Ultrasonic flaw detecting apparatus of electronically scanning t

Details Ultrasonic flaw detecting apparatus of electronically scanning t Ultrasonic flaw detecting apparatus of electronically scanning t

1982-06-18

1984-09-25

Ciarlante, Anthony V.

Measuring and testing

Vibration

By mechanical waves

73628, G01N 2904

Patent

active

044729731

ABSTRACT:
An ultrasonic flaw detecting apparatus of electronically scanning type comprises a plurality of ultrasonic vibrator elements disposed in an arcuate array, wherein groups of N vibrator elements arrayed in the circumferential direction of an object under test are sequentially changed over to one another on one-by-one base to thereby scan an object under test with ultrasonic beams. By controlling phases of pulse signals applied to the individual vibrator elements, a region of focus of the ultrasonic beams is set at a predetermined depth of the object under test. For reception, only the echoes reflected from a predetermined focal range are selectively extracted by providing corresponding window or gate means.

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patent: 4234940 (1980-11-01), Iinuma
patent: 4241610 (1980-12-01), Anderson
patent: 4309906 (1982-01-01), Northeved et al.
patent: 4334432 (1982-06-01), Gill
patent: 4348902 (1982-09-01), Tachita et al.
patent: 4354388 (1982-10-01), Diepers et al.
patent: 4372323 (1983-02-01), Takemura et al.

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