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Modelling and optimisation of sound absorption in replicated microcellular metals

Otaru, Abdulrazak J.; Morvan, Herve P.; Kennedy, A.R.

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Authors

Abdulrazak J. Otaru

Herve P. Morvan

A.R. Kennedy



Abstract

Wilson's poroacoustic model has been shown to be an accurate predictor of sound absorption in porous metals with bottleneck type structures. When used to optimise pore structures, using porosity and permeability as variables, the most broadband absorption is predicted for the highest porosity achievable (approximately 70%) and for a permeability of the order 10−10 m2. Although performance close to that for glass wool is not possible, with these porosities, specific strength and stiffness exceeding those for many polymers are obtained, making these materials viable for load bearing components with credible soundproofing.

Citation

Otaru, A. J., Morvan, H. P., & Kennedy, A. (2018). Modelling and optimisation of sound absorption in replicated microcellular metals. Scripta Materialia, 150, 152-155. https://doi.org/10.1016/j.scriptamat.2018.03.022

Journal Article Type Article
Acceptance Date Mar 13, 2018
Online Publication Date Mar 20, 2018
Publication Date Jun 30, 2018
Deposit Date Mar 27, 2018
Publicly Available Date Mar 29, 2024
Journal Scripta Materialia
Print ISSN 1359-6462
Electronic ISSN 1359-6462
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 150
Pages 152-155
DOI https://doi.org/10.1016/j.scriptamat.2018.03.022
Keywords Porous material; Simulation; Modelling; Acoustic; Permeability
Public URL https://nottingham-repository.worktribe.com/output/944152
Publisher URL https://www.sciencedirect.com/science/article/pii/S135964621830174X?via%3Dihub

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