Broadband acoustic meta-liner with metal foam approaching causality-governed minimal thickness
Acoustic absorbers based on resonant cavities or porous materials have been extensively
investigated for developing acoustic liners but still suffer from narrow working frequency …
investigated for developing acoustic liners but still suffer from narrow working frequency …
Optimization and Comparative Analysis of micro-perforated panel sound absorbers: A study on structures and performance enhancement
In this study, three MPP (micro-perforated panels) absorber configurations (simple, series,
parallel) were investigated via the response surface method (RSM) to broaden the …
parallel) were investigated via the response surface method (RSM) to broaden the …
Ultra-broadband sound absorption performance of a multi-cavity composite structure filled with polyurethane
S Xie, Z Li, H Yan, S Yang - Applied Acoustics, 2022 - Elsevier
In order to improve the sound absorption performance of the resonator, porous materials are
introduced, an acoustic metamaterial structure (P_TMCCR) composed of a tunable multi …
introduced, an acoustic metamaterial structure (P_TMCCR) composed of a tunable multi …
Realization of a thin and broadband microperforated panel (MPP) sound absorber
Microperforated panel (MPP) absorber progress has continued with various configurations
for a relatively narrow bandwidth. Serial, parallel, and a combination of serial and parallel …
for a relatively narrow bandwidth. Serial, parallel, and a combination of serial and parallel …
Acoustical performance of a wavy micro-perforated panel absorber
In this study, the sound absorption performance of a wavy micro-perforated panel absorber
(WMPPA) is investigated. First, a numerical model is established to calculate the sound …
(WMPPA) is investigated. First, a numerical model is established to calculate the sound …
[HTML][HTML] Acoustic behaviour of 3D printed titanium perforated panels
A Arjunan, A Baroutaji, A Latif - Results in Engineering, 2021 - Elsevier
Titanium alloys such as Ti6Al4V is amongst the most widely studied metallic materials in the
broad context of metal 3D printing. Although the mechanical performances are well …
broad context of metal 3D printing. Although the mechanical performances are well …
[HTML][HTML] Design of a broadband composite noise reduction metamaterial with integrated vibration reduction and sound absorption and insulation
Y Li, J Zhang, J Li, S Guo - Materials & Design, 2024 - Elsevier
In traditional noise and vibration control problems, researchers typically concentrate on a
single type of sound insulation, sound absorption, or vibration reduction. It is not enough for …
single type of sound insulation, sound absorption, or vibration reduction. It is not enough for …
Wideband sound absorption of a double-layer microperforated panel with inhomogeneous perforation
Micro-perforated panel (MPP) absorber is increasingly gaining popularity as an alternative
sound absorber in buildings compared to the well-known synthetic porous materials. A …
sound absorber in buildings compared to the well-known synthetic porous materials. A …
Perfect low-frequency sound absorption of rough neck embedded Helmholtz resonators
L Zhang, F Xin - The Journal of the Acoustical Society of America, 2022 - pubs.aip.org
In this paper, an acoustic metamaterial, composed of rough neck embedded Helmholtz
resonators, is proposed to achieve perfect sound absorption in the low-frequency range. The …
resonators, is proposed to achieve perfect sound absorption in the low-frequency range. The …
Vibration and damping analysis of a thin finite-size microperforated plate
Microperforated plates (MPP) are commonly used to absorb acoustic waves in sound control
technologies. However, less is known concerning the added damping exhibited by thin finite …
technologies. However, less is known concerning the added damping exhibited by thin finite …