Shock and Vibration

Shock and Vibration / 1996 / Article

Open Access

Volume 3 |Article ID 949156 | https://doi.org/10.3233/SAV-1996-3502

Jonathan D. Blotter, Robert L. West, "Experimental and Analytical Power Flow in Beams Using a Scanning Laser Doppler Vibrometer", Shock and Vibration, vol. 3, Article ID 949156, 12 pages, 1996. https://doi.org/10.3233/SAV-1996-3502

Experimental and Analytical Power Flow in Beams Using a Scanning Laser Doppler Vibrometer

Received23 Nov 1994
Accepted21 Dec 1995

Abstract

An experimental spatial power-flow (ESPF) method is presented. This method provides a spatially continuous model of the power-flow vector field derived from experimental measurements. The power-flow vector field clearly indicates locations of energy sources and sinks as well as paths of energy transmission. In the ESPF approach, a scanning laser Doppler vibrometer acquires spatially dense measurements of the vibrating test structure. These measurements are used in solving for a spatially continuous 3-dimensional complex-valued model of the steady-state dynamic response. From this experimentally derived dynamics model, a spatial representation of the power flow is computed.

Copyright © 1996 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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