Surface- bonded and embedded optical fibres as ultrasonic sensors

Stephen Pierce; WR Philp; Anthony Gachagan; Alistair McNab; Gordon Hayward; Brian Culshaw

doi:10.1364/AO.35.005191

Surface- bonded and embedded optical fibres as ultrasonic sensors

Stephen Pierce, WR Philp, Anthony Gachagan, Alistair McNab, Gordon Hayward, Brian Culshaw

Electronic And Electrical Engineering

Research output: Contribution to journal › Article › peer-review

48 Citations (Scopus)

Abstract

The effectiveness of surface-bonded and embedded optical fibers for the detection of ultrasonic Lamb waves in 2–3-mm-thick steel, carbon-fiber-reinforced plastic (CFRP) and glass-reinforced plastic (GRP) plates are compared. A novel integrating ultrasonic sensor was achieved using the signal arm of an actively stabilized 633-nm homodyne Mach–Zehnder fiber interferometer which was either bonded directly to the plate surface or spliced to single-mode fibers embedded within a composite plate during manufacture. An embedded fiber is shown to be about 20 times more sensitive to Lamb wave motions than a surface-bonded fiber. However, the latter may be more practical.

Original language	English
Pages (from-to)	5191-5197
Number of pages	7
Journal	Applied Optics
Volume	35
Issue number	25
DOIs	https://doi.org/10.1364/AO.35.005191
Publication status	Published - 1996

Keywords

embedded optical fibers
ultrasonic sensors
surface-bonded

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10.1364/AO.35.005191

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title = "Surface- bonded and embedded optical fibres as ultrasonic sensors",

abstract = "The effectiveness of surface-bonded and embedded optical fibers for the detection of ultrasonic Lamb waves in 2–3-mm-thick steel, carbon-fiber-reinforced plastic (CFRP) and glass-reinforced plastic (GRP) plates are compared. A novel integrating ultrasonic sensor was achieved using the signal arm of an actively stabilized 633-nm homodyne Mach–Zehnder fiber interferometer which was either bonded directly to the plate surface or spliced to single-mode fibers embedded within a composite plate during manufacture. An embedded fiber is shown to be about 20 times more sensitive to Lamb wave motions than a surface-bonded fiber. However, the latter may be more practical.",

keywords = "embedded optical fibers , ultrasonic sensors, surface-bonded",

author = "Stephen Pierce and WR Philp and Anthony Gachagan and Alistair McNab and Gordon Hayward and Brian Culshaw",

year = "1996",

doi = "10.1364/AO.35.005191",

language = "English",

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journal = "Applied Optics",

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publisher = "Optical Society of America",

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T1 - Surface- bonded and embedded optical fibres as ultrasonic sensors

AU - Pierce, Stephen

AU - Philp, WR

AU - Gachagan, Anthony

AU - McNab, Alistair

AU - Hayward, Gordon

AU - Culshaw, Brian

PY - 1996

Y1 - 1996

N2 - The effectiveness of surface-bonded and embedded optical fibers for the detection of ultrasonic Lamb waves in 2–3-mm-thick steel, carbon-fiber-reinforced plastic (CFRP) and glass-reinforced plastic (GRP) plates are compared. A novel integrating ultrasonic sensor was achieved using the signal arm of an actively stabilized 633-nm homodyne Mach–Zehnder fiber interferometer which was either bonded directly to the plate surface or spliced to single-mode fibers embedded within a composite plate during manufacture. An embedded fiber is shown to be about 20 times more sensitive to Lamb wave motions than a surface-bonded fiber. However, the latter may be more practical.

AB - The effectiveness of surface-bonded and embedded optical fibers for the detection of ultrasonic Lamb waves in 2–3-mm-thick steel, carbon-fiber-reinforced plastic (CFRP) and glass-reinforced plastic (GRP) plates are compared. A novel integrating ultrasonic sensor was achieved using the signal arm of an actively stabilized 633-nm homodyne Mach–Zehnder fiber interferometer which was either bonded directly to the plate surface or spliced to single-mode fibers embedded within a composite plate during manufacture. An embedded fiber is shown to be about 20 times more sensitive to Lamb wave motions than a surface-bonded fiber. However, the latter may be more practical.

KW - embedded optical fibers

KW - ultrasonic sensors

KW - surface-bonded

U2 - 10.1364/AO.35.005191

DO - 10.1364/AO.35.005191

M3 - Article

SN - 1559-128X

VL - 35

SP - 5191

EP - 5197

JO - Applied Optics

JF - Applied Optics

IS - 25

ER -

Surface- bonded and embedded optical fibres as ultrasonic sensors

Abstract

Keywords

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