Abstract
Cracks can develop in rotating shafts and can propagate to relevant depths without affecting consistently the normal operating conditions of the shaft. In order to avoid catastrophic failures, accurate vibration analyses have to be performed for crack detection. Identification of crack location and depth is possible by means of model based diagnostic approach, provided that the model of the crack and the model of the cracked shaft dynamical behavior are accurate and reliable. Typical dynamical behavior of cracked shafts is shown and tests for detecting cracks are presented. The modeling of cracks is described in the paper, the simulation of the dynamical behavior of cracked shaft is shown and numerical results are compared to experimental results. All effects of cracks on the vibrations of rotating shafts are analyzed and some results of a numerical sensitivity analysis of the vibrations to the presence and severity of the crack are shown. Finally the model based identification procedure is described and some results in crack identification in position and depth are shown.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Dimarogonas, A.D.: Vibration of cracked structures: a state of the art review. Eng. Fract. Mech. 55, 831–857 (1996)
Bachschmid, N., Pennacchi, P.: Special issue: crack effects in rotordynamics. Mech. Syst. Signal Process. 22, 761–762 (2008)
Bachschmid, N., Pennacchi, P., Tanzi, E.: Cracked rotors: a survey on static and dynamic behaviour including modelling and diagnosis. Springer (2010)
Nilsson, L.R.K.: On the vibration behaviour of a cracked rotor. IFToMM International Conference on Rotordynamic Problems in Power Plants, pp. 515–524. Rome, Italy, (1982)
Sanderson, A.F.P.: The vibration behaviour of a large steam turbine generator during crack propagation through the generator rotor. IMechE International Conference on Vibrations in Rotating Machinery, pp. 263–273. Bath, UK, paper C432/102 (1992)
Passleva, G., Pira, G.: Cracked shaft vibration sensitivity to steam temperature variations. IFToMM International Conference on Rotordynamic Problems in Power Plants, Rome, Italy (1982)
Lapini, G.L., Zippo, M., Bachschmid, N., Collina, A., Vallini, A.: Experimental tests and model based calculations for the diagnosis of a crack in a 320 MW generator. CISM/IFToMM Symposium Proc., pp. 87–97. Udine, Italy (1993)
Bachschmid, N., Pennacchi, P., Tanzi, E.: Rotating shafts affected by transverse cracks: experimental behaviour and modelling techniques. Int. J. Mater. Struct. Integrity 1, 71–116 (2007)
Sawicki, J.T., Gyekenyesi, A.L., Baaklini, G.Y.: Modal-based diagnostics of cracked rotors. Proceedings of SPIE, Int. Soc. Opt. Eng. 4704, 133–138 (2002)
Pennacchi, P., Bachschmid, N., Vania, A.: A model based identification method of transverse cracks in rotating shafts suitable for industrial machines. Mech. Syst. Signal Process. 20, 2112–2147 (2006)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2011 Springer Science+Business Media B.V.
About this paper
Cite this paper
Bachschmid, N., Pennacchi, P., Tanzi, E. (2011). Cracked Rotating Shafts: Typical Behaviors, Modeling and Diagnosis. In: Gupta, K. (eds) IUTAM Symposium on Emerging Trends in Rotor Dynamics. IUTAM Bookseries, vol 1011. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0020-8_37
Download citation
DOI: https://doi.org/10.1007/978-94-007-0020-8_37
Published:
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-007-0019-2
Online ISBN: 978-94-007-0020-8
eBook Packages: EngineeringEngineering (R0)