Effective elastic properties for unpoled barium titanate

Dent, Andrew C E; Bowen, Chris R.; Stevens, Ron; Cain, Markys G.; Stewart, M

doi:10.1016/j.jeurceramsoc.2007.02.031

Cited by 70 publications

(31 citation statements)

References 15 publications

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“…The Young's moduli of the matrices were taken to be equal to their E 0 measured by DMA in this study, and the Poisson's ratio was taken equal to 0.3. For the BaTiO 3 the Young's modulus was taken equal to 120 GPa and the Poisson's ratio equal to 0.35 [58]. The corresponding values of K and G to be introduced in the Eqs.…”

Section: Dynamic Mechanical Analysismentioning

confidence: 99%

The effect of processing conditions on the morphology, thermomechanical, dielectric, and piezoelectric properties of P(VDF-TrFE)/BaTiO3 composites

et al. 2012

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In this study (0-3) P(VDF-TrFE)/BaTiO 3 composites containing up to 60 vol% of ceramic phase were prepared by solvent casting or compression molding. Their thermomechanical, dielectric, and piezoelectric properties were investigated, and discussed in the light of the properties of the basic components, the processing route and the resulting morphology. The crystalline structure of the P(VDF-TrFE) matrix was found to be highly dependent on the processing route, while the structure of BaTiO 3 was not affected by any of the processing steps. The mechanical properties of the solvent cast materials showed a maximum at 30 vol% BaTiO 3 , while they increased monotonically with BaTiO 3 content for compression molded materials. This difference was attributed to a higher amount of porosity and inhomogeneities in the solvent cast composites. Permittivity as high as 120 and piezoelectric coefficient d 33 up to 32 pC/N were obtained for compression molded composites, and the observed decrease in d 33 with aging time was attributed to the effect of mechanical stress release in the polymer matrix.

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Section: Dynamic Mechanical Analysismentioning

confidence: 99%

The effect of processing conditions on the morphology, thermomechanical, dielectric, and piezoelectric properties of P(VDF-TrFE)/BaTiO3 composites

et al. 2012

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“…The material properties of the polarized PZT-5A are based on datasheets. Although several publications are available with elastic properties of non-poled barium titanite [11,12] no literature could be found with the complete material description of the non-polarized PZT-5A. Therefore, those stiffness properties have been derived from [13] assuming an isotropic material behavior while the Fig.…”

Section: Fe-investigation Of Afcmentioning

confidence: 99%

State of stress in piezoelectric elements with interdigitated electrodes

Paradies

Melnykowycz

2008

J Electroceram

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Finite element analyses have been performed on the representative volume element of piezoelectric elements with interdigitated electrodes (IDE). In these investigations the change of the piezoelectric material properties during polarization has been considered prior to additional service loads, e.g. mechanical loading. The numerical results obtained with a specially coded finite element routine are compared with a reference model given by the so called uniform field model. The model indicates stress concentrations at the tip of the finger electrode, which have been validated by experimental results. The modeling approach presented allows for a better understanding of the overall effects in piezoelectric materials with IDE.

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“…Finalmente, el voltaje generado V a se calcula como: (22) Donde es la fuerza aplicada y el módulo de Young del piezoeléctrico que oscila entre los 108 -120 GPa (Dent, 2007), generalmente se desea que sea lo más bajo posible para que el voltaje generado sea mayor.…”

Section: Figura 6 Curva De Resonancia De Un Transductor Piezoeléctricounclassified

Representación matemática y técnicas de caracterización para celdas piezoeléctricas, una revisión bibliográfica

Vásquez¹,

Becerra²

2017

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Fecha de recibido: Febrero 05 de 2017 | Fecha de aprobado: Abril 18 de 2017Resumen En este artículo se expone en forma autocontenida el esquema matemático que define el modelo piezoeléctrico, el cual se emplea para describir el comportamiento físico en los materiales capaces de crear carga eléctrica bajo la influencia de fuerzas mecánicas. Adicionalmente, se presentan algunas técnicas utilizadas en la caracterización eléctrica de celdas desarrolladas en grupos de investigación en contextos nacionales e internacionales, que trabajan en el desarrollo de fuentes de energía alternativas.Palabras clave: celdas piezoeléctricas, modelo matemático, caracterización.

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Effective elastic properties for unpoled barium titanate

Cited by 70 publications

References 15 publications

The effect of processing conditions on the morphology, thermomechanical, dielectric, and piezoelectric properties of P(VDF-TrFE)/BaTiO3 composites

The effect of processing conditions on the morphology, thermomechanical, dielectric, and piezoelectric properties of P(VDF-TrFE)/BaTiO3 composites

State of stress in piezoelectric elements with interdigitated electrodes

Representación matemática y técnicas de caracterización para celdas piezoeléctricas, una revisión bibliográfica

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