Acoustic band-gap engineering using finite-size layered structures of multiple periodicity
نویسندگان
چکیده
The transmission coefficient of a layered structure made of glass and water was calculated using transfer matrix method and also measured as a function of frequency. It was found that acoustic band gaps can be created using only 3–4 cells of a two-phase layered structure. By introducing two or more periods into the layered structure, very sharp passbands and very broad stopbands can be engineered for acoustic waves. Such acoustic band-gap materials could be used for making high-quality acoustic filters, acoustic mirrors and vibration insulation devices in selective frequency range. © 1999 American Institute of Physics. @S0003-6951~99!01549-1#
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