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Optical-Fiber Sensors for the Detection of Acoustic Emission

Published online by Cambridge University Press:  31 January 2011

William B. Spillman Jr  and
Richard O. Claus
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Abstract

Acoustic emission (AE) is used as a means to anticipate the mechanical failure of critical materials and structures by detecting the release of energy caused by material rearrangement at the microlevel. Optical-fiber sensors have potential advantages over conventional tuned piezoelectric transducers and signal-processing methods for the detection of such types of ultrasonic acoustic wave events. A number of fiber Bragg grating techniques are presented, which in particular offer the potential to provide the high-speed signal processing and ability to multiplex numbers of AE sensors necessary to detect, quantify, and locate AE sources and thereby determine material properties and damage.

Keywords

acoustic emissionoptical-fiber sensorssignal processing.
Type
Research Article
Information
MRS Bulletin , Volume 27 , Issue 5: Optical-Fiber Sensors , May 2002 , pp. 396 - 399
Copyright
Copyright © Materials Research Society 2002

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