期刊
ULTRASONICS
卷 49, 期 4-5, 页码 424-431出版社
ELSEVIER
DOI: 10.1016/j.ultras.2008.11.001
关键词
Transmission; Structured materials; Piezoelectricity
This paper deals with the transmission of acoustic waves through multilayered piezoelectric materials. It is modeled in an octet formalism via the hybrid matrix of the structure. The theoretical evolution with the angle and frequency of the transmission coefficients of ultrasonic plane waves propagating through a partially depoled PZT plate is compared to finite element calculations showing that both methods are in very good agreement. The model is then used to study a periodic stack of 0.65PMN-0.35PT/0.90PMN-0.10PT layers. The transmission spectra are interpreted in terms of a dispersive behavior of the critical angles of longitudinal and transverse waves, and band gap structures are analysed. Transmission measurements confirm the theoretical calculations and deliver an experimental validation of the model. (C) 2008 Elsevier B. V. All rights reserved.
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