This paper presents the validation of an experimental technique that maps the transfer of energy in vibrating structures. The technique is known as Experimental Spatial Power Flow (ESPF) and is unique in that it provides a spatially continuous representation of the power flow based on measurements from a scanning laser Doppler vibrometer. In this paper, the ESPF technique is validated by showing that ESPF results compare to within 10 percent of the results obtained using single point impedance head measurements. A simply supported plate excited by two shakers phased to act as an energy source and sink is used as the test object.
Spatially Continuous Power Flow Using a Scanning Laser Doppler Vibrometer
Contributed by the Technical Committee on Vibration and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received Aug. 2001; Revised Dec. 2001. Associate Editor: A. F. Vakakis.
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Blotter, J. D., West, R. L., and Sommerfeldt, S. D. (September 20, 2002). "Spatially Continuous Power Flow Using a Scanning Laser Doppler Vibrometer ." ASME. J. Vib. Acoust. October 2002; 124(4): 476–482. https://doi.org/10.1115/1.1497363
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