A formulation for studying the effect of random variation in the transfer matrix on the attenuation behavior of disordered one-dimensional bi-periodic layered structures is developed. This formulation, however, can be used for both stochastically and deterministically disordered systems. The mean an
Properties of elastic waves in quasiregular structures with planar defects
โ Scribed by H. Aynaou; V.R. Velasco; A. Nougaoui; E.H. El Boudouti; D. Bria
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 682 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0749-6036
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โฆ Synopsis
We have studied the elastic waves in quasiregular structures following the Fibonacci and Rudin-Shapiro sequences, and having planar defects, that is breaks of the quasiregular structure in different parts of the system. It is seen that the different kinds of defects produce effects on different ranges of the frequency spectrum, and can introduce more localized states in the gaps, or modify the frequencies of the states in the gaps. We have also studied the phase time and transmission coefficients, thus seeing how these localized modes can be used as frequency filters.
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