H - Electricity – 04 – R
Patent
H - Electricity
04
R
349/35, 349/67.6
H04R 17/00 (2006.01) G01N 1/16 (2006.01) G01N 29/14 (2006.01) G01N 29/24 (2006.01) G10K 11/30 (2006.01) G21C 17/007 (2006.01) H04R 1/02 (2006.01)
Patent
CA 1094677
ABSTRACT OF THE DISCLOSURE Acoustic signals emitted by systems under pressure or stress are detected by acoustic sensors placed on the structure and the detected acoustic emissions are processed and analyzed to determine the presence of any defects in the structure, their location and significance. The sensor comprises a relatively small diameter transducer which can be bonded at appropriate locations on the surface of the system being tested. After being used, the transducers can be removed and reused again. Each transducer comprises a machined metal casing which includes a combined lens wearplate which is unitary, that is integral, with the casing and a detecting element such as a piezoelectric crystal bonded to the inner surface of the lens wearplate.
250548
Exxon Nuclear Company Inc.
Swabey Ogilvy Renault
LandOfFree
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