Method and apparatus for detecting acoustic emissions from metal

Details Method and apparatus for detecting acoustic emissions from metal Method and apparatus for detecting acoustic emissions from metal

1983-06-09

1984-12-11

Kreitman, Stephen A.

Measuring and testing

Vibration

By mechanical waves

73159, G01N 2904

Patent

active

044870680

ABSTRACT:
Apparatus for detecting acoustic emissions from metal matrix wire allows on-line measurement of the transverse strength of the wire as it is moving through its manufacturing process. A series of end and middle rollers guide the wire and form a bend in it. The location of the bend in the wire is maintained in contact with a liquid bath which, in turn, is contacted by the sensing surface of an acoustic transducer. Acoustic emissions from breaking of the fiber-matrix interface of the wire are transmitted by the bath and detected by the transducer.

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C. D. Bailey et al., "Acoustic Emission Monitors Damage Progression in Graphite Epoxy Composite Structure", Materials Evaluation, pp. 21-27, Aug. 1980.
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Parry, "Acoustic Emission Inspection," Material Evaluation, Oct. 1981, vol. 39, pp. 1004-1005.
Sheriff, "New Horizons for Acoustic Emission," Material Evaluation, Oct. 1981, vol. 39, pp. 1018-1019.

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