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Monitoring pipe wall integrity using fiber Bragg grating-based sensing of low-frequency guided ultrasonic waves
Published in Elsevier B.V.
2018
PMID: 29945093
Volume: 90
   
Pages: 120 - 124
Abstract
Recent literature shows that low-frequency ultrasonic guided waves experience mode confinement and loss of axi-symmetry in pipes with axially uniform features such as eccentricity. Considering extended wall loss as a case of uniform eccentricity, this paper proposes to monitor pipe integrity by measuring changes to the modal structure of low-frequency axisymmetric L(0,2) longitudinal guided waves. Fiber Bragg gratings are shown to be effective in detecting changes to L(0,2) modal characteristics, providing a novel route to health monitoring of pipe assets. © 2018 Elsevier B.V.
About the journal
JournalData powered by TypesetUltrasonics
PublisherData powered by TypesetElsevier B.V.
ISSN0041624X
Open AccessNo
Concepts (12)
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    Fiber bragg gratings
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    Guided electromagnetic wave propagation
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    Ultrasonic waves
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    ANNULAR CYLINDERS
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    GUIDED ULTRASONIC WAVES
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    Health monitoring
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    LOW FREQUENCY ULTRASONIC
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    Low-frequency
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    MODAL CHARACTERISTICS
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    MODAL STRUCTURES
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    PIPE INTEGRITY
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    Structural health monitoring