Metal–Ceramic Composite Actuators

Sugawara, Yutaka; Onitsuka, Katsuhiko; Yoshikawa, Shoko; Xu, Qian; Newnham, R. E.; Uchino, Kenji

doi:10.1111/j.1151-2916.1992.tb04172.x

Cited by 210 publications

(87 citation statements)

References 2 publications

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“…For the free-standing boundary conditions that were adopted in the experiment, the eigenvalues of the first two bending modes are 1 …”

Section: ) Bending-mode Resonance Frequencymentioning

confidence: 99%

“…Recently, several new flextensional transducers have emerged. One is a metal-ceramic composite called the Moonie, 1 which has a metal cap mounted on a piezoelectric disk, such as PZT (lead zirconate titanate), with a cavity between the central part of the metal cap and the PZT. The Rainbow (reduced and internally biased oxide wafer) 2 is another transducer that is obtained by reducing one side of a piezoelectric disk, e.g., PLZT (lead lanthanum zirconate titanate).…”

Section: Introductionmentioning

confidence: 99%

“…3,4 The Moonie and the Rainbow show improved loading capabilities over the traditional bimorph. 1,2 Other new flextensional transducers include Cerambow 5 and Thunder. 5,6 It has been claimed 6 that a Thunder actuator 2.54 cm in diameter and 0.58 mm in thickness can generate displacement close to 200 m under the electric field of 15 kV/m.…”

Section: Introductionmentioning

confidence: 99%

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Electromechanical Behavior of PZT‐Brass Unimorphs

Aksay

Shih

1999

Journal of the American Ceramic Society

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We have examined the static and dynamic electromechanical responses of PZT-brass (piezoelectric-nonpiezoelectric) plate unimorphs of various brass/PZT thickness ratios. The study was performed both experimentally and theoretically. The static measurements showed that, given a PZT layer thickness, there exists a brass/PZT thickness ratio that gives the unimorph the highest static displacement under an applied field. The effects of geometric shape and external loading on the displacement of the unimorphs were also examined. The dynamic measurements showed that, given a PZT layer thickness, the bending-mode resonance frequencies increase with an increasing brass/PZT thickness ratio. These results were in good agreement with the theoretical predictions that were obtained with the plate geometry.

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“…For the free-standing boundary conditions that were adopted in the experiment, the eigenvalues of the first two bending modes are 1 …”

Section: ) Bending-mode Resonance Frequencymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electromechanical Behavior of PZT‐Brass Unimorphs

Aksay

Shih

1999

Journal of the American Ceramic Society

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“…To generate high displacements, there have been several new flextentional actuators developed in recent years, including the Rainbow, 7 Moonie, 8 Thunder, 9 and PrinDrex 10,11 actuators. A flextentional actuator generally has a piezoelectric coefficient gradient in the thickness direction.…”

Section: Introductionmentioning

confidence: 99%

Effect of a Transverse Tensile Stress on the Electric‐Field‐Induced Domain Reorientation in Soft PZT: In Situ XRD Study

Vartuli

Milius

et al. 2002

Journal of the American Ceramic Society

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The effect of a transverse tensile stress on the electric-fieldinduced 90°-domain reorientation in tetragonal lead zirconate titanate (PZT) near the morphotropic phase boundary was investigated in situ using X-ray diffraction (XRD). The XRD intensity ratio, I (002) /I (200) , which represents the ratio of the volume of the c-domains to that of the a-domains on the PZT surface, was examined as a function of the electric field at various stress levels. It was found that a transverse tensile stress changes the electric-field dependence of I (

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“…In order to amplify the displacement of piezoelectric actuators, a composite actuator called "Moonie" was design and fabricated [1][2][3]. It was a monomorph piezoelectric actuator bonded with metal cap.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric-fluid interaction finite element analysis of a valve-less piezoelectric pump

Uetsuji¹,

Kuramae²,

Tsuchiya³

2013

Computational Methods and Experimental Measurements XVI

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In this paper, a new composite actuator, which consists of a bimorph piezoelectric plate and a metal cap, was proposed for micro-TAS (Total Analysis Systems) which is widely used for chemical, biological and medical devises. The main objective of this work is to verify the displacement amplification introduced by a new design of composite actuator. At first, the proposed discshaped composite actuator was modeled and the static deflection was compared with conventional ones which are monomorph, bimorph actuators and a composite actuator called "Moonie". Additionally, the proposed composite actuator was applied to a valve-less pump in a Y-shaped fluid channel and a piezoelectric-fluid interaction finite element simulation was performed. Computations demonstrated the superior performance of the new composite actuator compared with conventional ones.

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Metal–Ceramic Composite Actuators

Cited by 210 publications

References 2 publications

Electromechanical Behavior of PZT‐Brass Unimorphs

Electromechanical Behavior of PZT‐Brass Unimorphs

Effect of a Transverse Tensile Stress on the Electric‐Field‐Induced Domain Reorientation in Soft PZT: In Situ XRD Study

Piezoelectric-fluid interaction finite element analysis of a valve-less piezoelectric pump

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