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.
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.
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[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.
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[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.
