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Characterizing the Sound Insulation of a Specially Orthotropic Multi-Layered Medium

Published online by Cambridge University Press:  05 May 2011

H.-J. Lin ,
C.-N. Wang  and
Y.-M. Kuo
H.-J. Lin*
Affiliation:
Dept. of Electrical Engineering, National Panghu University, Penghu Hsien, Taiwan 88046, R.O.C.
C.-N. Wang*
Affiliation:
Dept. of Engineering Science and Ocean Engineering, National Taiwan University, Taipei, Taiwan 10617, R.O.C.
Y.-M. Kuo*
Affiliation:
Dept. of Engineering Science and Ocean Engineering, National Taiwan University, Taipei, Taiwan 10617, R.O.C.
*
*Professor
*Professor
**Ph.D. candidate
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Abstract

This work explores the sound transmission loss provided by the orthotropic multi-layers to elucidate the sound insulation of FRP (Fiber Reinforced Plastics). Mat is the major material considered in the numerical works. The transfer matrices of a single layer of the orthotropic laminate and the fluid are determined. Further, the boundary conditions on the various interface planes are arranged into matrix form. Combining the transfer matrixes and the boundary conditions and applying the transfer matrix method (TMM) yields the surface impedance and the sound transmission loss. The sound-propagation characteristics are studied. Additionally, the STC (Sound Transmission Class) of FRP and steel are compared and discussed.

Keywords

FRPCompositeAcousticTransfer MatrixTransmission Loss.
Type
Articles
Information
Journal of Mechanics , Volume 23 , Issue 1 , March 2007 , pp. 63 - 68
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2007

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References

1.Kurtze, G. and Wateerd, B. G., “New Wall Design for High Transmission Loss or High Damping,” J. Acous. Soc. Am., 31, pp. 739–748 (1959).Google Scholar
2.Dym, C. L. and Lang, M. A., “Transmission of Sound Through Sandwich Panels,” J. Acoust. Soc. Am., 56(5), pp. 1523–1532(1974).Google Scholar
3.Dym, C. L., Ventress, C. and Lang, M. A., “Transmission of Sound Through Sandwich Panels: A Reconsideration,” J. Acoust. Soc. Am., 59(2), pp. 364–367 (1976).Google Scholar
4.Dym, C. L. and Lang, M. A., “Transmission Loss of Damped Asymmetric Sandwich Panels with Orthotropic Cores,” J. Sound Vib., 88(3), pp. 299–319 (1983).Google Scholar
5.Wang, T., Sokolinsky, V. S., Rajaram, S. and Nutt, S. R., “Assessment of Sandwich Models for the Prediction of Sound Transmission Loss in Unidirectional Sandwich Panels,” Applied Acoustics, 66(3), pp. 245–262 (2005).CrossRefGoogle Scholar
6.Koval, L. R., “On Sound Transmission into an Orthotropic Shell,” J. Sound Vib., 63(1), pp. 51–59 (1979).CrossRefGoogle Scholar
7.Chonan, S. and Koriyama, H., “Sound Insulation Characteristics of Finite Length Orthotropic Shells,” J. Sound. Vib., 126(3), pp. 525–532(1988).CrossRefGoogle Scholar
8.Blaise, A., Lesueur, C., Gotteland, M. and Barbe, M., “On Sound Transmission into an Orthotropic Infinite Shell, Comparison with Koval's Results and Understanding of Phenomena,” J. Sound Vib., 150(2), pp. 233–243 (1991).CrossRefGoogle Scholar
9.Maxime, B., Raymond, P., Noureddine, A, and Jean-Luc, W., “Numerical and Experimental Characterization of the Transmission Loss of Complex Composite Panels,” J. Acous. Soc. Am., 108(5), p. 2625 (2000).Google Scholar
10.Brekhovskikh, L. M., Waves in Layered Media, Academic Press, New York (1960).Google Scholar
11.Ghinet, S. and Atalla, N., “Sound Transmission Loss of Insulating Complex Structures,” Canadian Acoustics — Acoustique Canadienne, 29(3), pp. 26–27 (2001).Google Scholar
12.Lin, H. J., Wang, C. N. and Kuo, Y. M., “Sound Transmission Loss Across Orthotropic Composite Laminate,” Submitting to Applied Acoustic (in revising) (2005).Google Scholar
13.Wu, C. Y., Chang, J. S. and Wu, K. C., “Analysis of Wave Propagation in Infinite Piezoelectric Plates,” Journal of Mechanics, 21, pp. 103–108 (2005).CrossRefGoogle Scholar
14.Lauriks, W, Allard, J. F., Depollier, C. and Cops, A., “Inhomogeneous Plane Waves in Layered Materials Including Fluid, Solid and Porous Layers,” Wave Motion, 13(4), pp. 329–336 (1991).CrossRefGoogle Scholar
15.Salmon, V., “STC Calculation,” S V Sound Vib., 15(10), pp. 22–24(1981).Google Scholar
16.Mignery, L. A., Designing Automotive Dash Panels with Laminated Metal, International Body Engineering Conference SAE, SAE Paper No. 1999-01-3201 (1999).CrossRefGoogle Scholar