Length mode piezoelectric ultrasonic transducer for inspection o

Details Length mode piezoelectric ultrasonic transducer for inspection o Length mode piezoelectric ultrasonic transducer for inspection o

1976-06-16

1978-10-31

Budd, Mark O.

Measuring and testing

Vibration

By mechanical waves

73641, 73644, 310326, 310336, H01L 4110

Patent

active

041227255

ABSTRACT:
The transducer is constructed from individual transducer elements arranged in an array and configured to exhibit a predominant, longitudinal mode transversely to the array. The elements are interconnected through thin flexible sheets. Each element is individually damped, and the transducer as a whole is electrically damped through resonance with the clamped capacitance and dissipation. Electrical control permits in-phase operation of all transducer elements or control with preselected phase differences.

REFERENCES:
patent: 2063952 (1936-12-01), Steinberger
patent: 2416337 (1947-02-01), Mason
patent: 2473971 (1949-06-01), Ross
patent: 2508544 (1950-05-01), Shaper
patent: 2943297 (1960-06-01), Steinberger et al.
patent: 3478309 (1969-11-01), Massa, Jr.
patent: 3949349 (1976-04-01), Massa et al.

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