Measuring and testing – Vibration – By mechanical waves
Patent
1993-07-19
1995-06-27
Williams, Hezron E.
Measuring and testing
Vibration
By mechanical waves
73632, G01N 2928
Patent
active
054269806
ABSTRACT:
A soft membrane booted transducer for performing ultrasonic inspections of parts and components that have rough sound beam entry surfaces. These rough surfaces may be in the form of as-welded unprepared overlays, cladded components, as-cast parts, or other unprepared surfaces that tend to prohibit, or prevent, sound entry from normal, smooth, hard-surfaced transducer contacting shoes made from Lucite or similar materials. The booted ultrasonic transducer has a soft membrane boot for coupling the transducer to an uneven or rough sound beam entry surface. The soft membrane is made of a flexible material capable of transmitting ultrasonic waves. When pressed into contact with the uneven or rough surface of the object being inspected, the membrane flexes to generally conform to the shape of the contacted surface. Flexing of the membrane eliminates or reduces air gaps between the transducer and the object surface, thereby increasing the ultrasonic coupling between the piezoelectric element and the object.
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Drawing of Mark IV Oil-Filled Ultrasonic Search Unit, no date supplied.
General Electric Company
McGinness James E.
Oda Christine K.
Williams Hezron E.
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