What is it about?
Here is presents an hybrid acoustic material (HAM) is designed for broadband and low-frequency sound absorption based on the combination of two different materials: a porous layer (melamine foam) and a modified Helmholtz resonator with embedded necks (HRENs). The results of experimental tests confirmed that the HAM has broadband sound absorption and presented good agreement with an equivalent fluid model and numerical simulations.
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Why is it important?
Because this work contributes to the understanding of sound wave propagation and broadband absorption in acoustic materials composed of different materials combined.
Perspectives
Writing this article was a great pleasure as it has co-authors of the differents instituitions of the Brazil and differents researchs areas. We hope this article makes help the researchers of the area advance more about the topic.
GILDEAN ALMEIDA
Federal University of Santa Catarina
Read the Original
This page is a summary of: Broadband and low-frequency sound absorption of modified Helmholtz resonator combined with porous layer addition, Journal of Applied Physics, October 2022, American Institute of Physics,
DOI: 10.1063/5.0108807.
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