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 paper, an analytical study for piezothermoelastic behavior of a functionally graded piezoelectric cylindrical shell subjected to axisymmetric thermal or mechanical loading is presented for the case that the material properties obey an identical power law in the radial direction.
76 citations
TL;DR: In this paper, a theoretical and experimental investigation of the scattering behavior of extensional and flexural plate waves by a cylindrical inhomogeneity is presented, where exact solutions are obtained by using wave function expansion method, while the Born first approximation has been employed to derive explicit solutions that form the basis for efficient parametric inversion and eigenfunction back-propagation.
76 citations
TL;DR: In this article, an embedded impedance-based piezoelectric sensor was fabricated by using mixture of cement powder and epoxy resin as packaging layer, and the effects of temperature and load on impedance and conductance spectra of the sensor were investigated.
76 citations
TL;DR: In this article, a finite element modeling methodology is presented that incorporates both the piezoelectric coupling effects of the patches and the electrical dynamics of the connected passive electrical circuits.
76 citations
02 Jul 2001
TL;DR: In this article, a mathematical model is developed to predict the response of a rod with periodic shunted piezoelectric patches and to identify its stop band characteristics, and the conditions for achieving localized vibration are established and the localization factors are evaluated for different levels of disorder on the shunting parameters.
Abstract: Shunted piezoelectric patches are periodically placed along rods to control the longitudinal wave propagation in these rods. The resulting periodic structure is capable of filtering the propagation of waves over specified frequency bands called stop bands. The location and width of the stop bands can be tuned, using the shunting capabilities of the piezoelectric materials, in response to external excitations and to compensate for any structural uncertainty. A mathematical model is developed to predict the response of a rod with periodic shunted piezoelectric patches and to identify its stop band characteristics. The model accounts for the aperiodicity, introduced by proper tuning of the shunted electrical impedance distribution along the rod. Disorder in the periodicity typically extends the stop-bands into adjacent propagation zones and more importantly, produces the localization of the vibration energy near the excitation source. The conditions for achieving localized vibration are established and the localization factors are evaluated for different levels of disorder on the shunting parameters. The numerical predictions demonstrated the effectiveness and potentials of the proposed treatment that requires no control energy and combines the damping characteristics of shunted piezoelectric films, the attenuation potentials of periodic structures, and the localization capabilities of aperiodic structures. The theoretical investigations presented in this work provide the guidelines for designing tunable periodic structures with high control flexibility where propagating waves can be attenuated and localized.
76 citations