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Related Experiment Videos

Flexible ultrasonic transducers.

Makiko Kobayashi1, Cheng-Kuei Jen, Daniel Lévesque

  • 1Industrial Materials Institute, National Research Council of Canada, Boucherville, Quebec, Canada.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|August 23, 2006
PubMed
Summary

Flexible ultrasonic transducers (UTs) using stainless steel foil and lead-zirconate-titanate (PZT) composite films offer reliable nondestructive testing on various surfaces. These adaptable sensors perform comparably to commercial options.

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Area of Science:

  • Materials Science
  • Nondestructive Testing
  • Ultrasonic Transducers

Background:

  • Flexible ultrasonic transducers (UTs) are crucial for advanced inspection techniques.
  • Existing UTs often lack the adaptability for curved or complex surfaces.
  • Developing robust, flexible sensors is key for broader applications.

Purpose of the Study:

  • To develop and characterize flexible ultrasonic transducers (UTs).
  • To evaluate their performance in nondestructive testing (NDT) on diverse surfaces and temperatures.
  • To compare their signal strength with commercial transducers.

Main Methods:

  • Fabrication of flexible UTs using stainless steel (SS) foil, lead-zirconate-titanate (PZT)/PZT composite film, and silver paste.
  • Utilizing a sol-gel spray technique for PZT/PZT film deposition (40-70 microm thickness).

Related Experiment Videos

  • Conducting pulse-echo mode NDT on flat and curved surfaces at room temperature and 160°C, complemented by numerical simulations.

    • Main Results:

    • Successful demonstration of flexible UTs for NDT on various materials and geometries.
    • Validation of sensor performance at elevated temperatures (160°C).
    • Numerical simulations showed good agreement with experimental data regarding foil thickness effects.
    • A PZT/PZT flexible transducer exhibited signal strength comparable to a commercial transducer.

    Conclusions:

    • Flexible UTs based on SS and PZT composites are viable for NDT applications.
    • The developed transducers demonstrate robustness and adaptability for challenging inspection scenarios.
    • These flexible UTs present a promising alternative to conventional transducers, offering comparable performance.