ARTICLE
Effects of viscoelastic and porous materials on sound transmission of multilayer systems
 
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1
Laboratory of Mechanics, Modelling and Production (LA2MP), National Engineering School of Sfax, University of Sfax, Sfax, Faculty of Sciences of Sfax, University of Sfax, Sfax
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Laboratory of Mechanics, Modelling and Production (LA2MP), National Engineering School of Sfax, University of Sfax, Sfax,
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Faculty of Sciences of Sfax, University of Sfax, Sfax
Publication date: 2018-10-20
 
Journal of Theoretical and Applied Mechanics 2018;56(4):961–976
 
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ABSTRACT
Multilayer structures allow obtaining good performance in acoustic insulation to eliminate unwanted noise in the medium and high frequencies in many applications such as building and transport industry. In this paper, the sound transmission of multilayer systems is stu- died using the Transfer Matrix Method (TMM). The studied multi-layered panels include elastic, viscoelastic and porous materials. Several configurations of multilayer systems are studied, and their corresponding transmission loss TL is computed. Also, the effects of po- rous material characteristics are studied to evaluate the impact of each parameter.
eISSN:2543-6309
ISSN:1429-2955