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Proceedings Paper

Laser-based measurement system for measuring the vibration on rotating discs
Author(s): I. Bucher; P. Schmiechen; David A. Robb; David J. Ewins
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Paper Abstract

This paper describes a laser-based system for measuring vibration on rotating discs. The setup allows the user to track an arbitrary periodic path at any multiple of the disc's rotational speed. In particular, the laser can be rotationally-locked to the disc and thus track a circle in space allowing continuous measurement of the response at a defined point on the disc for both constant and varying rotation speed. An electro-magnetic non-contacting shaker provides the forcing excitation to the rotating disc. Due to rotation, the vibration spectrum of the rotating disc becomes very complex. In particular, the disc vibrates at several frequencies other than the applied excitation frequency. A stepped sine method has been developed to measure and for parameter identification of the rotating disc vibration properties.

Paper Details

Date Published: 8 September 1994
PDF: 11 pages
Proc. SPIE 2358, First International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (8 September 1994); doi: 10.1117/12.185355
Show Author Affiliations
I. Bucher, Imperial College (United Kingdom)
P. Schmiechen, Imperial College (United Kingdom)
David A. Robb, Imperial College (United Kingdom)
David J. Ewins, Imperial College (United Kingdom)


Published in SPIE Proceedings Vol. 2358:
First International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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