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Proceedings Paper

Tunable acoustic metamaterial based on piezoelectric ceramic transducer
Author(s): Xiaohui Zhu; Jing Qiao; Guangyu Zhang; Qiang Zhou; Yingdan Wu; Longqiu Li
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Paper Abstract

In this paper, a tunable metamaterial consisting of periodic layers of steel, polyurea and piezoelectric ceramic transducer (PZT) was presented. The PZT layer in this structure was connected to an inductor L. Transfer matrix method was used to calculate the band structure of the sample. It was observed that an extremely narrow stop band was induced by the PZT layer with inductor L. This narrow stop band was attributed to the resonance circuit constituted by the piezoelectric layer, for the piezoelectric layer with electrodes could be seen as a capacitor. Further, homogenization was used to calculate the effective elastic constants of the sample. Results showed that the effective parameters of this structure behaved negative in the narrow stop band. The location of the narrow stop band was in the charge of inductor L, which could be used to design acoustic filters or noise insulators by changing the parameters of structure.

Paper Details

Date Published: 11 April 2017
PDF: 6 pages
Proc. SPIE 10164, Active and Passive Smart Structures and Integrated Systems 2017, 1016411 (11 April 2017); doi: 10.1117/12.2259963
Show Author Affiliations
Xiaohui Zhu, Harbin Institute of Technology (China)
Jing Qiao, Harbin Institute of Technology (China)
Guangyu Zhang, Harbin Institute of Technology (China)
Qiang Zhou, Harbin Institute of Technology (China)
Yingdan Wu, Harbin Institute of Technology (China)
Longqiu Li, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 10164:
Active and Passive Smart Structures and Integrated Systems 2017
Gyuhae Park, Editor(s)

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