&lt;title&gt;Improving transverse actuation of piezoceramics using interdigitated surface electrodes&lt;/title&gt;

Hagood, Nesbitt W.; Kindel, R.; Ghandi, Kamyar; Gaudenzi, Paolo

doi:10.1117/12.152766

Cited by 114 publications

(64 citation statements)

References 12 publications

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“…The concept of interdigitated electrodes (IDEs) with piezoelectric fibers was first introduced by Hagood et al (1993) and Bent and Hagood (1997) since the 33-mode piezoelectric strain constant (50%-100% larger than that of the 31-mode) offered an intriguing design option to exploit inder bending deformation. The resulting active-fiber composite (AFC) structure was first characterized by Bent et al (Bent, 1997;Bent et al, 1995), and its properties were further investigated by others (Belloli et al, 2007;Berger et al, 2005;Brei and Cannon, 2004;Sodano, 2008, 2009) numerically and experimentally in next-generation efforts.…”

Section: Introductionmentioning

confidence: 99%

Coupling of experimentally validated electroelastic dynamics and mixing rules formulation for macro-fiber composite piezoelectric structures

Shahab

Ertürk

2016

Journal of Intelligent Material Systems and Structures

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Piezoelectric structures have been used in a variety of applications ranging from vibration control and sensing to morphing and energy harvesting. In order to employ the effective 33-mode of piezoelectricity, interdigitated electrodes have been used in the design of macro-fiber composites which employ piezoelectric fibers with rectangular cross section. In this article, we present an investigation of the two-way electroelastic coupling (in the sense of direct and converse piezoelectric effects) in bimorph cantilevers that employ interdigitated electrodes for 33-mode operation. A distributedparameter electroelastic modeling framework is developed for the elastodynamic scenarios of piezoelectric power generation and dynamic actuation. Mixing rules (i.e. rule of mixtures) formulation is employed to evaluate the equivalent and homogenized properties of macro-fiber composite structures. The electroelastic and dielectric properties of a representative volume element (piezoelectric fiber and epoxy matrix) between two neighboring interdigitated electrodes are then coupled with the global electro-elastodynamics based on the Euler-Bernoulli kinematics accounting for twoway electromechanical coupling. Various macro-fiber composite bimorph cantilevers with different widths are tested for resonant dynamic actuation and power generation with resistive shunt damping. Excellent agreement is reported between the measured electroelastic frequency response and predictions of the analytical framework that bridges the continuum electro-elastodynamics and mixing rules formulation.

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Section: Introductionmentioning

confidence: 99%

Coupling of experimentally validated electroelastic dynamics and mixing rules formulation for macro-fiber composite piezoelectric structures

Shahab

Ertürk

2016

Journal of Intelligent Material Systems and Structures

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“…Since such piezoelectric wafers do not produce direct anisotropic actuation, but exhibit in-plane isotropy and use the composite coupling effects to produce twist, the conventionally electroded piezoelectric fibre composite (PFC) was introduced by Bent to overcome deficiencies associated with monolithic piezoceramics [15]. In order to enhance the performance of monolithic ceramic actuators the interdigital electrode concept was introduced by Hagood et al [16]. By fusing the ideas of interdigital electrodes and PFC, the concept of AFC was introduced by Bent [17].…”

Section: Blade Modellingmentioning

confidence: 99%

Modelling and dynamic stability of a hingeless active fibre composite blade

Saxton

Afagh

2009

Arch Appl Mech

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The main focus of this investigation was to investigate dynamic stability of what is now commonly referred to as an active twist rotor blade. With the ultimate intention of controlling helicopter blade vibrations, active or smart materials embedded in the rotor blade in various arrangements as opposed to the conventional passive isolation devices and absorbers are used. Structurally integrated interdigitated piezoelectric fibre composite material is considered in this work. This active composite may be used in constructing the blade in place of or concurrent with, composite blades. This fibrous composite is able to twist the blade, when subjected to an electric field, due to its unique arrangement of active fibres. The paper begins with outlining the design for lay-up sequence of the active blade. This is followed by developing a complete structural and dynamic modelling of the equations of motion of the smart blades for hover flight. These equations are used to investigate dynamic stability of the steady state motion of the smart blades under parametric excitation. In closing, as a preliminary step to determine the actuation authority of the active fibres, the open-loop response of the blade to an impulsive type of actuation is also investigated.

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“…Through numerical analysis of half the local area between a pair of opposite electrodes of an interdigitated piezoelectric element, Hagood et al found that there are quite different results between the full model and local area because the latter ignored the influence from the other part [24]. Here, a numerical simulation on the static analysis between neighboring electrodes of the IEPCM was also studied in order to compare the difference between the full model and local area.…”

Section: Modeling Of Iepcmmentioning

confidence: 99%

“…Zhang et al [22] documented that the 1-3 type PCM with IEs possessed a high piezoelectric constant and superior orthotropic features with different receiving sensitivities for the stress waves from orthogonal directions. Hagood et al [23,24] studied the piezoelectric characteristics of a pure PZT wafer with IEs and its application criteria by simulating the method. Roundy et al [25] found that the harmonic resonant frequency of a PZT sheet with IEs is small and the resonance is more likely to happen, but its electromechanical coupling coefficient is lower than that of the general PZT.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis and Optimization on Piezoelectric Properties of 0–3 Type Piezoelectric Cement-Based Materials with Interdigitated Electrodes

et al. 2017

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Abstract:The health conditions of complicated concrete structures require intrinsic cement-based sensors with a fast sensing response and high accuracy. In this paper, static, modal, harmonic, and transient dynamic analyses for the 0-3 type piezoelectric cement-based material with interdigitated electrodes (IEPCM) wafer were investigated using the ANSYS finite element numerical approach. Optimal design of the IEPCM was further implemented with electrode distance (P), electrode width (W), and wafer density (H) as the main parameters. Analysis results show that the maximum stress and strain in the x-polarization direction of the IEPCM are 2.6 and 3.19 times higher than that in the y-direction, respectively; there exists no repetition frequency phenomenon for the IEPCM. These indicate 0-3 type IEPCM possesses good orthotropic features, and lateral driving capacity notwithstanding, a hysteresis effect exists. Allowing for the wafer width (W p ) of 1 mm, the optimal design of the IEPCM wafer arrives at the best physical values of H, W and P are 6.2, 0.73 and 1.02 mm respectively, whereas the corresponding optimal volume is 10.9 mm 3 .

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<title>Improving transverse actuation of piezoceramics using interdigitated surface electrodes</title>

Cited by 114 publications

References 12 publications

Coupling of experimentally validated electroelastic dynamics and mixing rules formulation for macro-fiber composite piezoelectric structures

Coupling of experimentally validated electroelastic dynamics and mixing rules formulation for macro-fiber composite piezoelectric structures

Modelling and dynamic stability of a hingeless active fibre composite blade

Numerical Analysis and Optimization on Piezoelectric Properties of 0–3 Type Piezoelectric Cement-Based Materials with Interdigitated Electrodes

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