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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/3320

Title: Vibration measurements using continuous scanning laser vibrometry: velocity sensitivity model experimental validation
Authors: Halkon, Ben J.
Frizzel, S.R.
Rothberg, Steve
Keywords: Laser Doppler Vibrometry
Scanning
Tracking
Velocity sensitivity
Vibration measurement
Rotating machinery
Issue Date: 2003
Publisher: © Institute of Physics Publishing
Citation: HALKON, B.J., FRIZZEL, S.R. and ROTHBERG, S.J., 2003. Vibration measurements using continuous scanning laser vibrometry: velocity sensitivity model experimental validation. Measurement Science and Technology, 14, pp. 1-11.
Abstract: This paper builds on a previous study in which the theoretical description of the velocity sensed by a single laser beam incident in an arbitrary direction on a rotating target undergoing arbitrary vibration was extended to continuous scanning Laser Vibrometer measurements on targets with flexible cross-sections. The velocity sensitivity model was written in terms of either laser beam orientation angles or deflection mirror scan angles, with the latter found to be most useful for continuous scanning applications. The model enables the prediction of the Laser Vibrometer output for any measurement configuration on any target. The experimental validation presented in this paper confirms that additional components appear in rotating target measurements that are associated with both the scanning system configuration and any misalignment between the scanning system and target rotation axes. This paper will show how use of the velocity sensitivity model enables the vibration engineer to make LDV measurements with confidence.
Description: This article was published in the journal, Measurement Science and Technology [© Institute of Physics Publishing]. The definitive version is available at: http://www.iop.org/EJ/journal/MST
URI: https://dspace.lboro.ac.uk/2134/3320
ISSN: 0957-0233
Appears in Collections:Published Articles (Mechanical and Manufacturing Engineering)

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