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Acoustic lagging of pipes

Munjal, ML (1998) Acoustic lagging of pipes. In: Noise & Vibration Worldwide, 29 (11). pp. 14-16.

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Acoustic lining on the inside is a very efficient method of controlling noise. However, pipelines of noisy air or steam flow systems are often lagged on the outside with an acoustically absorptive, highly porous material which in turn is covered with a thin impervious (metallic) jacket. This would not help in reducing axial transmission of noise, but would provide considerable transverse insertion loss (reduction in break-out noise). The effect of this composite lagging has been modelled by the author recently. Here, results of parametric studies are presented in order to help engineers in reducing noise from existing flow systems that cannot be opened up for providing acoustic lining on the inside.

Item Type: Journal Article
Publication: Noise & Vibration Worldwide
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 12 Jan 2007
Last Modified: 02 May 2011 08:56
URI: http://eprints.iisc.ac.in/id/eprint/9292

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