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Trends in Applied Sciences Research

Year: 2006 | Volume: 1 | Issue: 6 | Page No.: 553-563
DOI: 10.17311/tasr.2006.553.563
A Complete Description of Intensity Fields of Thin Isotropic Plates for Flexural Waves in General Field Conditions
Nirmal K. Mandal

Abstract: In engineering practice, structural intensity gives valuable information of sources and sinks of vibration excitations as well as a detailed knowledge of energy propagation through structures. As a result, proper damping treatment can be employed to mitigate noise and vibration harness (NVH) problems. In this study, a complete description of general vibration intensity fields (Wm-1) in the frequency domain for isotropic plates is formulated considering flexural waves which is not based on some approximation such as far-field conditions. An 8-point transducer array is required to get an intensity vector in a particular direction taking into account as many as fifteen cross-spectra of field signals. A multi-channel FFT analyser is useful for this measurement. However, one transducer frequency response method is also employed to estimate these cross-spectra alternately. It gives the measurements free from phase mismatch errors.

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How to cite this article
Nirmal K. Mandal , 2006. A Complete Description of Intensity Fields of Thin Isotropic Plates for Flexural Waves in General Field Conditions. Trends in Applied Sciences Research, 1: 553-563.

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