Title: Hydrodynamic ultrasonic probe

Abstract: An improved probe for in-service ultrasonic inspection of long lengths of a workpiece, such as small diameter tubing from the interior. The improved probe utilizes a conventional transducer or transducers configured to inspect the tubing for flaws and/or wall thickness variations. The probe utilizes a hydraulic technique, in place of the conventional mechanical guides or bushings, which allows the probe to move rectilinearly or rotationally while preventing cocking thereof in the tube and provides damping vibration of the probe. The probe thus has lower friction and higher inspection speed than presently known probes.

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Inventors: Day, Robert A. (Livermore, CA, US)
Conti, Armond E. (San Jose, CA, US)

Application Number: 957620
Filing Date: 1978-11-03
Publication_date: 1980-02-26
Assignee: The United States of America as represented by the United States (Washington, DC)
Primary Class(es): 73/623
Other Classes:
US Patent Ref:

2995925	Aug, 1961	Worlton	73/623.
3417609	Dec, 1968	Grahm	73/623.
3810384	May, 1974	Evans	73/623.

Other Refs:
Primary Examiner: Ciarlante, Anthony V.
Assistant Examiner:
Attorney: Lupo; R. V., Gaither; Roger S., Carnahan; L. E.