Electronically simulated rotating prism for ultrasonic beam scan

Details Electronically simulated rotating prism for ultrasonic beam scan Electronically simulated rotating prism for ultrasonic beam scan

1980-07-31

1982-04-13

Kreitman, Stephen A.

Measuring and testing

Vibration

By mechanical waves

73626, 73642, G01N 2900

Patent

active

043241409

ABSTRACT:
A method and apparatus are described for electronically scanning a spherily focused beam in a c-scan mode using a spiral path rather than a traditional raster scan pattern. Essential to the technique is an electronically simulated rotating ultrasonic prism operating according to the general electrical input equation V.sub.IN =V.sub.o exp (i.omega..sub.o t+iA cos .OMEGA.t). The technique allows use of a single delay line with simple connections and no requirements of multiple mixing.

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