Engineering Mechanics

International Conference

Proceedings Vol. 7 (2001)



May 14 – 17, 2001, Svratka, Czech Republic
Editors: Alena Poživilová and Jan Masák

Copyright © 2001 Institute of Thermomechanics, Academy of Sciences of the Czech Republic, Prague

ISBN 80-885918-64-1 (printed)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

Crack detection in rotating machine
Musil M.
pages 180 - +8p, full text

The possibility of localising and quantifYing a crack in a rotating machine based on measured vibration amplitudes of the first and second harmonic in some locations of the structure and utilising the mathematical model of an undamaged system, will be the focus of this paper. The structure is modelled by means of the FE method. The effect of the crack is modelled by the non-linear (fractional) stiffness of the element with the crack. The excitation of the system is characterized by the simultaneous effect of static and dynamic harmonic load. The methodics was documented on an elementary example, in which simulated measured data were determined by the use of the numerical solution of the non-linear analytical model of a structure with a crack.

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Text and facts may be copied and used freely, but credit should be given to these Proceedings.

All papers were reviewed by members of the scientific committee.

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