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On the acoustics of sonic composites
Author(s) -
Girip Iulian
Publication year - 2016
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201610087
Subject(s) - materials science , composite material , spheres , epoxy , point (geometry) , acoustics , polarization (electrochemistry) , matrix (chemical analysis) , structural acoustics , physics , geometry , chemistry , mathematics , vibration , astronomy
The primary goal of this paper is to propose an alternative method for obtaining the band structures of the 3D sonic composites without/ with point defects. The point defects are vacancies or foreign interstitial atoms which are supported by the interfaces between the hollow spheres and the matrix. The proposed method is used to simulate a sonic plate composed of an array of acoustic scatterers which are piezoceramic hollow spheres embedded in an epoxy matrix. The scatterers are made from functionally graded materials with radial polarization [1, 2]. (© 2016 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)