Measuring and testing – Vibration – By mechanical waves
Patent
1994-12-23
1996-01-02
Williams, Hezron E.
Measuring and testing
Vibration
By mechanical waves
73159, 73617, G01N 2924, G01N 2928
Patent
active
054798256
ABSTRACT:
Improved ultrasonic energy transducers each include a material contacting member secured to a piezoelectric element at an interface region between oppositely operated first and second regions of the piezoelectric element. The material contacting member intensifies and amplifies movement of the interface region as the first and second regions of the piezoelectric element operate in a push-pull mode relative to the interface region. The first and second regions of the piezoelectric element can be electrically driven to move the material contacting member for transmission of ultrasonic energy or mechanically driven by the material contacting member for receipt of ultrasonic energy. A variety of piezoelectric elements can be used in the improved transducers including, for example, generally rectangular bars and discs segmented into two or more portions. A variety of material contacting members can also be used including, for example, a cylindrical stud and a more narrow dowel.
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Pankonin Bradley M.
Williams Paul
ABB Industrial Systems Inc.
Finley Rose M.
Williams Hezron E.
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