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Identyfikatory
Warianty tytułu
Konferencja
Symposium Vibrations In Physical Systems (27 ; 09-13.05.2016 ; Będlewo koło Poznania ; Polska)
Języki publikacji
Abstrakty
This work is devoted to further research and improvement of the vibration diagnostics of the initial crack-like damage of rotation shaft in aviation gas-turbine engines (GTE). We propose to use fractal analysis of the accelerating shaft response in order to increase the damage detection efficiency. Responses of the accelerating shaft are derived by using simulation in absence and in presence of the initial traverse crack. The responses of the cracked shaft have sub-critical peaks; the increase in size of a crack leads to the increase in peak values of the vibration amplitude in the range of sub-harmonic resonances. The Hurst exponent is obtained for the time series in the range of sub-harmonic resonances. The research shows that a small change in the crack size results in considerable change of the Hurst exponent, which allows to detect the mentioned sub-harmonic resonances of the measured signal in order to identify the initial crack-like damage of the rotation shaft.
Czasopismo
Rocznik
Tom
Strony
61--66
Opis fizyczny
Bibliogr. 5 poz., wykr.
Twórcy
autor
- National Technical University of Ukraine Kyiv Polytechnic Institute, 37 Peremogy Pr., Kyiv, Ukraine
autor
- National Technical University of Ukraine Kyiv Polytechnic Institute, 37 Peremogy Pr., Kyiv, Ukraine
autor
- National Technical University of Ukraine Kyiv Polytechnic Institute, 37 Peremogy Pr., Kyiv, Ukraine
Bibliografia
- 1. O. Pavlovskyi, N. Bouraou, L. Iatsko, Multilevel vibration control system of aviation gas-turbine engines, Vibrations in Physical Systems, 25 (2012) 323 – 328.
- 2. O. Pavlovskyi, N. Bouraou, On-board vibration diagnostics of shaft damage of the aviation engine, Vibrations in Physical Systems, 26 (2014) 229 – 234.
- 3. J. Feder, Fractals, Plenum Press, New York, 1988.
- 4. M. A. Sanchez Granero, J. E. Trinidad Segovia, J. Garcia Perez, Some comments on Hurst exponent and the long memory processes on capital markets, Physica A, 387 (2008) 5543 – 5551.
- 5. J. Sawicki, X. Wu, G. Baaklini, A. Gyekenyesi, Vibration-based crack diagnosis in rotating shafts during acceleration through resonance, Proc. of SPIE, 5046 (2003) 1 – 10.
Uwagi
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-0eb08898-1805-49a9-8e86-443291dc3cfd