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Abstract
The effective piezoelectric moduli of polycrystalline piezoelectric ceramics are calculated using a straightforward averaging method (a Voigt average) and a more rigorous effective‐medium theory recently developed for piezocomposites. The effects of polarization orientation within each crystallographic domain and the shape of the domain on the effective piezoelectric moduli are presented. The effective‐medium theory, which includes full coupling of the elastic and dielectric interactions, gives results in reasonable agreement with experimental ones.
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