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Detection and simulation of small trasverse cracks in rotating shafts

Zur Erkennung und Simulation kleiner, ebener Querrisse in rotoren

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Summary

The detection of small transverse cracks in rotating shafts is difficult. An advanced vibration monitoring method is proved in laboratory tests. It bases on an angle dependent sampling of the vibrational data and the comparison with a reference signal of the undamaged rotor. A finite crack element is developed from a spatial finite element analysis and is used for numerical simulations of the dynamic behaviour of cracked rotors. The results of the numerical simulations are compared with experimental data.

Übersicht

Die Erkennung kleiner, ebener Querrisse in Rotoren ist schwierig. Ein erweitertes Verfahren zur Schwingungs-überwachung wird in Laborsuchen erprobt. Es basiert auf einer winkelgebergesteuerten Aufnahme der Rotorschwingungs-signale und der Differenzbildung mit einem Referenzsignal des ungerissenen Rotors. Ein finites Rißelement wird aus räumlichen Finite-Elemente-Berechnungen entwickelt und zur numerischen Simulation des dynamischen Verhaltens angerissener Rotoren verwandt. Die Simulationsergebnisse werden mit den Meßergebnissen verglichen.

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References

  1. Allianz Berichte: Schwingungsüberwachung von Turbosätzen — ein Weg zur Erkennung von Wellenanrissen. Berlin, München: Allianz-Berichte für Betriebstechnik und Schadensverhütung Nr. 24, 1987

  2. Andersson, I.; Ericson, U.; Noremark, A.: Experience from on-line computerized vibrtion monitoring in scandinavian nuclear power plants during 1980–1986. In: Proc. of the 3rd EPRI Incipient-Failure Detection Conference, Philadelphia, Pennsylvania, Mar. 10–12, 1987, pp. 2-87–2-116, Report CS-5395, 1988

  3. Chaudhary, A.B. Bathe, K.-J.: A solution method for static and dynamic analysis of three-dimensional contact problems with friction. Comp. Struct., 24 (1986) 855–873

    Google Scholar 

  4. Dirr, B.O.; Schmalhorst, B.K.: Crack depth analysis of a rotating shaft by vibration measurement. Trans. ASME Journal of Vibration, Stress and Reliability in Design 110 (1988) 158–164

    Google Scholar 

  5. Höxtermann, E.: Erfahrungen mit Schäden in Form von Anrissen und Brüchen an Dampfturbinenwellen, Radscheiben und Generatorläufern. VGB Technische Vereinigung der Großkraftwerksbetreiber E.V., VGB Technisch-wissenschaftliche Berichte Wärmekraftwerke-VGB-TW 107-, 1988

  6. Imam, I: Method for on-line detection of incipient cracks in turbine-generator rotors. United States Patent No. 4,408,294, 1983

  7. Imam, I.; Scheibel, J.; Azzaro, S.H.; Bankert, R.J.: Development of an on-line rotor crack detection and monitoring system. In: ASME (ed.) Proc. of the 11th Biennial Conference on Mechanical Vibation and Noise, Boston, 1987-Rotating Machinery Dynamics DE-Vol. 2, pp. 615–628, 1987

  8. Jenkins, L.S.: Cracked shaft detection on large vertical nuclear reactor coolant pump. In: Instability in Rotating Machinery — NASA Conf. Publication 2409, pp. 253–266, 1985

  9. Kottke, J.J.: Menning, R.H.: Detection of a transverse crack in a turbine shaft — ‘The Oak Creek Experience’. ASME Paper 81-JPGC-Pwr-19, 1981

  10. Nilsson, L.R.K.: On the vibration behaviour of a cracked rotor. In: IFToMM (ed.) Proc. Int. Conf. on Rotordynamic Problems in Power Plants, Rome, 1982, pp. 507–514

  11. Rothkegel, W.: Detection of small cracks in rotating shafts by vibration monitoring. Machine Vibration1 (1992) 80–85

    Google Scholar 

  12. Rothkegel, W.: Rißerkennung bei Rotoren durch Schwingungsüberwachung. Hannover, Universität, Fakultät für Maschinenwesen, Diss. 1992. — Fortschr.-Ber. VDI Reihe 11, Nr. 180. Düsseldorf: VDI-Verlag 1993

    Google Scholar 

  13. Schmalhorst, B.: Experimentelle und theoretische Untersuchungen zum Schwingungsverhalten angerissener Rotoren. Hannover, Universität, Fakultät für Maschinenwesen, Diss. 1989. — Fortschr.-Ber. VDI Reihe 11, Nr. 117. Düsseldorf: VDI-Verlag 1989

    Google Scholar 

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Authors and Affiliations

  1. Institut für Mechanik, Universität Hannover, Appelstr. 11, D-30167, Hannover, Germany

    B. O. Dirr,  K. Popp &  W. Rothkegel

Authors
  1. B. O. Dirr
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  2. K. Popp
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  3. W. Rothkegel
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Dirr, B.O., Popp, K. & Rothkegel, W. Detection and simulation of small trasverse cracks in rotating shafts. Arch. Appl. Mech. 64, 206–222 (1994). https://doi.org/10.1007/BF00806818

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  • DOI: https://doi.org/10.1007/BF00806818

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