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Journal of Vibration and Control
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Structure-Borne Power Transmission in Thin Naturally Orthotropic Plates: General Case

Nirmal Kumar Mandal

59/35 Northfields Avenue, Wollongong, NSW 2500, Australia

Roslan Abd. Rahman

Institute of Noise and Vibration, University of Technology Malaysia, Jalan Semarak, 54100 Kuala Lampur; Malaysia

M. Salman Leong

Institute of Noise and Vibration, University of Technology Malaysia, Jalan Semarak, 54100 Kuala Lampur; Malaysia

The structural intensity technique is usually used to estimate vibration power flow in structures. This method is used to determine vibration power flow in thin naturally orthotropic plates. The bending wave is considered to find general vibration power transmission in the frequency domain that is not approximated by far field conditions. This intensity formulation defines power flow per unit width of the plates (W m–1) similar to that of the conventional idea. Power flow estimation is formulated using cross-spectra of field signals, facilitating the use of a fast Fourier transform analyzer.

Key Words: Structural intensity • bending wave power • orthotropy • general field conditions • cross-spectral densities

Journal of Vibration and Control, Vol. 9, No. 10, 1189-1199 (2003)
DOI: 10.1177/107754603030693
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