Coupled Vibration Analysis for a Composite Cylindrical Piezoelectric Ultrasonic Transducer
The coupled vibration of a composite cylindrical piezoelectric ultrasonic transducer with large geometrical dimensions is analyzed. The composite transducer is composed of a longitudinal sandwich transducer, a metal tube and two metal radiation masses. The front and the back metal radiation masses are driven to vibrate longitudinally by the inner sandwich longitudinal transducer, which causes the metal tube to produce longitudinal-radial coupled vibration. Based on the apparent elasticity method, the coupled vibration of the metal tube is studied and its equivalent circuit is introduced. Then the electro- mechanical equivalent circuit and the resonance frequency equation of the composite cylindrical transducer are derived analytically. The coupled vibration of the transducer is simulated by using numerical method and the simulated resonance frequencies are in good agreement with those from the analytical method. It is shown that the composite transducer can produce vibration in the longitudinal and radial directions.
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Document Type: Research Article
Publication date: 2013-03-01
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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