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http://dx.doi.org/10.7776/ASK.2011.30.1.017

An Experiment on Reduction of Infrasonic Underwater Self-Noise  

Lee, Seong-Wook (한국해양연구원 해양위성.관측기술연구부)
Lee, Yong-Kuk (한국해양연구원 해양위성.관측기술연구부)
Kim, Seong-Ryul (한국해양연구원 남해연구소)
Publication Information
The Journal of the Acoustical Society of Korea / v.30, no.1, 2011 , pp. 17-21 More about this Journal
Abstract
The effects of screening hydrophones with open-cell foams for reduction of the infrasonic self-noise induced by the flow around hydrophones are investigated by at-sea experiment. Test results of the 10 ppi polyurethane open-cell foams with different thickness show that the foams of 1 cm and 3 cm thickness reduce the flow-induced self-noises up to 20 dB and 28 dB at the frequency band of 2-10 Hz, respectively.
Keywords
Underwater Flow; Self-Noise Reduction; Infrasonic Band; Open-Cell Foam;
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