.
patent: 5460595 (1995-10-01), Hall et al.
patent: 5706252 (1998-01-01), LeVerrier et al.

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