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A Study on Determining the Transmission Loss of Water-Borne Noise Silencer in a Sea-Connected Piping System  

Park, Kyung-Hoon (국방과학 연구소)
Publication Information
The Journal of the Acoustical Society of Korea / v.26, no.6, 2007 , pp. 286-292 More about this Journal
Abstract
The dominant source of noise in a sea-connected piping system is usually due to a seawater cooling pump which circulates seawater to operate onboard equipments normally, and so its water-borne noise with some tonal frequencies should be reduced using proper silencers. In order to obtain the transmission loss of water-borne noise silencers experimentally the present paper suggests a transfer function technique that acoustic wave in the piping system is decomposed into its incident and transmitted components when the reflection at the termination of the system exists. Good agreement in the interested frequency range with theory and the proposed technique shows the validity of the technique.
Keywords
Sea-connected piping system; Water-borne noise; Silencer; Transmission loss;
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