Abstract

A new way of determining the dielectric and electromechanical characteristics of piezoelectric materials with high elastic losses is proposed. The complex electrophysical parameters of a ceramic matrix piezocomposite (a PZT-type porous ferro-piezoceramic with randomly distributed pores) are measured. The frequency dependences of the complex parameters are measured via piezoresonance spectra analysis. Anomalies of the frequency dependences of the complex elastic moduli of ceramic-matrix piezocomposites are revealed and interpreted.

中文翻译：

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陶瓷基压电复合材料的声波谱

摘要

提出了一种确定高弹性损耗压电材料介电和机电特性的新方法。测量了陶瓷基压电复合材料（具有随机分布的孔的PZT型多孔铁-压电陶瓷）的复杂电物理参数。复杂参数的频率相关性通过压电谐振频谱分析进行测量。揭示并解释了陶瓷基压电复合材料的复弹性模量与频率的关系。