Properties of fine scale piezoelectric PZT fibers with different Zr content

Steinhausen, R.; Hauke, T.; Beige, H.; Watzka, Winfried; Lange, U.; Sporn, D.; Gebhardt, Sylvia; Schönecker, Andreas

doi:10.1016/s0955-2219(01)00041-3

Cited by 32 publications

(19 citation statements)

References 7 publications

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“…Recently, due to the design of piezocomposites on a greatly reduced scale and the use of PZT fibers instead of piezoelectric bars [7][8][9][10], new applications toward electromechanical sensors and actuators have become possible. But, because they are now much smaller than the wavelength of interest, homogenization techniques are necessary to describe the behavior of these piezocomposites [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Finite element and asymptotic homogenization methods applied to smart composite materials

Berger

Gabbert

Köppe

et al. 2003

Computational Mechanics

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The piezoelectric effect is studied for bending and traction tests for two types of structure configurations: homogeneous and composite structures. Mechanical displacements are calculated for traction and bending tests, using FEM for the homogeneous body, where the input material properties are taken from the overall coefficients reported by the Asymptotic Homogenization Method (AHM). A brief theoretical description about the basics of the piezoelectric finite elements and the AHM is given. On the other hand, the calculations of the mechanical displacements are done for the composite structure using FEM where the real data of the material parameters for cylindrical fibers (PZT-5) embedded in a matrix (elastic isotropic polymer) were taken from reported references. A comparison between the results obtained using AHM + FEM and FEM for the homogeneous and the composite structures respectively is reported and shows a favorable result.

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Section: Introductionmentioning

confidence: 99%

Finite element and asymptotic homogenization methods applied to smart composite materials

Berger

Gabbert

Köppe

et al. 2003

Computational Mechanics

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“…These results prompt us to select piezoceramic fibers with lower aspect ratio for higher k t values. By these trends the demand for narrow fiber diameters increases which require high end technologies in the manufacturing process of 1-3 piezocomposites [7,[17][18][19][20][21].…”

Section: Numerical Evaluation -Implementation Of Finite Element Methodsmentioning

confidence: 99%

Characterization of 1-3 piezoelectric polymer composites - a numerical and analytical evaluation procedure for thickness mode vibrations

Rao¹,

Prasad²

2010

Condens. Matter Phys.

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Biomedical transducers widely employ piezoceramic polymer composites with 1-3 connectivity. The research is aimed at determining the effective material properties of these composites in the micrometer scale by simulation. Volume fraction of piezoceramic in the composite plays an important role in composite material properties as studied by several researchers. It is also noted that the fiber aspect ratio (a/l) also affects the composite material properties. Therefore it is intended to determine the effective material properties both analytically and by simulation using computer simulation software program ANSYS which implements finite element method (FEM). In the present work piezoelectric fiber composites are modeled, analyzed and then the results are verified by using analytical equations. Important conclusions are drawn to select the piezocomposite materials for transducer applications.

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“…A rough estimation following Ref. [6] shows that neglecting the mechanical clamping minimises the polarisation by less than 5%. Accordingly, the deviation between the composite and the fibre strains is smaller than 7% for all samples.…”

Section: Characterisationmentioning

confidence: 99%