Rights statement: This is the author’s version of a work that was accepted for publication in Scripta Materialia. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Scripta Materialia, 150, 2018 DOI: 10.1016/j.scriptamat.2018.03.022
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Modelling and optimisation of sound absorption in replicated microcellular metals. / Otaru, A.J.; Morvan, H.P.; Kennedy, A.R.
In: Scripta Materialia, Vol. 150, 06.2018, p. 152-155.Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Modelling and optimisation of sound absorption in replicated microcellular metals
AU - Otaru, A.J.
AU - Morvan, H.P.
AU - Kennedy, A.R.
N1 - This is the author’s version of a work that was accepted for publication in Scripta Materialia. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Scripta Materialia, 150, 2018 DOI: 10.1016/j.scriptamat.2018.03.022
PY - 2018/6
Y1 - 2018/6
N2 - 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.
AB - 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.
KW - Porous material
KW - Simulation
KW - Modelling
KW - Acoustic
KW - Permeability
U2 - 10.1016/j.scriptamat.2018.03.022
DO - 10.1016/j.scriptamat.2018.03.022
M3 - Journal article
VL - 150
SP - 152
EP - 155
JO - Scripta Materialia
JF - Scripta Materialia
SN - 1359-6462
ER -