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Dissertations / Theses on the topic 'Piezoelectric Patches- a'

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Published: 3 June 2025
Last updated: 31 July 2025

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1

BARROS, LUIS PAULO FRANCO DE. "PIEZOELECTRIC PATCHES MODELING FOR COMPOSITE BEAMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1998. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=26509@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>Esta dissertação trata da modelagem dos esforços transmitidos por atuadores piezoelétricos, colados ou embutidos em vigas compósitas laminadas. O trabalho é motivado por aplicações na área de materiais e estruturas inteligentes. Em particular, procura-se avaliar o comportamento de diferentes teorias aproximadas nas faixas de médias e altas frequências, quando os comprimentos de onda podem ser da ordem da espessura da viga. Nestes casos, teorias tradicionais de vigas deixam de representar com acuracidade a resposta dinâmica de estr
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2

Hariri, Mohammed, and not supplied. "Control of Structures Using SMA Wires and Piezoelectric Patches." RMIT University. Aerospace, Mechanical & Manufacturing Engineering, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091001.154507.

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Smart materials and structures systems are increasingly being developed to handle more complex problems. One of the main research schemes is the augmentation of the control authority of the smart actuators used in such systems. The augmentation can be obtained by constructing hybrid and multi- smart materials actuator systems and/or by the optimization of the location and orientation of those actuators. In the first part of this study, the alteration of the natural frequency of composite structures using Nitinol-based Shape Memory Alloy (SMA) wires will be presented using the analyses of stra
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3

Li, Kaixiang. "Structural vibration damping with synchronized energy transfer between piezoelectric patches." Phd thesis, INSA de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00735788.

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Advanced materials such as carbon fiber, composite materials et al. are more and more used in modern industry. They make the structures lighter and stiffer. However, they bring vibration problems. Researchers studied numerous methods to eliminate the undesirable vibrations. These treatments are expected to be a compact, light, intellectual and modular system. Recently, a nonlinear technique which is known as Synchronized Switch Damping (SSD) technique was proposed. These techniques synchronously switched when structure got to its displacement extremes that leading to a nonlinear voltage on the
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4

Beck, Benjamin Stewart. "Negative capacitance shunting of piezoelectric patches for vibration control of continuous systems." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45850.

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The ability to reduce flexural vibrations of lightweight structures has been a goal for many researchers. A type of transducer-controller system that accomplishes this is a piezoelectric patch connected to an electrical impedance, or shunt. The piezoelectric patch converts the vibrational strain energy of the structure to which it is bonded into electrical energy. This converted electrical energy is then modified by the shunt to influence to mechanical response. There are many types of shunt circuits which have demonstrated effective control of flexural systems. Of interest in this work is the
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5

Mollenhauer, David Hilton. "Induced strain of actuation of surface bonded and embedded piezoceramic patches." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-07212009-040237/.

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6

Florens, Corine. "Modeling of the viscoelastic honeycomb panel equipped with piezoelectric patches in view of vibroacoustic active control design." Phd thesis, Ecole Centrale Paris, 2010. http://tel.archives-ouvertes.fr/tel-00545422.

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Active control has often been considered for low frequency control of noise radiated by trim panels inside aircraft or helicopter cabins. Trim panels are usually made of honeycomb core sandwich because of their high strength to mass ratio. Active control techniques applied to honeycomb panel have not always given results as good as expected and this thesis aims to understand these limitations based on validated mechanical models of the active panels. For the modeling of honeycomb panels, the main difficulty is to estimate equivalent properties for the core. A numerical homogenization procedure
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7

Rocha, Téo Lenquist da 1979. "Attenuation of noise and vibration using piezoelectric patches and dissipative shunt circuits = Atenuação de ruído e vibração utilizando pastilhas piezoelétricas e circuitos elétricos dissipativos." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265941.

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Orientador: Milton Dias Júnior<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-25T08:49:57Z (GMT). No. of bitstreams: 1 Rocha_TeoLenquistda_D.pdf: 5484630 bytes, checksum: 40d5122ff01ee4077957ffbc79369379 (MD5) Previous issue date: 2014<br>Resumo: Ruído em um veículo é geralmente causado pela vibração de vários componentes. Por exemplo, vibrações causadas pelo motor podem causar vibração de um painel levando a ruído no interior da cabine. O controle de tal ruído e vibração pode ser conseguido através da aplicaçã
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8

Castano, Cano Davinson. "Design of Multi-Axis Resonant Force/Torque Sensor for Robotics." Thesis, Besançon, 2016. http://www.theses.fr/2016BESA2089.

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Les capteurs de force / couple au poignet utilisés dans les applications robotiques augmentent les performances et la flexibilité des tâches automatisées. Ils offrent également de nouvelles possibilités dans le processus de fabrication, où un contact physique entre la pièce et l'environnement est requis. La large diffusion de ces capteurs est pour le moment limitée par leurs caractéristiques. En guise d'alternative aux capteurs de force existants dans le jeu de contraintes, notre travail présente une structure composite résonante, sensible aux multiples composantes de la force prises en compte
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9

Raju, Vinod. "Implementing Impedance - Based Health Monitoring." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/35657.

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This work is an experimental study of applying an impedance-based health monitoring technique to complex structures. The work is presented in three parts. In the first part we consider effects of the following three factors on damage detection abilities: actuator excitation level, test wire length and ambient conditions (temperature, structural loading and vibration). It was concluded that increasing the applied voltage improves the signal to noise ratio and damage detection abilities. Test wire lengths under 30m do not affect damage detection abilities. The technique is able to distinguish an
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10

Anusha, Anisetti. "Non-linear Shunting of Piezo-actuators for Vibration Suppression." Wright State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=wright1208834134.

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11

Luleci, Ibrahim Furkan. "Active Vibration Control Of Beam And Plates By Using Piezoelectric Patch Actuators." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615491/index.pdf.

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Conformal airborne antennas have several advantages compared to externally mounted antennas, and they will play an important role in future aircrafts. However, they are subjected to vibration induced deformations which degrade their electromagnetic performances. With the motivation of suppressing such vibrations, use of active vibration control techniques with piezoelectric actuators is investigated in this study. At first, it is aimed to control the first three bending modes of a cantilever beam. In this scope, four different modal controllers<br>positive position feedback (PPF), resonant c
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12

Fabiano, Luiz Felipe Gilli [UNESP]. "Avaliação de diafragma piezelétrico no monitoramento das condições da superfície da peça em processo de retificação plana tangencial." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/148655.

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Submitted by LUIZ FELIPE GILLI FABIANO null (luiz_gilli@hotmail.com) on 2017-01-28T11:38:47Z No. of bitstreams: 1 Dissertação Luiz Felipe Gilli Fabiano.pdf: 4348153 bytes, checksum: dec59fbb55fc39d0a5d03e18877ac8c2 (MD5)<br>Approved for entry into archive by LUIZA DE MENEZES ROMANETTO (luizamenezes@reitoria.unesp.br) on 2017-01-31T17:24:36Z (GMT) No. of bitstreams: 1 fabiano_lfg_me_bauru.pdf: 4348153 bytes, checksum: dec59fbb55fc39d0a5d03e18877ac8c2 (MD5)<br>Made available in DSpace on 2017-01-31T17:24:36Z (GMT). No. of bitstreams: 1 fabiano_lfg_me_bauru.pdf: 4348153 bytes, checksum: dec59
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13

Shivashankar, P. "Analytical Modelling and Non-linear Characterisation of Piezoelectric Materials for Actuation and Vibration Control of Beams." Thesis, 2017. http://etd.iisc.ac.in/handle/2005/4011.

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The use of piezoelectric materials for actuation, and vibration suppression of thin beams, is the subject of study in this doctoral thesis. The initial focus is set on reducing beam vibrations with resistively shunted piezoelectric patches, where the converted electrical energy is dissipated by the resistor to give an additional damping. The amount of additional damping achieved depends on the value of shunted resistor, the dimensions of the piezoelectric, and its location on the substructure. Hence, the resistively shunted piezoelectric-beam was modelled to determine the optimal values, and t
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14

Shivashankar, P. "Analytical Modelling and Non-linear Characterisation of Piezoelectric Materials for Actuation and Vibration Control of Beams." Thesis, 2017. http://etd.iisc.ernet.in/2005/3990.

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The use of piezoelectric materials for actuation, and vibration suppression of thin beams, is the subject of study in this doctoral thesis. The initial focus is set on reducing beam vibrations with resistively shunted piezoelectric patches, where the converted electrical energy is dissipated by the resistor to give an additional damping. The amount of additional damping achieved depends on the value of shunted resistor, the dimensions of the piezoelectric, and its location on the substructure. Hence, the resistively shunted piezoelectric-beam was modelled to determine the optimal values, and t
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15

Periasamy, Ramesh. "Shape Control of Composite Structures with Optimally Placed Piezoelectric Patches." Thesis, 2008. http://hdl.handle.net/10012/3573.

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The problem of shape control of composite laminated smart structures with piezoelectric patches placed at optimal location is considered in this thesis. Laminated plate structures with piezoelectric patches for shape control applications are modeled using a shear deformable plate formulation by including the piezoelectric layers into the plate substrate. A composite plate finite element model is also developed for composite plates with self-sensing actuators. Non-linear hysteresis models for piezoelectric materials are presented and discussed. Numerical simulation of composite plate structures
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16

Portela, Pedro Miguel dos Santos Carvalho. "Analysis of morphing, multi-stable structures actuated by piezoelectric patches." Master's thesis, 2005. http://hdl.handle.net/10216/11967.

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17

Portela, Pedro Miguel dos Santos Carvalho. "Analysis of morphing, multi-stable structures actuated by piezoelectric patches." Dissertação, 2005. http://hdl.handle.net/10216/11967.

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18

楊祐良. "Experimental studies of active vibration control of laminated composite plates with piezoelectric patches." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/23780530555806619915.

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碩士<br>國立中興大學<br>機械工程學系<br>87<br>Owing to the their attractive characteristics such as the high strength-to-weight ratio, the high stiffness-to-weight ratio, and the corrosion resistant property, composite materials have been found applications in various industries. As composite materials are gaining their popularity, in many occasions, however, one is required to pay a special attention to the vibration problem associated with products made of them. One approach to eliminating the vibration is to use the active control method. It is the goal of the present study to design a suitable digita
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19

Sharma, Manu. "Studies on application of fuzzy logic for active vibration control of beams and plates using piezoelectric patches." Thesis, 2004. http://localhost:8080/iit/handle/2074/5150.

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20

Tsao, Chih-Hao, and 曹誌浩. "The fabrication of piezoelectric fibers using near-field electrospinning method for smart patch." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/6fqh54.

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碩士<br>國立中山大學<br>機械與機電工程學系研究所<br>103<br>This thesis is based on near-field electrospinning technique, from the interaction between solution weight percent, viscosity, electrical conductivity and contact angle of （Polyvinylidene fluoride, PVDF） and [Poly（γ-methyl l-glutamate）, PMLG]/PVDF composite solution. Use the best parameters to produce the piezoelectric fibers by rolling collection device. The piezoelectric fibers are placed on the interdigitated electrode structure, and a high electric field is applied to re-polarization the sample that could enhance the electromechanical conversion rates
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21

WENG, WAN-CHING, and 翁琬晴. "Patch-type Piezoelectric Force Sensors for Real Time Monitoring in IOT based Logistics." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/h35myv.

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22

Hsieh, Yi Zheng, and 謝易錚. "Development of a polyvinylidene fluoride piezoelectric polymer film-based sensor patch for respiration monitoring." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/78622002969679123195.

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23

Tang, Wei-Hao, and 湯幃皓. "Study and Application of Piezoelectric Pulse-wave Energy Harvester Skin Patch Operating in 3-1, 3-3 Mode." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/98p99e.

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碩士<br>國立臺灣大學<br>工程科學及海洋工程學研究所<br>106<br>Due to the growing population with chronic diseases in aging society, the expenses of healthcare increases dramatically. Thus, wearable devices gradually prosper for the purpose of health condition monitoring to reduce healthcare expenses. However, if these sensor devices are powered by batteries, they will cause the limited service time and environmental impact. In order to extend the service time of batteries, or even replace them, many researchers have been studied on transforming the dynamic energy from human motion into electrical energy. Due to the
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24

Ho, Sio-Long, and 何小龍. "Optimal Vibration Control Synthesis of Smart Plates with Piezoelectric Patch Using Mindlin-Reissner Plate Elements Based on Analytical Trial Functions." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/61772377423048019530.

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碩士<br>國立高雄應用科技大學<br>土木工程與防災科技研究所<br>101<br>Mindlin plate elements are employed wherein independent interpolating functions are presumed for vertical displacements and rotational angles within the elements. When applied to thin plates shear locking phenomena occur and this can be circumvented via the reduced integration techniques, or selective integration scheme, etc. This thesis presents a research on the development and applications of ATF-TSP16 finite elements for thick to thin piezoelectric plates wherein the interpolation functions are built up based on the fundamental solutions of Mindli
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