Identification of the piezoelectric material coefficients using the finite element method with an asymptotic waveform evaluation |
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| Institution: | 1. National Institute of Aerospace, Hampton, VA 23666, USA;2. NASA Langley Research Center, Hampton, VA 23681, USA;3. Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, NY 13902, USA;1. Acoustics and Sensors Team, Material Physics and Applications (MPA-11), Los Alamos National Laboratory, NM 87545, USA;2. Department of Physics, University of Houston, TX 77004, USA;1. College of Engineering and Technology, Arab Academy for Science and Technology and Maritime Transport (AAST), Cairo, Egypt;2. Mechanical Power Engineering Dept. College of Engineering and Islamic Architecture, Umm Al-Qura University, Makkah, 5555, Saudi Arabia;3. Mechanical Power Engineering Dept., Faculty of Engineering – Mattaria, Helwan University, P.O. 11718, Cairo, Egypt;4. Faculty of Energy Systems and Nuclear Science, Ontario Tech University (UOIT), ON, Canada;1. National Institute of Aerospace, Hampton, VA 23666, USA;2. NASA Langley Research Center, Hampton, VA 23681, USA;3. Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, VA 22904, USA |
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| Abstract: | A rapid identification of the piezoelectric material constants for a piezoelectric transducer is proposed. The validity of a three-dimensional finite element routine was confirmed experimentally. The asymptotic waveform evaluation (AWE) was adopted for a fast frequency sweep of the finite element analysis. The three-dimensional finite element method with an AWE and a design sensitivity method was used for a material inversion scheme of piezoelectric transducers. In order to confirm the inversion routine of the material constants, the mechanical displacements, which mean the mode shape, were calculated along the vertical and lateral position of the sample transducer. |
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