Experimental Observation of a Large Low-Frequency Band Gap in a Polymer Waveguide

Autor: Marco Miniaci, Matteo Mazzotti, Maciej Radzieński, Nesrine Kherraz, Pawel Kudela, Wieslaw Ostachowicz, Bruno Morvan, Federico Bosia, Nicola M. Pugno

Publikováno v: Frontiers in Materials, Vol 5 (2018)

The quest for large and low-frequency band gaps is one of the principal objectives pursued in a number of engineering applications, ranging from noise absorption to vibration control, and to seismic wave abatement. For this purpose, a plethora of com

Externí odkaz: https://doaj.org/article/77b75933c542448390e4bbc5b50f004f

Negative refraction of elastic waves in 2D phononic crystals: Contribution of resonant transmissions to the construction of the image of a point source

Autor: Anne-Christine Hladky-Hennion, Charles Croënne, Bertrand Dubus, Jérôme Vasseur, Lionel Haumesser, Dimitri Manga, Bruno Morvan

Publikováno v: AIP Advances, Vol 1, Iss 4, Pp 041405-041405-8 (2011)

Negative refraction properties of a two-dimensional phononic crystal (PC), made of a triangular lattice of steel rods embedded in epoxy are investigated both experimentally and numerically. First, experiments have been carried out on a prism shaped P

Externí odkaz: https://doaj.org/article/473131d87a994c6ab3f615f731aea4e4

Underwater metamaterial absorber with impedance-matched composite

Autor: Sichao Qu, Nan Gao, Alain Tinel, Bruno Morvan, Vicente Romero-García, Jean-Philippe Groby, Ping Sheng

By using a structured tungsten-polyurethane composite that is impedance matched to water while simultaneously having a much slower longitudinal sound speed, we have theoretically designed and experimentally realized an underwater acoustic absorber ex

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1f7f85e7090ac25f6c59c36140615c8
http://arxiv.org/abs/2111.02075

Proof of concept of a frequency-preserving and time-invariant metamaterial-based nonlinear acoustic diode

Autor: Federico Bosia, Marco Miniaci, Marco Scalerandi, Anastasiia Krushynska, Nicola M. Pugno, Antonio Gliozzi, Bruno Morvan

Publikováno v: Scientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
Scientific Reports
Scientific Reports, Nature Publishing Group, 2019, 9, pp.9560. ⟨10.1038/s41598-019-44843-7⟩
Scientific Reports, 9(1):9560. Nature Publishing Group

Acoustic filters and metamaterials have become essential components for elastic wave control in applications ranging from ultrasonics to noise abatement. Other devices have been designed in this field, emulating their electromagnetic counterparts. On

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f03d5ca95369481d40f88ffd4d1ced8
https://doi.org/10.1038/s41598-019-44843-7

Three-mode coupling of symmetric and antisymmetric lamb waves in plates with finite corrugations

Autor: O.R. Asfar, Bruno Morvan, Jean-Louis Izbicki

Publikováno v: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Institute of Electrical and Electronics Engineers, 2015, 62 (3), pp.524-530. ⟨10.1109/TUFFC.2014.006675⟩

Coupled-mode equations governing the amplitudes of the higher-order symmetric Lamb modes S1 and S2 with the antisymmetric mode A2 in an infinite elastic plate with sinusoidal surface corrugation over a finite length are obtained via multiple-scales a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d24e5bf21a7393ba8e1771ec1abaa878
https://doi.org/10.1109/tuffc.2014.006675