Theory of the acoustic signature of topological and morphological defects in SiC/porous SiC laminated ceramics
- 1 October 1997
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 82 (7) , 3618-3620
Abstract
The sensitivity of acoustic techniques to topological and/or morphological variations in SiC/porous SiC laminated ceramics is studied within the transfer matrix formalism. To implement this theoretical formalism, the mechanical properties of the SiC porous layers are calculated using the effective medium approximation of Kuster and Toksöz [Geophys. 39, 587 (1974)]. We show that topological defects have a stronger acoustic signature than morphological defects. Also, we observe that there are particular frequencies at which the defects do not present any acoustic signature.Keywords
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