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Structural Optimization Design for Single Layer Surface Acoustic Wave Interdigital Transducer (SAW-IDT)
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Affiliation:

1.National Center for International Research on Structural Health Management of Critical Components, Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China;2.Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh 27606, US

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Fund Project:

National Natural Science Foundation of China (11872191, 11520101001); Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX20_3073)

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    Abstract:

    In order to optimize the actuating performance of single layer surface acoustic wave interdigital transducer (SAW-IDT) and to improve the deficiencies of calculation process of the δ function analysis method, the static properties of the SAW-IDT were analyzed by the finite element simulation optimization method. The influence of the width of the branch electrodes (w), the electrodes interval (s), and the thickness of the substrate (t) on the actuating performance of SAW-IDT was investigated. The simulation results show that when w/t=0.7, the optimal strain response can be obtained; when s/t>3.2, the maximum strain can be obtained. Besides, it can also be concluded that the smaller the electrode interval, the lower the actuating voltage. According to the simulated optimization results, a SAW-IDT was prepared and the frequency response was tested by experiments. The results provide a guidance for the preparation, performance testing, and application of SAW-IDT.

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[Wang Ziping, Fei Yue, Qian Lei, Xue Xian, Reddy Karthik. Structural Optimization Design for Single Layer Surface Acoustic Wave Interdigital Transducer (SAW-IDT)[J]. Rare Metal Materials and Engineering,2021,50(11):3917~3923.]
DOI:10.12442/j. issn.1002-185X.20200647

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History
  • Received:August 29,2020
  • Revised:November 09,2020
  • Adopted:December 14,2020
  • Online: November 25,2021
  • Published: November 24,2021