- Tytuł:
- The assessment of the technical condition of SO-3 engine turbine blades using an impulse test
- Autorzy:
-
Milewicz, Julia
Mokrzan, Daniel
Szymański, Grzegorz M. - Powiązania:
- https://bibliotekanauki.pl/articles/2097507.pdf
- Data publikacji:
- 2021
- Wydawca:
- Polskie Towarzystwo Naukowe Silników Spalinowych
- Tematy:
-
jet engine
turbine
modal analysis
resonance
silnik odrzutowy
turbina
analiza modalna
rezonans - Opis:
- The paper presents the effects of the application of an experimental impulse test as a method of diagnosis of the technical condition of an SO-3 engine turbine blade fitted in a TS-11 Iskra aircraft. The aim of the test was to investigate the frequency characteristics of the blades and discuss differences between the frequency spectrum of the investigated component before and after its damage. The acoustic response measurements were performed to the signal generated by an impact hammer on the fully functional and intentionally damaged blades. The recorded signals were converted from the domain of time to the domain of frequency using the Fast Fourier Transform (FFT). The results of the FFT were the Frequency Response Functions (FRF) of the sound of the blades, based on which the statistical analysis of the resonance frequencies was carried out. The influence of the mechanical damage of the blade on the shape and characteristics of the frequency spectrum was confirmed, which substantiated the effectiveness of the impulse test in the diagnostic assessment of jet engine components.
- Źródło:
-
Combustion Engines; 2021, 60, 1; 24--29
2300-9896
2658-1442 - Pojawia się w:
- Combustion Engines
- Dostawca treści:
- Biblioteka Nauki
Artykuł