首页> 外文会议>1996 Symposium on Smart Materials, Structures, and MEMS >Frequency dispersion and field dependence in the thickness mode material constants of PVDF-TRFE copolymers made by AMP Sensors Ltd.
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Frequency dispersion and field dependence in the thickness mode material constants of PVDF-TRFE copolymers made by AMP Sensors Ltd.

机译:AMP Sensors Ltd.制造的PVDF-TRFE共聚物在厚度模式材料常数中的频散和场依赖性

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Abstract: A set of thickness resonators of PVDF-TrFE copolymerhave been characterized as a function of the frequencyand DC bias. The first six resonance peaks in theimpedance spectra were analyzed to determine the degreeof frequency dispersion in the complex elastic,piezoelectric, and dielectric constants. Modeling thedispersion in the material constants as a polynomial inthe frequency f produced an excellent fit to the dataover the 1 - 30 MHz frequency range. The samples werethen tested for non- linearity by analyzing thefundamental resonance as a function of a DC bias field.The field dependence of the PVDF-TrFE samples was muchsmaller than for comparable samples of a soft PZT.!11
机译:摘要:表征了一组PVDF-TrFE共聚物的厚度谐振器,它是频率和直流偏置的函数。分析了阻抗谱中的前六个共振峰,以确定复数弹性,压电和介电常数中的频率分散程度。将材料常数中的色散建模为频率f的多项式,可以很好地拟合1-30 MHz频率范围内的数据。然后通过分析基本共振随DC偏置场的变化来测试样品的非线性.PVDF-TrFE样品的场依赖性比软PZT的可比样品小得多!11

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