The assessment of the technical condition of SO-3 engine turbine blades using an impulse test

• Autorzy: Milewicz Julia , Mokrzan Daniel , Szymański Grzegorz M.

Identyfikatory

DOI

10.19206/CE-133872

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

jet engine; turbine; modal analysis; resonance

PL

silnik odrzutowy; turbina; analiza modalna; rezonans

• Wydawca: Polskie Towarzystwo Naukowe Silników Spalinowych
• Czasopismo: Combustion Engines
• Rocznik: 2021
• Tom: R. 60, nr 1
• Strony: 24--29
• Opis fizyczny: Bibliogr. 13 poz., fot. kolor., rys., wykr.

Twórcy

autor

Milewicz Julia

• Faculty of Civil and Transport Engineering, Poznan University of Technology

• https://orcid.org/0000-0002-7360-0790

autor

Mokrzan Daniel

• Faculty of Civil and Transport Engineering, Poznan University of Technology

• https://orcid.org/0000-0001-8274-7009

autor

Szymański Grzegorz M.

• Faculty of Civil and Transport Engineering, Poznan University of Technology

• https://orcid.org/0000-0002-2784-9149

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).