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Surface tension effect on sound absorption characteristics of a cavity-backed semi-permeable membrane

Zainulabidin, Mohd Hafeez and Wan, Lauren M. and Ismail, Al Emran and Kasron, Md Zainorin (2014) Surface tension effect on sound absorption characteristics of a cavity-backed semi-permeable membrane. In: International Integrated Engineering Summit (IIES 2014), 1-4 December 2014, Universiti Tun Hussein Onn Malaysia, Johor.

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Abstract

This paper describes the analysis on the characteristics of semi-permeable membrane sound absorber. The effects of membrane surface tension on the sound absorption characteristics were investigated. The characteristics of the membrane absorber were measured experimentally in terms of Sound Absorption Coefficient, α and Noise Reduction Coefficient, NRC. The membrane is made of a thin, flexible, semi-permeable latex material and the tests were carried out by using impedance tube method according to ISO 10534-2 standard. The results showed that the surface tension has significant influence on the sound absorption characteristics. For the parameters used in the laboratory work, the specimen with un-stretched surface tension has the best absorption performance

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: membrane; noise reduction; sound absorption; surface tension
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Engineering Mechanics
Depositing User: Mrs. Nurhayati Ali
Date Deposited: 10 Mar 2015 08:27
Last Modified: 12 May 2015 08:56
URI: http://eprints.uthm.edu.my/id/eprint/6342
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