Detection of ultrasonic lamb waves in composite plates using optical-fibres

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

14 Citations (Scopus)

Abstract

This paper presents experimental results for a new condition monitoring system that uses a combination of piezoelectric and fibre-optic technologies as the active and passive elements respectively. Composite plate samples have been manufactured containing two groups of optical-fibres (typically four strands per group) embedded across the length of the plate. Polyimide coated 4/125 μm single-mode glass fibre has been utilised and connected to a portable 633 nm Mach-Zehnder fibre interferometer for signal demodulation and subsequent data acquisition. For this present work, 1-3 connectivity piezocomposite transducers have been used to generate a known Lamb wave within carbon fibre reinforced composite plate (CFRP) structures. The S0 mode was selected due to the relatively large in-plane motion and low dispersion characteristics. Results using both externally surface bonded fibres and embedded fibres are presented, for a range of defective plates. Defects ranging from 1 mm diameter holes through to significant delaminations have been detected at an ultrasonic operating frequency of 285 kHz
LanguageEnglish
Title of host publication1995 IEEE Ultrasonics Symposium, 1995. Proceedings
PublisherIEEE
Pages803-806
Number of pages4
ISBN (Print)0780329406
DOIs
Publication statusPublished - 1995
Event1995 IEEE Ultrasonics Symposium - , United Kingdom
Duration: 7 Nov 199510 Nov 1995

Conference

Conference1995 IEEE Ultrasonics Symposium
CountryUnited Kingdom
Period7/11/9510/11/95

Fingerprint

Lamb waves
Ultrasonic waves
Surface waves
Optical fibers
ultrasonics
optical fibers
composite materials
Fibers
Composite materials
fibers
Condition monitoring
Single mode fibers
Demodulation
Delamination
Polyimides
Glass fibers
Interferometers
Fiber optics
Mach number
Carbon fibers

Keywords

  • optical-fibres
  • ultrasonic Lamb waves
  • composite plates
  • ultrasonic materials testing
  • Mach-Zehnder interferometers
  • carbon fibre reinforced composites
  • delamination
  • fibre optic sensors
  • flaw detection
  • intelligent sensors
  • piezoelectric transducers
  • surface acoustic wave transducers

Cite this

Gachagan, A., Pierce, S., Philp, WR., McNab, A., Hayward, G., & Culshaw, B. (1995). Detection of ultrasonic lamb waves in composite plates using optical-fibres. In 1995 IEEE Ultrasonics Symposium, 1995. Proceedings (pp. 803-806). IEEE. https://doi.org/10.1109/ULTSYM.1995.495688
Gachagan, Anthony ; Pierce, Stephen ; Philp, WR ; McNab, A ; Hayward, Gordon ; Culshaw, Brian . / Detection of ultrasonic lamb waves in composite plates using optical-fibres. 1995 IEEE Ultrasonics Symposium, 1995. Proceedings. IEEE, 1995. pp. 803-806
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title = "Detection of ultrasonic lamb waves in composite plates using optical-fibres",
abstract = "This paper presents experimental results for a new condition monitoring system that uses a combination of piezoelectric and fibre-optic technologies as the active and passive elements respectively. Composite plate samples have been manufactured containing two groups of optical-fibres (typically four strands per group) embedded across the length of the plate. Polyimide coated 4/125 μm single-mode glass fibre has been utilised and connected to a portable 633 nm Mach-Zehnder fibre interferometer for signal demodulation and subsequent data acquisition. For this present work, 1-3 connectivity piezocomposite transducers have been used to generate a known Lamb wave within carbon fibre reinforced composite plate (CFRP) structures. The S0 mode was selected due to the relatively large in-plane motion and low dispersion characteristics. Results using both externally surface bonded fibres and embedded fibres are presented, for a range of defective plates. Defects ranging from 1 mm diameter holes through to significant delaminations have been detected at an ultrasonic operating frequency of 285 kHz",
keywords = "optical-fibres, ultrasonic Lamb waves, composite plates, ultrasonic materials testing , Mach-Zehnder interferometers, carbon fibre reinforced composites, delamination , fibre optic sensors, flaw detection, intelligent sensors, piezoelectric transducers, surface acoustic wave transducers",
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Gachagan, A, Pierce, S, Philp, WR, McNab, A, Hayward, G & Culshaw, B 1995, Detection of ultrasonic lamb waves in composite plates using optical-fibres. in 1995 IEEE Ultrasonics Symposium, 1995. Proceedings. IEEE, pp. 803-806, 1995 IEEE Ultrasonics Symposium , United Kingdom, 7/11/95. https://doi.org/10.1109/ULTSYM.1995.495688

Detection of ultrasonic lamb waves in composite plates using optical-fibres. / Gachagan, Anthony; Pierce, Stephen; Philp, WR; McNab, A; Hayward, Gordon; Culshaw, Brian .

1995 IEEE Ultrasonics Symposium, 1995. Proceedings. IEEE, 1995. p. 803-806.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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T1 - Detection of ultrasonic lamb waves in composite plates using optical-fibres

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AU - Pierce, Stephen

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AU - Hayward, Gordon

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N2 - This paper presents experimental results for a new condition monitoring system that uses a combination of piezoelectric and fibre-optic technologies as the active and passive elements respectively. Composite plate samples have been manufactured containing two groups of optical-fibres (typically four strands per group) embedded across the length of the plate. Polyimide coated 4/125 μm single-mode glass fibre has been utilised and connected to a portable 633 nm Mach-Zehnder fibre interferometer for signal demodulation and subsequent data acquisition. For this present work, 1-3 connectivity piezocomposite transducers have been used to generate a known Lamb wave within carbon fibre reinforced composite plate (CFRP) structures. The S0 mode was selected due to the relatively large in-plane motion and low dispersion characteristics. Results using both externally surface bonded fibres and embedded fibres are presented, for a range of defective plates. Defects ranging from 1 mm diameter holes through to significant delaminations have been detected at an ultrasonic operating frequency of 285 kHz

AB - This paper presents experimental results for a new condition monitoring system that uses a combination of piezoelectric and fibre-optic technologies as the active and passive elements respectively. Composite plate samples have been manufactured containing two groups of optical-fibres (typically four strands per group) embedded across the length of the plate. Polyimide coated 4/125 μm single-mode glass fibre has been utilised and connected to a portable 633 nm Mach-Zehnder fibre interferometer for signal demodulation and subsequent data acquisition. For this present work, 1-3 connectivity piezocomposite transducers have been used to generate a known Lamb wave within carbon fibre reinforced composite plate (CFRP) structures. The S0 mode was selected due to the relatively large in-plane motion and low dispersion characteristics. Results using both externally surface bonded fibres and embedded fibres are presented, for a range of defective plates. Defects ranging from 1 mm diameter holes through to significant delaminations have been detected at an ultrasonic operating frequency of 285 kHz

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Gachagan A, Pierce S, Philp WR, McNab A, Hayward G, Culshaw B. Detection of ultrasonic lamb waves in composite plates using optical-fibres. In 1995 IEEE Ultrasonics Symposium, 1995. Proceedings. IEEE. 1995. p. 803-806 https://doi.org/10.1109/ULTSYM.1995.495688