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Proceedings Paper

Radial vibration measurements on rotors using laser vibrometry: a first practical solution to the cross-sensitivity problem
Author(s): John Bell; Steve J. Rothberg
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Paper Abstract

Rotor vibration measurement is a key part of both the development and condition monitoring of rotating machinery. Measurement of the vibration transmitted from the rotor into a non-rotating component is the most common arrangement but in many situations the ideal rotor vibration measurement would be one taken directly from the rotating component. The non-contact nature of laser vibrometers are sensitive to motion perpendicular to the intended measurement and speed fluctuations. This paper presents a technique that enables accurate steady-state, non-synchronous vibration measurements to be made. Measurements on a test rotor have been compared with bearing mounted accelerometer measurements to validate the technique and sensitivity to inaccuracy in the measurement of rotation speed has been quantified.

Paper Details

Date Published: 1 June 1998
PDF: 9 pages
Proc. SPIE 3411, Third International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (1 June 1998); doi: 10.1117/12.307692
Show Author Affiliations
John Bell, Loughborough Univ. (United Kingdom)
Steve J. Rothberg, Loughborough Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 3411:
Third International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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