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FIFTH CANADIAN CONFERENCE ON NONDESTRUCTIVE ... - IAEA

FIFTH CANADIAN CONFERENCE ON NONDESTRUCTIVE ... - IAEA

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PULSER<br />

IMMERSI<strong>ON</strong><br />

TRANSDUCER<br />

WATER<br />

^CIRCULAR<br />

//ROD<br />

SYNC<br />

RECEIVER<br />

- 122 -<br />

INPUT<br />

OUTPUT<br />

TRIG/EXT<br />

, GATE<br />

GATE<br />

GATED<br />

OUTPUT<br />

DUAL TRACE<br />

EXT. TRIGGER OSCILLOSCOPE<br />

SPECTRUM<br />

ANALYZER<br />

1. Block diagram of the time of flight method and ultrasonic frequency analysis<br />

system.<br />

4 cm.<br />

2 cm.<br />

dem<br />

2 cm<br />

d~0.2.0.3,0.4,0.5,0.6.0.7<br />

2 Brass rods used in experiment.<br />

3. Sound waves diffracted from a circular soatterer. The incident plane<br />

waves are denoted by P.

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