Topic
Piezoelectric sensor
About: Piezoelectric sensor is a research topic. Over the lifetime, 7127 publications have been published within this topic receiving 115903 citations.
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TL;DR: In this article, the authors provided an analytical and numerical study to simulate the wave propagation in an elastic half plane with surface-bonded piezoceramic actuators under high-frequency electric loads.
Abstract: Surface-bonded piezoelectric actuators can be used to generate Rayleigh wave for monitoring surface damages of structures. This paper provides an analytical and numerical study to simulate the wave propagation in an elastic half plane with surface-bonded piezoceramic actuators under high-frequency electric loads. Based on a one dimensional actuator model, the wave propagation induced by a single actuator is studied first by using integral transform method and solving the resulting integral equations. The single actuator solution is then implemented into a Pseudo-incident wave method to study the wave propagation induced by multiple actuators. Two aspects of the work are examined. The first is concerned with the determination of the effect of the geometry, the material mismatch and the loading frequency upon the resulting waveform, while the second is concerned with the effect of the interaction between actuators upon the induced wave propagation.
43 citations
TL;DR: In this article, a finite element formulation for active control of forced vibrations, including resonance, of thin plate/shell laminated structures with integrated piezoelectric layers, acting as sensors and actuators, based on third-order shear deformation theory, is presented.
43 citations
TL;DR: In this article, the float characteristics of a square squeeze-film air bearing using piezoelectric actuators as a vibrator are discussed, and the influence of various design parameters on the float properties of the proposed bearing, such as the vibration frequency, input voltage, and imposed load were investigated theoretically and experimentally.
43 citations
TL;DR: A postbuckling analysis for a cross-ply laminated cylindrical shell with piezoelectric actuators subjected to the combined action of external pressure and heating and under electric loading cases is presented in this paper.
43 citations
TL;DR: The model predicts with sufficient accuracy only the first radial and the first thickness modes of the cylinder-shaped piezoceramic element of arbitrary aspect ratio; but, for these modes, it is able to compute all the relations between the input applied voltage and the output forces and velocities on every external surface.
Abstract: In this paper an approximated 3-D model of cylinder shaped piezoceramics is described. In the hypothesis of axial symmetry, the element vibration in the extensional and radial directions is described by two coupled differential wave equations. The model is obtained choosing, as solution of these equations, two orthogonal wave functions, each depending only on one axis, corresponding to the propagation direction. The mechanical boundary conditions are applied imposing continuity between the stresses and the external forces on the surfaces of the element in an integral way, while, as far as the electrical boundary condition is concerned, two possibilities are explored: to neglect the piezoelectric constant in the transverse direction and to impose an integral condition also for the electric field. Comparisons with experimental results show this last approach to give better results. The model predicts with sufficient accuracy only the first radial and the first thickness modes of the cylinder-shaped piezoceramic element of arbitrary aspect ratio; but, for these modes, it is able to compute all the relations between the input applied voltage and the output forces and velocities on every external surface. Because only these two modes are of relevance in the practical applications of piezoceramic elements as ultrasonic transducers, the model can be used as a simple and useful tool in transducer design and optimization. Experimental validations of the model are also shown in the work.
43 citations