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A Study on Transmission Loss Characteristics of Honeycomb Panel for Offshore Structures

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http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53670#.VM8r8izQrzE

Author(s)   
Jae-Deok Jung1, Suk-Yoon Hong1, Jee-Hun Song2, Hyun-Woung Kwon3

Affiliation(s)
1Department of Naval Architecture and Ocean Engineering, Seoul National University, Seoul, Republic of Korea.
2Department of Naval Architecture and Ocean Engineering, Chonnam National University, Yeosu, Republic of Korea.
3Department of Naval Architecture and Ocean Engineering, Koje College, Koje, Republic of Korea.

ABSTRACT
Honeycomb panel is consisted of 3 layers that are double-faced sheets and honeycomb-shaped core. It is highly desirable for ship, railway, and aerospace industry. The reason is that honeycomb panel excels in strength and in its weight. However in terms of insulation, it is a little bit insufficient to commonly use sandwich-panel. In this paper, Moor’s theory is used to predict sound transmission loss (STL). The theory is assumed that core layer is homogeneous orthotropic. And to calculate STL, it is evaluated in terms of the symmetric and anti-symmetric panel impedances, and the characteristic impedance of air. After that predicted data are compared with experiment data.

KEYWORDS
Honeycomb Panel, Sound Transmission Loss (STL), Orthotropic Core

Cite this paper
Jung, J. , Hong, S. , Song, J. and Kwon, H. (2015) A Study on Transmission Loss Characteristics of Honeycomb Panel for Offshore Structures. Journal of Applied Mathematics and Physics, 3, 172-176. doi: 10.4236/jamp.2015.32027.

References
[1]Wang, S.C., Deng, Z.X. and Shen, W.D. (2010) Sound Transmission Loss Characteristics of Unbounded Orthotropic Sandwich Panels in Bending Vibration Considering Transverse Shear Deformation. Composite Structures, 92, 2885- 2889. http://dx.doi.org/10.1016/j.compstruct.2010.04.014
 
[2]Moore, J.A. and Lyon, R.H. (1991) Sound Transmission Loss Characteristics of Sandwich Panel Constructions. J Acoust Soc Am, 89, 777-791. Smith, J., Jones Jr, M., Houghton, L., et al. (1999) Future of Health Insurance. N Engl J Med, 965, 325-329.
 
[3]Brouard, B., Lafarge, D. and Allard, J.-F. (1995) A General Method of Modelling Sound Propagation in Layered Media. Journal of Sound and Vibration, 183, 129-142. Renji, K. and Nair, P.S. (1996) Modal Density of Composite Honeycomb Sandwich Panels. J Sound Vib., 195, 687- 699.
 
[4]Biot, M.A. (1956) The Theory of Propagation of Elastic Waves in a Fluid Saturated Porous Solid. The Journal of the Acoustical Society of America, 28, 168-191. http://dx.doi.org/10.1121/1.1908239
 
[5]Lin, H.-J., Wang, C.-N. and Kuo, Y.-M. (2007) Sound Transmission Loss across Specially Orthotropic Laminates. Applied Acoustics, 68, 1177-1191. http://dx.doi.org/10.1016/j.apacoust.2006.06.007
 
[6]Paik, J.K., Thayamballi, A.K. and Kim, G.S. (1999) The Strength Characteristics of Aluminum Honeycomb Sandwich Panels. Thin-Walled Structures, 35, 205-231. http://dx.doi.org/10.1016/S0263-8231(99)00026-9
 
[7]Kim, H.-G. and Choi, N.-S. (2004) Prediction of Mechanical Properties of Honeycomb Core Materials and Analysis of Interlaminar Stress of Honeycomb Sandwich Composite Plate. Composites Research, 17, 29-37.
 
[8]Moore, J. (1975) Sound Transmission Loss Characteristics of Three Layer Composite Wall Constructions. Massachusetts Institute of Technology.                                                                               eww150202lx
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