Design of a low profile array transducer in d15 mode for high angled shear wave generation

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Abstract

Shear wave inspection is generated from mode conversion of longitudinal waves, using a selected, angled wedge positioned between the transducer and the test specimen. However, in certain scenarios where access is restricted the combination of the transducer and the wedge can be too cumbersome for in situ deployment. In this work, a low profile, linear ultrasound array transducer is proposed to generate shear waves via direct coupling to the component surface precluding the requirement for a wedge. The array transducer was designed using finite element modelling, and a prototyped array was manufactured with 32 elements and operating frequency at ~2MHz. Preliminary imaging results has shown the shear wave beam generated can be operated at high angles up to 80 degrees.
Original languageEnglish
Title of host publicationUltrasonics Symposium (IUS), 2016 IEEE International
PublisherIEEE
Number of pages4
Publication statusPublished - 21 Sep 2016
EventIEEE International Ultrasonics Symposium 2016 - VINCI Convention Center, Tours, France
Duration: 18 Sep 201621 Sep 2016
http://sites.ieee.org/ius-2016/

Conference

ConferenceIEEE International Ultrasonics Symposium 2016
Abbreviated title2016 IEEE IUS
CountryFrance
CityTours
Period18/09/1621/09/16
Internet address

Keywords

  • shear wave
  • direct coupling
  • linear array
  • low profile
  • high angle
  • NDT/E
  • mode conversion
  • longitudinal waves
  • angled wedge
  • finite element modelling

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    Cite this

    Qiu, Z., O'Leary, R., Gachagan, A., & Dobson, J. (2016). Design of a low profile array transducer in d15 mode for high angled shear wave generation. In Ultrasonics Symposium (IUS), 2016 IEEE International IEEE.