10th International Conference on Vibrations in Rotating by Institution of Mechanical Engineers

By Institution of Mechanical Engineers

This booklet provides the papers from the tenth overseas convention on Vibrations in Rotating equipment. This convention, first held in 1976, has outlined and redefined the state of the art within the many features of vibration encountered in rotating equipment. amazing by means of a superb mixture of commercial and educational participation completed, those papers current the newest tools of theoretical, experimental and Read more...

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Additional resources for 10th International Conference on Vibrations in Rotating Machinery : 11-13 September 2012, IMechE, London

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These examples include (a) decomposition of disk-like vibrations in real time (b) engine order decomposition (c) active detection of asymmetry in rotating parts. 2 DETECTING TRAVELING WAVE DIRECTION – MULTIPLE SENSORS Consider an elastic structure vibrating and rotating simultaneously. g. g. laser [20, 28]) or moving relative to the vibrating structure. Every sensor deployment can capture a part of the temporal-spatial vibration state while a full picture can be obtained only for some cases or when multiple sensors are deployed in special patterns along the structure.

P. S. D. S. P. Committee, Programs for digital signal processing: IEEE, 1979. [32] C. W. Lee, "A complex modal testing theory for rotating machinery," Mechanical Systems and Signal Processing, vol. 5, pp. 119-137, 1991. [33] I. Bucher, "Estimating the ratio between travelling and standing vibration waves under non-stationary conditions," Journal of Sound and Vibration, vol. 270, pp. 341-359, 2004. [34] R. Potter and M. Gribler, "Computed order tracking obsoletes older methods," 1989. [35] J. P.

2  This modulated frequency term is directly proportional to asymmetry only and can thus be isolated from other response components. (15). Figure 15. 5% asymmetry. 5Hz was exerted by the magnetic bearing. Figure 16. Left: run-up of a nearly axisymmetric system. 5% asymmetry showing the amplification of the vibration at n  2   An effective fault detection procedure would use order tracking to extract the vibration amplitude at the appropriate frequency which is speed dependent and would thus combine the approaches of sections 1,2 and 3.

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