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Enhancing the absorption properties of acoustic porous plates by periodically embedding Helmholtz resonators
Abstract
This paper studies the acoustical properties of hard-backed porous layers with periodically embedded air filled Helmholtz resonators. It is demonstrated that some enhancements in the acoustic absorption coefficient can be achieved in the viscous and inertial regimes at wavelengths much larger than the layer thickness. This enhancement is attributed to the excitation of two specific modes: Helmholtz resonance in the viscous regime and a trapped mode in the inertial regime. The enhancement in the absorption that is attributed to the Helmholtz resonance can be further improved when a small amount of porous material is removed from the resonator necks. In this way the frequency range in which these porous materials exhibit high values of the absorption coefficient can be extended by using Helmholtz resonators with a range of carefully tuned neck lengths.
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Cited by
Acoustic Metamaterials: A Review of Theories, Structures, Fabrication Approaches, and Applications
Liao, G., Luan, C., Wang, Z., Liu, J., Yao, X., & Fu, J. (2021) · Advanced Materials Technologies · doi:10.1002/admt.202000787 · Cited by 267
Metadiffusers: Deep-Subwavelength Sound Diffusers
Jiménez, N., Cox, T. J., Romero-García, V., & Groby, J.-P. (2017) · Scientific Reports · doi:10.1038/s41598-017-05710-5 · Cited by 82
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Metadata
- Authors
- Groby, J.-P., Lagarrigue, C., Brouard, B., Dazel, O., Tournat, V., & Nennig, B.
- Venue
- The Journal of the Acoustical Society of America
- Publisher
- Acoustical Society of America (ASA)
- Published
- 2015-01-01
- Volume
- 137
- Issue
- 1
- Pages
- 273-280
- ISSN
- 0001-4966 (ISSN-L)
- 1520-8524
- OpenAlex
- W2038741285
- Cited by
- 192
- References
- 0
- FWCI
- 5.35
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Enhancing the absorption properties of acoustic porous plates by periodically embedding Helmholtz resonators. https://app.cochat.ai/papers/10.1121/1.4904534
- The paper
- Groby, J.-P., Lagarrigue, C., Brouard, B., Dazel, O., Tournat, V., & Nennig, B. (2015). Enhancing the absorption properties of acoustic porous plates by periodically embedding Helmholtz resonators. The Journal of the Acoustical Society of America. https://doi.org/10.1121/1.4904534
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