Clad ultrasonic waveguides with reduced trailing echoes
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United States of America Patent
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Oct 27, 1998
Grant Date -
N/A
app pub date -
May 28, 1996
filing date -
May 28, 1996
priority date (Note) -
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Abstract
Ultrasonic buffer rods are useful for on-line process control of industrial material processes at elevated temperatures. In order to increase the signal-to-noise ratio in the reflected ultrasonic waves revealing the information of the condition of the materials being processed, clad ultrasonic waveguides consisting of a tapered or uniform core and a cladding are proposed. The core is made of a low ultrasonic loss material. Preferably, the cladding has a higher ultrasonic velocity than the core. The cladding may be thermally sprayed over the core. The waveguides are simple, rugged, machinable and operable at elevated temperatures.
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