Anisotropic Actuation with Piezoelectric Fiber Composites

Bent, Aaron A.; Hagood, Nesbitt W.; Rodgers, John P.

doi:10.1177/1045389x9500600305

Cited by 267 publications

(156 citation statements)

References 5 publications

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“…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. However, the AFC technology employed piezoelectric fibers with circular cross section that limited the interactions between fibers and electrodes, yielding low electromechanical coupling and high dielectric loss.…”

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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“…Pietrzakowski, 2012). The effective properties of the two-phase composite material of the PFC sub-layer are determined basing on the uniform field method, which is a generalization of the series and parallel mixing rules (Bent et al, 1995;Bent, Hagood, 1997). For example the outer PFC sub-layer covered by the ID electrode is shown in Fig.…”

Section: Sensor and Actuator Relationsmentioning

confidence: 99%

“…Firstly this concept was developed at MIT where round PZT fibers were applied. This type of composites known as piezoelectric fiber composites (PFCs) were investigated and presented by Bent et al (1995) for the d 31 mode actuation and then by Bent and Hagood (1997) for the stronger d 33 mode actuation. In this case interdigitated (ID) electrodes were used to direct the electric field in the fiber direction.…”

Section: Introductionmentioning

confidence: 99%

An Active Functionally Graded Piezocomposite Plate Subjected to a Stochastic Pressure

Pietrzakowski¹

2015

Archives of Acoustics

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In the paper the analysis of random vibration of an actively damped laminated plate with functionally graded piezoelectric actuator layers is presented. The simply supported plate is subjected to stochastic loading represented by a uniformly distributed pressure. The random input is assumed as a Gaussian stationary and ergodic process. The actuators are regarded as a multi-layer structure arranged of piezofiber composite sub-layers. The sub-layers differ each other with amount of PZT (lead-zirconate-titanate) fibers and are stacked to achieve a desired change of the PZT volume fraction through the actuator thickness. The gradation scheme of constituents and material properties are estimated by parabolic and power functions. Numerical simulations are performed to recognize the influence of the applied random excitations and the actuator properties gradations on the characteristics of the stochastic field of active plate deflection i.e. power spectral density, autocorrelation function and variance.

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“…A. Bent et al [5][6][7] and Macro Fiber Composite (MFC) that developed by W. K. Wilkie et al [8][9][10][11]. These piezoelectric composites are improved in reliability and mechanical strength compared to the conventional piezoelectric ceramics.…”

Section: Introductionmentioning

confidence: 99%

Output Voltage Characteristics of Piezoelectric Fiber/Aluminum Composites Fabricated by Interphase Forming/Bonding Method

Yanaseko

Asanuma

Chiba

et al. 2014

Trans. Mat. Res. Soc. Japan

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This paper describes the output voltage characteristics of the metal-core piezoelectric ceramic fiber/aluminum composites fabricated by the Interphase Forming/Bonding (IF/B) method. Piezoelectric materials are generally used as electric and mechanical energy transducers. When their devices are developed for fulfilling their functions, complicated electrode systems and resin layers for adhesion of the materials and the electrodes are usually needed, where depression of response and reliability, and complication of structure are caused. Additionally, as the metal-core piezoelectric ceramic fiber is brittle and reactive with molten aluminum, general fabrication processes such as diffusion bonding and casting are hard to be applied to embed it into an aluminum matrix. Therefore the IF/B method was used for embedding it in an aluminum matrix without fracturing it. In this study, a thin patch type device developed by the modified IF/B method was evaluated by a vibration test and an impact test. As the result, it was found that the output voltage from the device is proportional to its strain and the square root of the impact energy. In addition, the output voltage varies with its strain direction. Especially, at the strain direction 50.6 degrees, sign of the output voltage changes. Taking the above mentioned characteristics into consideration, this composite was found to be useful for structural health monitoring systems.

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Anisotropic Actuation with Piezoelectric Fiber Composites

Cited by 267 publications

References 5 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

An Active Functionally Graded Piezocomposite Plate Subjected to a Stochastic Pressure

Output Voltage Characteristics of Piezoelectric Fiber/Aluminum Composites Fabricated by Interphase Forming/Bonding Method

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