Improving Piezoelectric Sensitivity

Abstract

The piezoelectric sensitivity of the composite is described in terms of four types of the piezoelectric coefficients, $d_{ij}^{*}$, $e_{ij}^{*}$, $g_{ij}^{*}$, and $h_{ij}^{*}$. The role of each type of the piezoelectric coefficients and its merit in determining the PS in composites with various microgeometric features are discussed. Diagrams that link electric and mechanical fields and contain the four types of the piezoelectric coefficients are represented for the direct and converse piezoelectric effects. Examples of orders-of-magnitude of the aforementioned piezoelectric coefficients are given for modern composites based on single crystals. Some ways for improving the piezoelectric sensitivity of the composites are discussed.

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