Journal ArticleDOI
Analytical Electroacoustic Model of a Piezoelectric Composite Circular Plate
Suryanarayana A.N Prasad,Quentin Gallas,Stephen Horowitz,Brian Homeijer,Bhavani V. Sankar,Louis N. Cattafesta,Mark Sheplak +6 more
TLDR
In this article, an analytical two-port, lumped-element model of a piezoelectric composite circular plate is presented, where the individual components of a unimorph transducer are modeled as lumped elements of an equivalent electrical circuit using conjugate power variables, and the transverse static deflection field as a function of pressure and voltage loading is determined to synthesize the twoport dynamic model.Abstract:
This paper presents an analytical two-port, lumped-element model of a piezoelectric composite circular plate. In particular, the individual components of a piezoelectric unimorph transducer are modeled as lumped elements of an equivalent electrical circuit using conjugate power variables. The transverse static deflection field as a function of pressure and voltage loading is determined to synthesize the two-port dynamic model. Classical laminated plate theory is used to derive the equations of equilibrium for clamped circular laminated plates containing one or more piezoelectric layers. A closed-form solution is obtained for a unimorph device in which the diameter of the piezoelectric layer is less than that of the shim. Methods to estimate the model parameters are discussed, and model verification via finite-element analyses and experiments is presented. The results indicate that the resulting lumped-element model provides a reasonable prediction (within 3%) of the measured response to voltage loading and the natural frequency, thus enabling design optimization of unimorph piezoelectric transducers.read more
Citations
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Journal ArticleDOI
Actuators for Active Flow Control
Louis N. Cattafesta,Mark Sheplak +1 more
TL;DR: This review provides a framework for the discussion of actuator specifications, characteristics, selection, design, and classification for aeronautical applications and attempts to highlight the strengths and inevitable drawbacks of each and highlight potential future research directions.
Journal ArticleDOI
Acoustic energy harvesting using an electromechanical Helmholtz resonator.
Fei Liu,Alex Phipps,Stephen Horowitz,Khai D. T. Ngo,Louis N. Cattafesta,Toshikazu Nishida,Mark Sheplak +6 more
TL;DR: This paper presents the development of an acoustic energy harvester using an electromechanical Helmholtz resonator (EMHR), which consists of an orifice, cavity, and a piezoelectric diaphragm that is sufficient to power a variety of low power electronic devices.
Journal ArticleDOI
An AlN MEMS Piezoelectric Microphone for Aeroacoustic Applications
TL;DR: In this paper, a micro-machined microphone for aircraft fuselage arrays is presented, which utilizes piezoelectric transduction via an integrated aluminum nitride layer in a thin-film composite diaphragm.
Journal ArticleDOI
Development of a micromachined piezoelectric microphone for aeroacoustics applications.
TL;DR: This paper describes the design, fabrication, and characterization of a bulk-micromachined piezoelectric microphone for aeroacoustic applications and indicates a sensitivity of 1.66 microVPa, dynamic range greater than six orders of magnitude (35.7-169 dB, re 20 microPa), a capacitance of 10.8 nF, and a resonant frequency of 59.0 kHz.
Journal ArticleDOI
The structure of an active acoustic metamaterial with tunable effective density
TL;DR: In this article, a new class of one-dimensional active acoustic metamaterials (AAMMs) with programmable effective densities is presented, which is capable of producing densities that are orders of magnitudes lower or higher than the ambient fluid.
References
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TL;DR: The theory of the slipline field is used in this article to solve the problem of stable and non-stressed problems in plane strains in a plane-strain scenario.
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Theory of plates and shells
TL;DR: In this article, the authors describe the bending of long RECTANGULAR PLATES to a cycloidal surface, and the resulting deformation of shels without bending the plates.
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TL;DR: A revised and expanded edition of this classic reference/text, covering the latest techniques for the analysis and measurement of stationary and nonstationary random data passing through physical systems, is presented in this article.
Journal ArticleDOI
Random Data Analysis and Measurement Procedures
TL;DR: Krystek as discussed by the authors provides a comprehensive and self-contained overview of random data analysis, including derivations of the key relationships in probability and random-process theory not usually found to such extent in a book of this kind.
Theory and analysis of elastic plates
TL;DR: The theory and analysis of Euler-Bernoulli Beams and Timoshenko Beams is discussed in this article. But the analysis of the classical plate theory is not considered.