Archives of Acoustics, 50, 1, pp. 17-23, 2025
10.24425/aoa.2025.153654

Experimental Characterization of Sound Absorption for Composite Panel Made of Perforated Plate and Membrane Foam Layer

Van-Hai TRINH
Institute of Vehicle and Energy Engineering, Le Quy Don Technical University
Viet Nam

Mu HE
School of Mechanical Science and Engineering, Huazhong University of Science and Technology
China

A recent key challenge in noise engineering is the development of structures or materials that achieve desirable acoustic performance in practical settings. Combinations of porous layers and perforated plates offer potential composite absorbers for various acoustic applications. The present work conducts experimental characterizations of sound absorption performance of absorbers based on membrane foams combined with perforated plates. Membrane foams with the well-controlled cell size and porosity are fabricated by milli-fluidic tools, whereas perforated plates are made within a tuned perforation ratio. The three-microphone method is used to perform the acoustic measurements. The results obtained from ten combination samples reveal that the sound absorption behavior of the foam-based layers can be successfully tailored and improved by a thin perforated plate within a reasonable hole diameter and spacing while maintaining the total thickness of the composite absorber.
Keywords: membrane foam; monodisperse; perforated plate; composite absorber; sound absorption
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Copyright © 2025 The Author(s). This work is licensed under the Creative Commons Attribution 4.0 International CC BY 4.0.

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DOI: 10.24425/aoa.2025.153654