Investigation of large signal properties of quasi-static lead zirconate titanate actuators at elevated temperature

Mangeot, Charles; Andersen, Bjørn

doi:10.1080/17436753.2015.1104051

Cited by 4 publications

(5 citation statements)

References 14 publications

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“…The length of the stack is 0.02 m. The free stroke and the blocking force have been investigated. A voltage of 200 V has been applied, that is, in according with the geometrical properties of the actuator, the active material is subject to an electric field equal to 2985 kV m −1 that is in the operational limits of the material as shown in the work by Mangeot and Andersen (2016). When the free stroke was considered, the model was constrained in the central section, but the section deformation was not constrained, as shown in Figure 9(a).…”

Section: Multi-layered Piezoelectric Stack Analysismentioning

confidence: 99%

Thermo-piezo-elastic analysis of amplified piezoceramic actuators using a refined one-dimensional model

Zappino

Carrera

2017

Journal of Intelligent Material Systems and Structures

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The thermo-piezo-elastic analysis of amplified piezoceramic actuators is presented in this article. A refined one-dimensional multi-field finite element model, based on the Carrera Unified Formulation, has been developed. Thermal and piezoelectric effects have been included in the structural model and a fully coupled thermo-piezo-elastic analysis has been performed. The finite element model has been assessed by comparing it with results from open literature The model has also been used to perform the analysis of complex amplified piezoceramic actuators. These actuators are able to amplify the displacements produced by piezoceramic material, but they suffer from high deformations when they undergo high thermal loads. An accurate thermal analysis has been performed to evaluate the strain/stress field. The results show the accuracy of the present model and its capabilities in multi-field analyses.

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Section: Multi-layered Piezoelectric Stack Analysismentioning

confidence: 99%

Thermo-piezo-elastic analysis of amplified piezoceramic actuators using a refined one-dimensional model

Zappino

Carrera

2017

Journal of Intelligent Material Systems and Structures

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“…Using a simple Sawyer-Tower circuit [6], the charge absorbed by the sample is measured and split into in-phase (capacitive) and out-of-phase (resistive) components with reference to the applied voltage. More details about the measurement method can be found in a previous publication [5].…”

Section: Apparent Capacitancementioning

confidence: 99%

“…The actuator is submitted to a trapezoidal signal from 0 to its maximum operating voltage and displacement is monitored over 2 minutes in order to measure and compensate for the creep effect. More details about the measurement method can be found in a previous publication [5].…”

Section: Free Displacementmentioning

confidence: 99%

“…This publication focuses on the comparison of the dielectric properties, free displacement and stiffness of the two materials, concluding on material selection based on criteria of free displacement and mechanical energy. A previous publication [5] was focusing on dielectric losses and creep, while other parameters will be analyzed in more detail in further publications.…”

Section: Introductionmentioning

confidence: 99%

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Temperature dependence of soft-doped / hard-doped PZT material properties under large signal excitation and impact on the design choice

Mangeot¹

2016

J. vibroeng.

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Multilayer piezoelectric actuators operating in quasi-static conditions under high electrical field find more and more applications in demanding environments, such as in the field of aerospace. Naturally, increasing amounts of data are being published on the behavior of PZT materials under large signal conditions. However, the information is often incomplete and not directly usable by mechanical design engineers. Using a pragmatic approach, the present work aims at drawing a complete set of parameters for designers to use when selecting a piezoelectric actuator, in particular for applications at elevated temperature (up to 200 °C). For the design process, it is important to characterize apparent capacitance, apparent losses, free stroke, blocking force and height according to temperature. In addition, non-linear effects such as creep must be considered. The present paper focuses mostly on apparent capacitance, losses and displacement. The evolution of capacitance with field is not linear and strongly temperature dependent. Measurements on NCE51 (soft-doped) and NCE46 (hard-doped) indicate a very different behavior. As signal amplitude increases, capacitance increases, reaches a maximum then decreases. This maximum shifts with temperature, so that at 200 °C, NCE51 reaches a maximum at 0,8 kV/mm while NCE46 peaks at 1,8 kV/mm. Results are presented also for the apparent loss factor (tangent) and free displacement. At 200 °C, NCE51 and NCE46 provide respectively 23 % and 15 % additional free displacement. Furthermore, the loss factor at maximum field decreases for NCE51, so the basis for material choice (soft-doped or hard-doped) is challenged. Using these measurements, the operating envelope of the actuators can be calculated for different temperatures. The comparison of the two materials highlights the advantage of NCE51 at low frequency. At high frequency, NCE46 maintains an advantage, particularly for energy-intensive applications.

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“…The effect of the geometry parameters, material selection, and epoxy bonding layers in the piezoelectric actuator was revealed in detail. A thorough study on actuators destined for the active control of a helicopter rotor through the use of trailing edge flaps was conducted by Mangeot et al [9]. Among the number of presented concepts of mechanical amplification was one where the strain is concentrated at specific hinge points through the use of a deformable frame.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric control of the static behaviour of flextensional actuators with constricted hinges

Przybylski

2014

Smart Mater. Struct.

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The objective of this paper is to present the mathematical modelling and computational testing of the static operational performance and effectiveness of flextensional actuators comprised of two rectilinear or initially deflected beams placed equidistantly from a centrally located piezoceramic stack in the form of a rod. The beams are mounted by stiff links with an offset to a piezoelectric transformer. A monolithic hinge lever mechanism is applied by cutting constricted hinges at the links to generate and magnify the in-plane displacement created by the application of a voltage to the piezorod. Structures of such a type have been commonly used as passive or active actuators since the manufacturing of the mechanism’s prototypes in the form of Moonie or cymbal actuators. An analytical model of the actuator is developed on the basis of stationary values of the total potential energy principle with the use of the von Kármán non-linear strains theory. During the numerical computations, the deflection and internal axial force generated by both the externally distributed load and the the application of an electric field are determined by changing the actuator properties such as the distance between the beams and the rod, the amplitude of the beam’s initial displacement as well as the stiffness of the constricted hinges. Additionally, the application of structure prestressing is considered to avoid an undesired stretching of the piezo stack. It has been shown that for the flextensional actuator with a very high flexibility of constricted hinges, the generated transverse displacement is limited by the maximum electric field as the characteristic property for each piezoceramic material. A vast number of numerical results exhibit the mechanical responses of the transducer of different geometrical and physical properties to piezoelectric stimulation; this has potential applications in the design process of such actuators.

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Investigation of large signal properties of quasi-static lead zirconate titanate actuators at elevated temperature

Cited by 4 publications

References 14 publications

Thermo-piezo-elastic analysis of amplified piezoceramic actuators using a refined one-dimensional model

Thermo-piezo-elastic analysis of amplified piezoceramic actuators using a refined one-dimensional model

Temperature dependence of soft-doped / hard-doped PZT material properties under large signal excitation and impact on the design choice

Piezoelectric control of the static behaviour of flextensional actuators with constricted hinges

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