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http://dx.doi.org/10.7837/kosomes.2013.19.4.410

Analysis of Acoustic Target Strength for the Submarine with Alberich Anechoic Coating Effects  

Kwon, Hyun-Wung (Research Institute of Marine Systems Engineering, Seoul National University)
Hong, Suk-Yoon (Department of Naval Architecture and Ocean Engineering, Seoul National University)
Kim, Hwa-Muk (Department Combatant Ships Project Team, Naval Ship Program, Defense Acquisition Program Administration)
Song, Jee-Hun (Department of Naval Architecture and Ocean Engineering, Chonnam National University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.19, no.4, 2013 , pp. 410-415 More about this Journal
Abstract
Acoustic target strength (TS) is one of the most considerable design elements for survival capacities of the submarine. It needs to reduce acoustic TS that submarines are getting larger and larger, Alberich anechoic coatings are widely used as the representative method. In this paper, the finite element method (FEM) is used to analyze the reflection and transmission coefficients of Alberich anechoic coatings, which have periodic unit cells. The FEM results are compared with experimental results in the literature. Moreover, acoustic TS for the submarine is analyzed by using that result. Finally, it is shown that acoustic TS (Case 1: 10dB, Case 2: 6dB) are reduced due to the use of Alberich anechoic coatings.
Keywords
Acoustic target strength; Alberich anechoic coatings; Finite element method; Reflection and transmission coefficients; Kirchhoff approximation;
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Times Cited By KSCI : 2  (Citation Analysis)
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