- Tytuł:
- On-board vibration diagnostics of shaft damage of the aviation engine
- Autorzy:
-
Pavolvskyi, O.
Bouraou, N. - Powiązania:
- https://bibliotekanauki.pl/articles/128301.pdf
- Data publikacji:
- 2014
- Wydawca:
- Politechnika Poznańska. Instytut Mechaniki Stosowanej
- Tematy:
-
gas turbine engines
cracked shaft
vibration diagnosis
digital tracking narrow-band filter
silniki gazo-turbinowe
pęknięcie wału
diagnostyka drganiowa
filtr wąskopasmowy - Opis:
- 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.
- Źródło:
-
Vibrations in Physical Systems; 2014, 26; 229-234
0860-6897 - Pojawia się w:
- Vibrations in Physical Systems
- Dostawca treści:
- Biblioteka Nauki
Artykuł