Conveners
A10.01 Acoustic, vibroacoustic and elastic metamaterials: P474
- Bart Van Damme (Empa, Materials Science and Technology)
- Steffen Marburg (Technical University of Munich)
A10.01 Acoustic, vibroacoustic and elastic metamaterials: S060
- Bart Van Damme (Empa, Materials Science and Technology)
- Steffen Marburg (Technical University of Munich)
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Letizia Chisari (University of Sussex)10/09/2026, 15:00A10 Materials and Metamaterials
The interaction between the enclosure and the acoustic back radiation generated by a loudspeaker driverplays a crucial role in shaping the overall emission characteristics of the loudspeaker system. In this study,Subwavelength Corrugated Surfaces (SCSs), a classof acoustic metasurfaces, are proposed to passivelycontrol the internal propagation of acoustic back radiation and its angular...
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Emilia Żak-Stefanowska (AGH University of Krakow)10/09/2026, 16:20A10 Materials and Metamaterials
The growing use of design methods based on machine learning and optimization has increased the need for methods capable of generating large, high-quality acoustics datasets. To address this, we present a stochastic 3D geometry generation algorithm for irregular, ventilated acoustic metamaterials that support resonant behavior in sound transmission loss applications. The method operates on a...
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Michał A. Niedzielczyk (Institute of Fundamental Technological Research)10/09/2026, 16:40A10 Materials and Metamaterials
This paper explores the evolution of fibrous enhancements in labyrinthine acoustic metamaterials, transitioning from stochastic fibrous fillers to programmable 3D-printed infill. While previous studies demonstrated that manual packing of natural fibres (e.g., dried dill) into labyrinthine slits significantly enhances low-frequency absorption, it suffers from manufacturing difficulties and...
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Stepan Avetisov (Aix-Marseille Univ., CNRS, Centrale Marseille, LMA)10/09/2026, 17:00A10 Materials and Metamaterials
Modeling the vibration of large-scale disordered systems presents a significant computational challenge due to the breakdown of translational symmetry. This contribution introduces an efficient numerical framework for characterizing wave propagation in weakly disordered periodic media. Utilizing a Floquet-based approach, we investigate the impact of stochastic structural perturbations,...
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Adam Cavanagh (University of Southampton)10/09/2026, 17:20A10 Materials and Metamaterials
Locally resonant vibro-acoustic metamaterial panels have been shown to offer high sound transmission loss due to their stopband behaviour. Such treatments can significantly reduce the reradiation of sound energy in the stopband by reducing the local vibration of the panel. However, the increased transmission loss occurs over a narrow frequency band and is usually followed by a pronounced...
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Nicolas Herrera-Leon (University of Coimbra, Dep. Eng. Civil)10/09/2026, 17:40A10 Materials and Metamaterials
Sonic Crystals (SCs) offer a promising alternative to traditional noise barriers through the creation of spectral band gaps. However, the performance of rigid scatterers is often limited by narrow attenuation zones. This study investigates the enhancement of SC barriers by utilizing a novel porous concrete matrix modified with recycled rubber shreds or cork powder.Initially, the acoustic...
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Juan Pablo Escudero (LAUM, UMR 6613, IA-GS, CNRS, Le Mans Université)10/09/2026, 18:00A10 Materials and Metamaterials
The design process of a wiremesh grating can be simplified by replacing the air-host medium by a host-porous material. Hence, the new setup allows frameless wiremeshes while preserving broadband resistance of the layers. In this work, we study a porous material with an embedded grating made of inclined wiremeshes. The proposed structure is analyzed using the effective medium approximation and...
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