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Research on the Optimal Design and Application of Wideband TIDT Structures
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National Natural Science Foundation of China (11872191 and 11520101001), Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX19_1578)

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    Abstract:

    The interdigital transducer (IDT), developed from surface acoustic wave devices, has been gradually applied to structural health monitoring systems due to its operating frequency, adjustable frequency bandwidth and low loss. Therefore, it has a wide application prospect in smart materials and structures. In this paper, the wideband trapezoidal interdigital transducer (TIDT) is studied for the shortage, narrow bandwidth, of the existing rectangular IDT. The finite element analysis method was used to optimize the TIDT structure, and the TIDT performance was tested. The preliminary application of TIDT for structural damage detection was studied through experiments. The experimental results show that TIDT improves damage recognition accuracy in practical applications and has broad application prospects.

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[Wang Ziping. Research on the Optimal Design and Application of Wideband TIDT Structures[J]. Rare Metal Materials and Engineering,2020,49(11):3790~3795.]
DOI:10.12442/j. issn.1002-185X.20191056

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History
  • Received:December 15,2019
  • Revised:April 18,2020
  • Adopted:April 26,2020
  • Online: December 09,2020
  • Published: