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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.


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TL;DR: Li et al. as discussed by the authors proposed an integrated 3D printing process with corona poling to fabricate piezoelectric polyvinylidene fluoride (PVDF) sensors without post poling process.
Abstract: This paper presents a novel process to fabricate piezoelectric films from polyvinylidene fluoride (PVDF) polymer using integrated fused deposition modeling (FDM) 3D printing and corona poling technique Corona poling is one of many effective poling processes that has received attention to activate PVDF as a piezoelectric responsive material The corona poling process occurs when a PVDF polymer is exposed to a high electric field created and controlled through an electrically charged needle and a grid electrode under heating environment FDM 3D printing has seen extensive progress in fabricating thermoplastic materials and structures, including PVDF However, post processing techniques such as poling is needed to align the dipoles in order to gain piezoelectric properties To further simplify the piezoelectric sensors and structures fabrication process, this paper proposes an integrated 3D printing process with corona poling to fabricate piezoelectric PVDF sensors without post poling process This proposed process, named 'Integrated 3D Printing and Corona poling process' (IPC), uses the 3D printer's nozzle and heating bed as anode and cathode, respectively, to create poling electric fields in a controlled heating environment The nozzle travels along the programmed path with fixed distance between nozzle tip and sample's top surface Simultaneously, the electric field between the nozzle and bottom heating pad promotes the alignment of dipole moment of PVDF molecular chains The crystalline phase transformation and output current generated by printed samples under different electric fields in this process were characterized by a Fourier transform infrared spectroscopy and through fatigue load frame It is demonstrated that piezoelectric PVDF films with enhanced β-phase percentage can be fabricated using the IPC process In addition, mechanical properties of printed PVDF was investigated by tensile testing It is expected to expand the use of additive manufacturing to fabricate piezoelectric PVDF-based devices for applications such as sensing and energy harvesting

122 citations

Journal ArticleDOI
TL;DR: In this paper, an exact static analysis of a simply supported intelligent structure under cylindrical bending is presented, where the performance of the actuator layer of the intelligent structure to cause induced axial and transverse stresses in the substrate layer is investigated.

121 citations

Journal ArticleDOI
TL;DR: In this paper, a new piezoelectric energy harvester for harnessing energy from flow-induced vibration is developed, which converts flow energy into electrical energy by piezo-lectric conversion with oscillation of a piezolectric film.
Abstract: A new piezoelectric energy harvester for harnessing energy from flow-induced vibration is developed. It converts flow energy into electrical energy by piezoelectric conversion with oscillation of a piezoelectric film. A finite element model is developed in order to estimate the generated voltage of the piezoelectric laminate subjected to a distributed load. Prototypes of the energy harvester are fabricated and tested. Experimental results show that an open circuit output voltage of 2.2 Vpp and an instantaneous output power of 0.2 µW are generated when the excitation pressure oscillates with an amplitude of 1.196 kPa and a frequency of about 26 Hz. The solution of the generated voltage based on the finite element model agrees well with the experiments. Based on the finite element model, the effects of the piezoelectric film dimensions, the fluid pressure applied to the harvester and types of piezoelectric layer on the output voltage of the harvester can be investigated.

121 citations

Journal ArticleDOI
TL;DR: In this article, an effective model of surface-bounded flat PZT disks based on effective force, moment and displacement is developed for Lamb wave excitation, collection and propagation in isotropic plate and quasi-isotropic laminated composite.

120 citations

Journal ArticleDOI
TL;DR: In this paper, a new geometry for MEMS scale cantilever harvesters with low fundamental frequencies is proposed, modeled, and solved to show that such a structure would be able to vibrate near resonance at the micro-electro-mechanical scale.
Abstract: This paper addresses an issue in energy harvesting that has plagued the potential use of harvesting through the piezoelectric effect at the micro-electro-mechanical systems (MEMS) scale. Effective energy harvesting devices typically consist of a cantilever beam substrate coated with a thin layer of piezoceramic material and fixed with a tip mass tuned to resonant at the dominant frequency of the ambient vibration. The fundamental natural frequency of a beam increases as its length decreases, so that at the MEMS scale the resonance condition occurs orders of magnitude higher than ambient vibration frequencies, rendering the harvester ineffective. Here, we propose a new geometry for MEMS scale cantilever harvesters with low fundamental frequencies. A "zigzag" geometry is proposed, modeled, and solved to show that such a structure would be able to vibrate near resonance at the MEMS scale. An analytical solution is presented and verified against Rayleigh's method and is validated against a macroscale experiment. The analysis is used to provide design guidelines and parametric studies for constructing an effective MEMS scale energy harvesting device in the frequency range common to low frequency ambient vibrations, removing a current barrier.

120 citations


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