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Piezoelectric sensor

About: Piezoelectric sensor is a research topic. Over the lifetime, 7127 publications have been published within this topic receiving 115903 citations.


Papers
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Journal ArticleDOI
TL;DR: The measured wavelength shifts yield a linear slope of 0.14 nm/mstrain, in good agreement with calculated shifts based on published data for the elastic moduli and the strain-optic coefficients for fused quartz.
Abstract: Morphology-dependent resonance features are observed in the elastic-scattering spectra of 125-μm-diameter cylinders (optical fibers) as a function of wavelength. The positions of the resonances are strain sensitive and can be tuned in a controlled manner by the application of strain with a piezoelectric transducer. The measured wavelength shifts yield a linear slope of 0.14 nm/mstrain, in good agreement with calculated shifts based on published data for the elastic moduli and the strain-optic coefficients for fused quartz. This demonstrates a new miniature optical strain-sensor technique capable of microstrain sensitivity at a single point.

43 citations

Journal ArticleDOI
TL;DR: In this paper, a performance analysis of multimodal passive vibration control of a sandwich beam using shear piezoelectric materials, embedded in a core, connected to independent resistive shunt circuits, is presented.
Abstract: This work presents a performance analysis of multimodal passive vibration control of a sandwich beam using shear piezoelectric materials, embedded in a sandwich beam core, connected to independent resistive shunt circuits. Shear piezoelectric actuators were recently shown to be more interesting for higher frequencies and stiffer structures. In particular, for shunted damping, it was shown that equivalent material loss factors of up to 31% can be achieved by optimizing the shunt circuit. In the present work, special attention is given to the design of multimodal vibration control through independent shunted shear piezoelectric sensors. In particular, a parametric analysis is performed to evaluate optimal configurations for a set of modes to be damped. Then, a methodology to evaluate the modal damping resulting from each shunted piezoelectric sensor is presented using the modal strain energy method. Results show that modal damping factors of 1%–2% can be obtained for three selected vibration modes.

43 citations

Journal ArticleDOI
TL;DR: In this paper, the authors used topological optimization to design a mechanical amplifier that magnifies the limited actuation stroke of a piezoelectric actuator using a variable thickness method.
Abstract: Topological optimization is used to systematically design mechanical amplifiers that magnify the limited actuation stroke of a piezoelectric actuator. The design problem is posed as a material distribution problem using a variable thickness method. Two design goals are formulated for the design of the mechanical amplifier. They are the maximum dynamic stroke and the maximum dynamic magnification factor. The optimization problems are then solved using a method of moving asymptotes. The design domain is modelled as a plane-stress solid, and is actuated by harmonic excitation without the inclusion of damping. To model the actuator and workpiece, their stiffness is included and idealized as rod elements in the finite-element analysis. To show the capability of the design methodology, an elliptic amplifier and a magnification mechanism, used in a dot-matrix printer head, are reinvented using topological optimization. The dynamic effects on the optimum topology are also studied using different excitation frequencies.

42 citations

Journal ArticleDOI
TL;DR: In this paper, a series piezoelectric sensor is used for end-point determination in frequencimetric titrations, including neutralization, precipitation, complexation and redox titrations.

42 citations

Patent
22 Jul 1996
TL;DR: In this article, a musical sound control device is placed inside a shoe and operated by the foot of a user. Buttons are attached to a pair of hook and loop pads for detachably connecting the piezoelectric sensor device and the substrate member.
Abstract: A musical sound controlling apparatus to be placed inside a shoe and operated by the foot of a user. The musical sound controlling apparatus has a substrate plate and at least a piezoelectric sensor device. The substrate plate and the piezoelectric sensor device include a pair of hook and loop pads for detachably connecting the piezoelectric sensor device and the substrate member. Upon depression of the piezoelectric sensor device by the foot of a user, the piezoelectric sensor generates a signal for controlling musical sounds. Furthermore, the substrate plate is divided into two separated sections, a toe section and a heel section. A size adjusting device slidably couples the heel section to the toe section so that the overall size of the musical sound controlling apparatus can be changed according to the size of the shoe.

42 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202385
2022134
2021146
2020219
2019251
2018238