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Vibration measurements on rotating machinery using laser doppler velocimetry

journal contribution
posted on 21.09.2011, 12:30 by Steve Rothberg, Neil A. Halliwell
This paper explores the use of laser vibrometry for vibration measurement directly from a rotating component. The presence of a surface velocity component due to the rotation itself is shown to create a strong measurement dependency on vibration perpendicular to the intended measurement direction. Particular ambiguity results at synchronous frequencies. A mathematical means to resolve the genuine vibration components from two simultaneous laser vibrometer measurements is presented and shown to be effective in the study of nonsynchronous rotor vibrations.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Citation

ROTHBERG, S. and HALLIWELL, N.A., 1994. Vibration measurements on rotating machinery using laser doppler velocimetry. American Society of Mechanical Engineers (ASME) Journal of Vibration and Acoustics, 116 (3) pp. 326-331.

Publisher

© The American Society of Mechanical Engineers

Version

NA (Not Applicable or Unknown)

Publication date

1994

Notes

This article was published in the journal, Journal of Vibration and Acoustics [© The American Society of Mechanical Engineers] and the definitive version is available at: http://dx.doi.org/10.1115/1.2930432

ISSN

1048-9002

Language

en

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Keywords

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