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Proceedings Paper

Controlling acoustic-wave propagation through material anisotropy
Author(s): Aref Tehranian; Alireza V. Amirkhizi; Jeffrey Irion; Jon Isaacs; Sia Nemat-Nasser
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Paper Abstract

Acoustic-wave velocity is strongly direction dependent in an anisotropic medium. This can be used to design composites with preferred acoustic-energy transport characteristics. In a unidirectional fiber-glass composite, for example, the preferred direction corresponds to the fiber orientation which is associated with the highest stiffness and which can be used to guide the momentum and energy of the acoustic waves either away from or toward a region within the material, depending on whether one wishes to avoid or harvest the corresponding stress waves. The main focus of this work is to illustrate this phenomenon using numerical simulations and then check the results experimentally.

Paper Details

Date Published: 8 April 2009
PDF: 4 pages
Proc. SPIE 7295, Health Monitoring of Structural and Biological Systems 2009, 72950V (8 April 2009); doi: 10.1117/12.816053
Show Author Affiliations
Aref Tehranian, Univ. of California, San Diego (United States)
Alireza V. Amirkhizi, Univ. of California, San Diego (United States)
Jeffrey Irion, Univ. of California, San Diego (United States)
Jon Isaacs, Univ. of California, San Diego (United States)
Sia Nemat-Nasser, Univ. of California, San Diego (United States)


Published in SPIE Proceedings Vol. 7295:
Health Monitoring of Structural and Biological Systems 2009
Tribikram Kundu, Editor(s)

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