Nonlinear Simulation of Defected Rotor-Bearing Systems: Methods for Detection of Rotor Crack and Bearing Wear - Couverture souple

Chasalevris, Athanasios

 
9783844385977: Nonlinear Simulation of Defected Rotor-Bearing Systems: Methods for Detection of Rotor Crack and Bearing Wear
Couverture souple
ISBN 10 : 3844385975 ISBN 13 : 9783844385977
Editeur : LAP LAMBERT Academic Publishing, 2011

Synopsis

The current work focuses into two main directions ofrotor dynamics object: the simulation ofa rotor-bearing system and the detection of defectsthat are commonly appeared in rotating systems. Thetransverse breathing crack in a rotor and the radialyextended wear in a bearing are the defects presentedin the simulations. The persuasion is initialy tomake a proposal in rotor-bearing system nonlinearsimulation and secondly to suggest methods able todetect the transverse breathing rotor crack and thebearing wear. Time-frequency analysis is performedusing continuous wavelet transform in numerical andexperimental time histories in order to extract thevariable coupling phenomenon exclusively due to thebreathing crack from the other two main reasons ofcoupling, the bearings and the shaft. The mainspeculations are that both defects have to bedetected in an early growth and without the demand ofinterrupting the operation of the system since thiscannot be always feasible in real rotating machinery.The growths of the defects have to be at least of 10%of rotor radius for the crack, and 20% of bearingradial clearance for bearing wear.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

The current work focuses into two main directions ofrotor dynamics object: the simulation ofa rotor-bearing system and the detection of defectsthat are commonly appeared in rotating systems. Thetransverse breathing crack in a rotor and the radialyextended wear in a bearing are the defects presentedin the simulations. The persuasion is initialy tomake a proposal in rotor-bearing system nonlinearsimulation and secondly to suggest methods able todetect the transverse breathing rotor crack and thebearing wear. Time-frequency analysis is performedusing continuous wavelet transform in numerical andexperimental time histories in order to extract thevariable coupling phenomenon exclusively due to thebreathing crack from the other two main reasons ofcoupling, the bearings and the shaft. The mainspeculations are that both defects have to bedetected in an early growth and without the demand ofinterrupting the operation of the system since thiscannot be always feasible in real rotating machinery.The growths of the defects have to be at least of 10%of rotor radius for the crack, and 20% of bearingradial clearance for bearing wear.

Biographie de l'auteur

Dr. Athanasios Chasalevris studied Mechanical and AeronauticalEngineering in the University of Patras in Hellas. In the sameInstitut he achieved his Doktoral Thesis in Vibrationanalysis of Nonlinear-Dynamic Rotor-Bearing Systems.Since 2010, he is a scholar of Alexander von Humboldt Foundation in TU Darmstadt in the object of Rotordynamics.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2011
Langue
anglais
ISBN 10 
3844385975
ISBN 13 
9783844385977
Reliure
Broché
Nombre de pages
300
Coordonnées du fabricant
non disponible
Personne responsable
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