A comparison of 3 optical systems for the detection of broadband ultrasound

G.J. Thursby, Campbell McKee, B. Culshaw

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

4 Citations (Scopus)

Abstract

There are many applications of ultrasound in the field of material properties' evaluation and structural health monitoring. Here we will consider the detection of broadband laser generated ultrasound taking as an example acoustic emission as simulated by the pencil break test. In this paper three optical methods of detecting these ultrasound signals are compared; these are polarimetry, fibre Bragg gratings and vibrometery. Of these, the first two involve the bonding of a fibre sensor to the sample, whilst the vibrometer is a non-contact instrument that measures out-of-plane displacements. FBGs respond to the inplane strains associated with an ultrasound wave whilst the polarimeter detects birefringence produced by pressure waves acting normal to the fibre. The sensitivities of the systems are compared and their relative merits are discussed. It will also be shown that the polarimetric responses of symmetric and antisymmetric Lamb waves differ, which opens up the possibility of learning more about the nature of an acoustic signal using this technique than can be determined simply from the measurement of in-plane or out-of plane displacements alone.
Original languageEnglish
Title of host publicationSmart sensor phenomena, technology networks and systems 2010
EditorsK.J. Peters, W. Ecke, T.E. Matikas
Place of PublicationBellingham
DOIs
Publication statusPublished - 2010
EventConference on Smart Sensor, Phenomena, Technology, Networks, and Systems 2010 - San Diego, United States
Duration: 8 Mar 201010 Mar 2010

Publication series

NameProceedings of SPIE-The International Society for Optical Engineering
PublisherSPIE
Volume7648
ISSN (Print)0277-786X

Conference

ConferenceConference on Smart Sensor, Phenomena, Technology, Networks, and Systems 2010
CountryUnited States
CitySan Diego
Period8/03/1010/03/10

Fingerprint

broadband
fibers
Lamb waves
polarimetry
acoustic emission
polarimeters
elastic waves
learning
Bragg gratings
birefringence
optics
acoustics
evaluation
sensitivity
sensors
lasers

Keywords

  • optical systems
  • broadband ultrasound
  • optical fibre sensors
  • lamb waves
  • acoustic Emission
  • polarimetry
  • FBGs

Cite this

Thursby, G. J., McKee, C., & Culshaw, B. (2010). A comparison of 3 optical systems for the detection of broadband ultrasound. In K. J. Peters, W. Ecke, & T. E. Matikas (Eds.), Smart sensor phenomena, technology networks and systems 2010 (Proceedings of SPIE-The International Society for Optical Engineering ; Vol. 7648). Bellingham. https://doi.org/10.1117/12.847296
Thursby, G.J. ; McKee, Campbell ; Culshaw, B. / A comparison of 3 optical systems for the detection of broadband ultrasound. Smart sensor phenomena, technology networks and systems 2010. editor / K.J. Peters ; W. Ecke ; T.E. Matikas. Bellingham, 2010. (Proceedings of SPIE-The International Society for Optical Engineering ).
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Thursby, GJ, McKee, C & Culshaw, B 2010, A comparison of 3 optical systems for the detection of broadband ultrasound. in KJ Peters, W Ecke & TE Matikas (eds), Smart sensor phenomena, technology networks and systems 2010. Proceedings of SPIE-The International Society for Optical Engineering , vol. 7648, Bellingham, Conference on Smart Sensor, Phenomena, Technology, Networks, and Systems 2010 , San Diego, United States, 8/03/10. https://doi.org/10.1117/12.847296

A comparison of 3 optical systems for the detection of broadband ultrasound. / Thursby, G.J.; McKee, Campbell; Culshaw, B.

Smart sensor phenomena, technology networks and systems 2010. ed. / K.J. Peters; W. Ecke; T.E. Matikas. Bellingham, 2010. (Proceedings of SPIE-The International Society for Optical Engineering ; Vol. 7648).

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

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Thursby GJ, McKee C, Culshaw B. A comparison of 3 optical systems for the detection of broadband ultrasound. In Peters KJ, Ecke W, Matikas TE, editors, Smart sensor phenomena, technology networks and systems 2010. Bellingham. 2010. (Proceedings of SPIE-The International Society for Optical Engineering ). https://doi.org/10.1117/12.847296