103 citations · 251 across the 9 of their papers we have counts for
9 papers
Control of acoustic absorption in 1D scattering by indirect coupled resonant scatterers
A. Merkel, G. Theocharis, O. Richoux +2
We experimentally report perfect acoustic absorption through the interplay of the inherent losses and transparent modes with high factor. These modes are generated in a two-por…
Propagating and evanescent properties of double-point defects in Sonic Crystals
V. Romero-García, J. V. Sánchez-Pérez, and L. M. Garcia-Raffi
Complex Band Structures and Multiple Scattering Theory have been used in this paper to analyze the overlapping of the evanescent waves localized in point defects in Sonic Crystals.…
Analysis of the wave propagation properties of a periodic array of rigid cylinders perpendicular to a finite impedance surface
V. Romero-García, J. V. Sánchez-Pérez, L. M. Garcia-Raffi
The effect of the presence of a finite impedance surface on the wave propagation properties of a two-dimensional periodic array of rigid cylinders with their axes perpendicular to…
Theoretical and experimental evidence of level repulsion states and evanescent modes in sonic crystal stubbed waveguides
V. Romero-García, J. O. Vasseur, L. M. Garcia-Raffi +1
The complex band structures calculated using the Extended Plane Wave Expansion (EPWE) reveal the presence of evanescent modes in periodic systems, never predicted by the classical…
Level repulsion and evanescent waves in sonic crystals
V. Romero-García, J. O. Vasseur, A. C. Hladky-Hennion +2
This work theoretically and experimentally reports the evanescent connections between propagating bands in periodic acoustic materials. The complex band structures obtained by solv…
Analytical model to predict the effect of a finite impedance surface on the propagation properties of a 2D Sonic Crystal
V. Romero-García, J. V. Sánchez-Pérez, L. M. Garcia-Raffi
The use of Sonic Crystals as environmental noise barriers has certain advantages from the acoustical and the constructive point of view with regard to conventional ones. One aspect…
Tunable wideband bandstop acoustic filter based on 2D multi-physical phenomena periodic systems
V. Romero-García, J. V. Sánchez-Pérez, L. M. Garcia-Raffi
The physical properties of a periodic distribution of absorbent resonators is used in this work to design a tunable wideband bandstop acoustic filter. Analytical and numerical simu…
Evidences of evanescent Bloch waves in Phononic Crystals
V. Romero-García, J. V. Sánchez-Pérez, S. Castiñeira-Ibáñez +1
We show both experimentally and theoretically the evanescent behaviour of modes in the Band Gap (BG) of finite Phononic Crystal (PC). Based on experimental and numerical data we ob…
Evanescent modes in Sonic Crystals: Complex relation dispersion and supercell approximation
V. Romero-García, J. V. Sánchez-Pérez, L. M. Garcia-Raffi
Evanescent modes in complete sonic crystals (SC) and SC with point defects are reported both theoretically and experimentally in this paper. Plane wave expansion (PWE) and, in gene…