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Modelling and optimisation of sound absorption in replicated microcellular metals

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

Authors

Abdulrazak J. Otaru eaxao@exmail.nottingham.ac.uk

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.

Journal Article Type Article
Publication Date Jun 30, 2018
Journal Scripta Materialia
Print ISSN 1359-6462
Electronic ISSN 1359-6462
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 150
Pages 152-155
APA6 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. doi:10.1016/j.scriptamat.2018.03.022
DOI https://doi.org/10.1016/j.scriptamat.2018.03.022
Keywords Porous material; Simulation; Modelling; Acoustic; Permeability
Publisher URL https://www.sciencedirect.com/science/article/pii/S135964621830174X?via%3Dihub
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





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