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Acoustic transmission in slabs of compacted composites
Author(s) -
Salamatov E. I.
Publication year - 2009
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200844267
Subject(s) - slab , materials science , composite material , finite difference time domain method , dispersion (optics) , transmission (telecommunications) , composite number , ceramic , acoustic dispersion , optics , structural engineering , physics , telecommunications , engineering
Acoustic transmission through slabs of two‐dimensional composites modeling nanoceramics obtained by compacting in the presence of a plasticizer, is studied by the finite‐difference time‐domain (FDTD) method. A frequency analysis of the signal transmitted through a composite slab suggests that in the phonon spectrum of such systems there exists a gap, the position of which coincides with the gap location in an infinite disordered periodic composite. The effect of the dispersion of the grain‐size distribution function on the acoustic transmission in ceramics is investigated. The possibility of using such systems as insulators and filters for gigahertz‐range elastic waves is discussed. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)