Scanning ultrasonic inspection method and apparatus

Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture

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73 679, G01N 2904

Patent

active

039615235

ABSTRACT:
An arrangement for testing tube-like articles for defects includes scanning a defect detecting device in a helical path about the article; marking, upon receipt of defect indicative signals at the device, a pictorial record of the magnitude and position along the article of defects shown by the received defect indicative signals if they are greater than a predetermined magnitude; subjecting received defect indicative signals greater than said predetermined magnitude to predetermined repetition tests; and marking on the pictorial record the circumferential position about the article of defects shown by the received defect indicative signals if they satisfy the predetermined repetition tests.

REFERENCES:
patent: 3221544 (1965-12-01), Gunkel
patent: 3260105 (1966-07-01), McNulty
patent: 3415110 (1968-12-01), Cowan
patent: 3570279 (1971-03-01), Davies
Cornforth & Lewis, Automatic Inspection of Steel Tubes, Conference: Ultrasonics for Industry 1969, Conference Papers, London, England, Oct. 7-8, 1969.

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