The Acoustics and Mechanics of Porous Materials Research Group
The Acoustics and Mechanics of Porous Materials Research Group
The Acoustics and Mechanics of Porous Materials Research Group
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Design <strong>of</strong> metaporous materials10.90.8A > 0.9 for λ air ≈ 8×LAbsorption coefficient0.70.60.50.40.30.20.10ExperimentalFEMhomogeneous layer500 1000 1500 2000 2500 3000 3500 4000Frequency (Hz)Absorption associated with the use porous materials (HF)+Absorption associated with mode excitations (BF) due to irregularities or inclusions3D configurations, i.e., spheres, Helmholtz resonators...Structured microstructure, i.e., subwavelength resonators...Collab. Supméca, ENTPE, Univ. <strong>of</strong> Salford (ANR-Metaudible project, 2013-2017)Spin-<strong>of</strong>f compagny Metcoustic (funded by SATT, French Gov., <strong>and</strong> Local Ententities)– p.8/8
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