On-board vibration diagnostics of shaft damage of the aviation engine

• Autorzy: Pavolvskyi O. , Bouraou N.
• Konferencja: Symposium “Vibrations In Physical Systems” (26 ; 04-08.05.2014 ; Będlewo koło Poznania ; Polska)
• Języki publikacji: EN

Abstrakty

EN

This work is devoted to the further researches and development a new on-board multilevel vibration control system of aviation gas-turbine engines (GTE). We propose to introduce new diagnosis level (subsystem) into development multilevel vibration control system for detection of the initial crack-like damage of rotor shaft. The proposed subsystem works at the non-steady-state modes of GTE, for example during startup at the acceleration to operating speed. The basis of this approach is the fact of the occurrence of sub harmonic resonances of accelerating cracked shaft response. It is necessary to extract the main rotor harmonic vibration at the nonsteady-state mode for crack diagnosis in practice. The narrow-band digital tracking filter is carried out for this aim, the central frequency of pass band is changing according the rotor rotation frequency. The efficiency of the proposed subsystem is demonstrated by the results of computer simulation.

Słowa kluczowe

EN

gas turbine engines; cracked shaft; vibration diagnosis; digital tracking narrow-band filter

PL

silniki gazo-turbinowe; pęknięcie wału; diagnostyka drganiowa; filtr wąskopasmowy

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2014
• Tom: Vol. 26
• Strony: 229--234
• Opis fizyczny: Bibliogr. 4 poz., il. kolor., wykr.

Twórcy

autor

Pavolvskyi O.

• National Technical University of Ukraine "Kiev Polytechnic Institute", 37 Peremogy Pr., Kyiv, Ukraine

autor

Bouraou N.

• National Technical University of Ukraine "Kiev 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. 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.
• 3. A. Sergienko, Digital signal processing, Piter, Snt. Petersburg 2006.
• 4. N. Bouraou, O. Pavlovskyi, L.Iatsko, A.Ivanchenko, Development and investigation of the digital tracking filters for the vibration control system of aviation engine at the non-steady-state modes, Aerospace technique and technology, 10 (2013) 171-176.