ESSENTIAL POST-PROCESSING pre-pub.pdf (1.22 MB)
Rotor vibration measurements using laser Doppler vibrometry: essential post-processing for resolution of radial and pitch/yaw vibrations
journal contribution
posted on 2008-05-20, 09:56 authored by Ben Halkon, Steve RothbergBackground: Laser Doppler vibrometry is now a well established technique enabling noncontact
vibration measurements in the most challenging of environments. Rotor vibration
measurements are often highlighted as a major application of Laser Vibrometers due to their
non-contact operation and inherent immunity to shaft run-out.
Method of Approach: In such measurements, resolution of the individual axial and torsional
vibration components is possible via particular arrangement of the laser beam(s). Resolution
of the radial or pitch / yaw vibration components, however, can only be achieved by essential
post-processing of the data from simultaneous orthogonal measurements.
Results: This paper describes the principle and rigorous examination of a novel, dedicated
resolution algorithm enabling, for the first time, real-time post-processing of the outputs from
standard commercial instruments.
Conclusions: The system performed well, even in the presence of noise and other typical
measurement errors, and was implemented successfully in an engine vibration study.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Citation
HALKON, Ben J. and ROTHBERG, S., 2006. Rotor vibration measurements using laser Doppler vibrometry: essential post-processing for resolution of radial and pitch/yaw vibrations. Journal of Vibration and Acoustics: Transactions of the ASME, 128, pp. 8-20.Publisher
© ASMEPublication date
2006Notes
This paper was published in the journal, Journal of Vibration and Acoustics: Transactions of the ASME [© 2006 by ASME]. The definitive version is available from: http://store.asme.org/Default.asp?cookie_test=1 This paper is for reference only. Anyone who wishes to use any part of this article must contact ASME for permission at permissions@asme.org.ISSN
1528-8927;1048-9002Language
- en