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Proceedings Paper

Three Dimensional Analysis Of Volume Vibrations By Electronic Speckle Pattern Interferometry
Author(s): M. C. Shellabear; J. R . Tyrer
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Paper Abstract

There are many situations in vibration analysis where it is necessary or desirable to make three-dimensional measurements. By using three different illumination geometries around a single imaging system, Electronic Speckle Pattern Interferometry (ESPI) can be used to measure the orthogonal components of vibration amplitude independently. These can be combined to determine the three-dimensional mode shape. The theory is given for making quantitative measurements, and a practical system is described. Examples of experimental results are presented for volume vibrations of a thick cylinder, identification of vibration modes of a turbocharger blade, and observation of in-plane modes in a thin plate.

Paper Details

Date Published: 31 July 1989
PDF: 10 pages
Proc. SPIE 1084, Stress and Vibration: Recent Developments in Industrial Measurement and Analysis, (31 July 1989); doi: 10.1117/12.952923
Show Author Affiliations
M. C. Shellabear, Loughborough University of Technology (United Kingdom)
J. R . Tyrer, Loughborough University of Technology (United Kingdom)


Published in SPIE Proceedings Vol. 1084:
Stress and Vibration: Recent Developments in Industrial Measurement and Analysis

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