Spatially Continuous Power Flow Using a Scanning Laser Doppler Vibrometer-Reference-Cited by-同舟云学术

Spatially Continuous Power Flow Using a Scanning Laser Doppler Vibrometer

Published:2002-09-20 Issue:4 Volume:124 Page:476-482
ISSN:1048-9002
Container-title:Journal of Vibration and Acoustics
language:en
Short-container-title:

Author:

Blotter Jonathan D.¹,West Robert L.²,Sommerfeldt Scott D.³

Affiliation:

1. Mechanical Engineering Department, Brigham Young University, Provo, UT 84602-4201

2. Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0238

3. Department of Physics and Astronomy, Brigham Young University, Provo, UT 84602

Abstract

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.

Publisher

ASME International

Subject

General Engineering

Link

http://asmedigitalcollection.asme.org/vibrationacoustics/article-pdf/124/4/476/5827474/476_1.pdf

Reference14 articles.

1. Pavic, G. , 1976, “Measurement of Structure Borne Wave Power Flow, Part 1: Formulation of the Methods,” J. Sound Vib., 49, pp. 221–230.

2. Center Technique Des Industries Mecaniques, 1990, Proceedings of the Structural Intensity and Vibration Energy Flow; 3rd International Congress on Intensity Techniques, Senlis, France.

3. Center Technique Des Industries Mecaniques, 1993, Proceedings of the Structural Intensity and Vibration Energy Flow; 4th International Congress on Intensity Techniques, Senlis, France.

4. 23rd–29th International Congresses on Noise Control Engineering (Inter-Noise), several papers and sessions in each of these conferences have been dedicated to power flow and structural intensity developments.

5. Benes, E., Exner, C., Fock, C., Groschl, M., and Pavic, G., 1995, “Multipoint Optical Measurement of Structural Intensity,” Proceedings of Inter-Noise 95, Vol. 1, pp. 665–668.

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