Resonant acoustic emission transducer

Details Resonant acoustic emission transducer Resonant acoustic emission transducer

1994-09-07

1995-09-19

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Signal transducers

310322, 310326, 310336, 73632, 73644, 73587, H04R 1700

Patent

active

054522641

ABSTRACT:
An acoustic emission transducer consists of a resonant detection element (10) which is attached to the base-plate (16) by a small area in comparison to the overall surface area of the resonant detection element (10) where this area of attachment is positioned with respect to the wave motion during the resonance of the resonant detection element (10) so as not to have a significant effect on the resonant detection element (10) other than to physically couple the resonant detection element (10) to the baseplate (16) and introduce elastic waves from the baseplate (16) to the resonant detection element (10) at the desired frequency, while allowing damping materials (24) to be acoustically coupled to the larger part of the resonant detection element surface area to produce a resonant acoustic emission transducer having reproducible characteristics of resonant frequency and rate of damping.

REFERENCES:
patent: 3855847 (1974-12-01), Leschek
patent: 4011472 (1977-03-01), Feng
patent: 4309903 (1982-01-01), Ono
patent: 4782701 (1988-11-01), Proctor, Jr.
patent: 5029474 (1991-07-01), Schulze

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