In-Air and Underwater Performance and Finite Element Analysis of a Flextensional Device Having Electrostrictive Poly(vinylidene Fluoride-trifluoroethylene) Polymers As The Active Driving Element

Feng Xia, Zhong Yang Cheng, Qiming Zhang

    Research output: Contribution to journalArticlepeer-review

    3 Scopus citations

    Abstract

    A flextensional transducer, in which the electrostrictive poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] copolymer was used as the active driving element, was fabricated and characterized. The results show that transducers of several millimeters thick can produce an axial displacement of more than 1 mm in air along the thickness direction, and a transmitting voltage response of 123 dB re 1 μPa/V at 1 m in water at frequencies of several kilohertz. A finite element code (ANSYS, Inc., Canonsburg, PA) was used to model the in-air and underwater responses of the flextensional transducer over a broad frequency range. The calculated resonance frequencies and transmitting voltage response spectra show good agreement with the experimental data. In addition, the performance of both the in-air actuator and underwater transducer was analyzed for different design parameters of the flextensional structure. These results show that the performance of the flextensional transducer could be tailored readily by adjusting the parameters of the flextensional metal shell.

    Original languageEnglish (US)
    Pages (from-to)932-940
    Number of pages9
    JournalIEEE transactions on ultrasonics, ferroelectrics, and frequency control
    Volume50
    Issue number7
    DOIs
    StatePublished - Jul 1 2003

    All Science Journal Classification (ASJC) codes

    • Instrumentation
    • Acoustics and Ultrasonics
    • Electrical and Electronic Engineering

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