Wear plate for piezoelectric ultrasonic transducer arrays
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United States of America Patent
Stats
-
Jul 8, 1980
Grant Date -
N/A
app pub date -
Nov 8, 1978
filing date -
Nov 8, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A linear transducer array for 90.degree. or other wide angle sector scans is covered by a body contacting wear plate made of a material such as filled silicone rubber or polyurethane epoxy in which the longitudinal sound velocity is equal to or less than that in the body and in which the acoustic impedance for longitudinal sound waves is approximately equal to that of the body. Refraction, if it occurs, enhances the field of view without reducing the transmission of acoustic energy. The wear plate provides mechanical support for a fragile front surface matched array.
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