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http://dx.doi.org/10.7837/kosomes.2017.23.7.948

A Study on the Sound Insulation Characteristics of Honeycomb Panels for Offshore Plants  

Jung, Jae-Deok (Department of Naval Architecture and Ocean Engineering, Seoul National University)
Hong, Suk-Yoon (Department of Naval Architecture and Ocean Engineering, Seoul National University)
Song, Jee-Hun (Department of Naval Architecture and Ocean Engineering, Chonnam National University)
Kwon, Hyun-Wung (Department of Naval Architecture and Ocean Engineering, Koje College)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.23, no.7, 2017 , pp. 948-955 More about this Journal
Abstract
Currently, porous materials (e.g., mineral wool) are the core materials used in offshore plant panels, but in spite of their superb acoustic performance, these items must be replaced for environmental reasons. A honeycomb structure is widely used throughout the industry because of its high strength-to-weight ratio. However, research in terms of noise and vibration is minimal. An acoustic study should be conducted by taking advantage of honeycomb structures to replace porous materials. In this study, a simulation was performed assuming that a honeycomb panel is a superposition of symmetric mode and antisymmetric mode. Reliability was verified by comparing a simulation results based on a theory with a experimental results, and the possibility of the panel as a core material was evaluated by studying the sound insulation characteristics of a honeycomb. As the panel thickness increased, the coincidence frequency shifted to low frequency. As the angle between horizontal line and oblique wall and cell-size decreases, the sound insulation performance is improved. And as the cell-wall thickness increased, the sound insulation performance improved.
Keywords
Honeycomb; Sound transmission loss; Orthotropy; Isotropy; Scaled reverberation chamber;
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