Acoustic performance of metallic foams

Arjunan, Arun, Praveen, Ayyappan S, Olabi, Abdul G and Wang, Chang J (2019) Acoustic performance of metallic foams. In: Reference module in materials science and materials engineering. Elsevier, pp. 1-16. ISBN 9780128035818

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Abstract

Metallic foams are among the most promising class of materials due to their unique mechanical properties combining low mass with high stiffness, excellent energy absorption, and vibroacoustic damping. Consequently, noise control using methodically engineered metallic foams has received increased attention from both industrial and scientific community. Accordingly, this paper aims to present the mechanism of sound absorption along with the experimental and theoretical procedure that can be used to classify metallic foams. Additionally, the influence of design parameters on the resulting sound absorption coefficient of closed and open-cell metallic foams are explored. While Aluminium foams used to dominate the literature when it comes to acoustics, recent studies have reported Nickel-Inconel superalloy and Copper foams as having superior sound absorption coefficients.

Item Type: Book Section
Keywords: Aluminium; Copper; Impedance tube; Metallic foams; Nickel-Inconel; Open and closed cell; Porous materials; Prediction models; Sound absorption coefficient
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Research Centres and Groups: Dynamics, Control and Vehicle Research Group
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA0174 Engineering design
Depositing User: Chang Wang
Date Deposited: 04 Apr 2019 14:12
Last Modified: 04 Apr 2019 14:12
URI: http://sro.sussex.ac.uk/id/eprint/83021
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