Acoustic emission transducer package

Details Acoustic emission transducer package Acoustic emission transducer package

1982-07-28

1984-07-24

Myracle, Jerry W.

Measuring and testing

Vibration

By mechanical waves

73654, G01N 2202

Patent

active

044611773

ABSTRACT:
An improved acoustic emission transducer is provided for sensing surface flat frequency response displacement waveforms which transducer is arranged in a packaged form to provide a device of rugged construction which is substantially immune to rough handling, which is smaller in size, and which is easy to use. The arrangement includes a sensor element mounted with an inertia mass comprised of a material substantially matching the impedence of the sensing element, and of substantial size in order to clamp one phase of the sensor element from high frequency motions. The device is mounted in a housing under a continuously applied positive pressure or force in order to maintain the sensor element in the clamped position regardless of orientation of the transducer, which has the effect of reducing undershoot, among other things, in the output response signal produced by the transducer.

REFERENCES:
patent: 3285074 (1966-11-01), Elazar
patent: 3474403 (1969-10-01), Massa et al.
patent: 3855847 (1974-12-01), Leschek
patent: 4359658 (1982-11-01), Cartier
Information Packet on the NBS Conical Transducer for Acoustic Emission, Dec. 1981, National Bureau of Standards.

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