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Obstacles in acoustic waveguides becoming "invisible" at given frequencies

Anne-Sophie Bonnet-Ben Dhia 1 Sergei Nazarov 2
1 POEMS - Propagation des Ondes : Étude Mathématique et Simulation
Inria Saclay - Ile de France, UMA - Unité de Mathématiques Appliquées, CNRS - Centre National de la Recherche Scientifique : UMR7231
2 IPME - Institute of Mechanical Engineering Problems [St. Petersburg]
Abstract : We prove the existence of gently sloping perturbations of walls of an acoustic two-dimensional waveguide, for which several waves at given frequencies pass by the created obstacle without any distortion or with only a phase shift.
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https://hal.inria.fr/hal-00937689
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Submitted on : Tuesday, January 28, 2014 - 5:06:38 PM
Last modification on : Friday, January 22, 2021 - 11:54:03 AM

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Anne-Sophie Bonnet-Ben Dhia, Sergei Nazarov. Obstacles in acoustic waveguides becoming "invisible" at given frequencies. Acoustical Physics / Akusticheskii zhurnal, MAIK Nauka/Interperiodica, 2013, 59(6), pp.633--639. ⟨10.1134/S1063771013050047⟩. ⟨hal-00937689⟩

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