Construction and evaluation of a new generation of flexible ultrasonic transducers

Anthony Gachagan, P. Reynolds, Gordon Hayward, A McNab

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

8 Citations (Scopus)


This paper describes the construction of a new generation of flexible ultrasonic transducers. The device consists of an array of piezoceramic platelet devices of high aspect ratio embedded within a soft polymer matrix, supported by a copper/polyimide flexible printed circuit board. Theoretical modelling using both a linear systems approach and the ANSYS finite element package was used to predict transducer behaviour, and compared with experimental results and surface displacement profiles with good correlation. In addition, the linear systems technique was utilised to evaluate potential piezoceramic materials and the results compared to a conventional thin piezopolymer film transducer structure. The ceramic/polymer platelet transducer has been implemented in two application areas: a 6 MHz multi-element linear array for flaw detection in curved test specimens, allowing imaging of test piece construction; and efficient generation of the fundamental symmetrical Lamb wave at frequencies below 500 kHz, using interdigital design techniques, in both aluminium and carbon-fibre reinforced polymer composite plates. Experimental results will be presented which will demonstrate the application of this flexible transducer technology to practical NDE.
Original languageEnglish
Title of host publication1996 IEEE Ultrasonics Symposium Proceedings
Place of PublicationPiscataway, NJ, United States
Number of pages4
ISBN (Print)0780336151
Publication statusPublished - 1996
Event1996 IEEE Ultrasonics Symposium Proceedings - Texas, Sab Antonio, United States
Duration: 3 Nov 19966 Nov 1996


Conference1996 IEEE Ultrasonics Symposium Proceedings
Country/TerritoryUnited States
CitySab Antonio


  • ANSYS finite element package
  • flexible printed circuit board
  • flexible ultrasonic transducers
  • piezoceramic platelet devices
  • surface displacement profiles


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