Vibroacoustical diagnosis of the crack-like damages of aircraft engine blades at the steady-state and non-steady-state modes

• Autorzy: Bouraou N. , Sopilka I.
• Konferencja: Symposium “Vibrations In Physical Systems” (24 ; 11-15.05.2010 ; Będlewo koło Poznania ; Polska)
• Języki publikacji: EN

Abstrakty

EN

The work is devoted to condition monitoring and vibroacoustical diagnosis of the crack-like damages of the gas-turbine engines (GTE) blades at the steady-state and non-steady-state modes of GTE. The developed diagnostic model of GTE is presented and the influence of damage on the measured vibro- and acoustical signals at the steady-state and non-steady-state modes of GTE is determined. The application of the following signal processing methods: Polyspectral (Higher-Order Spectral) analysis, Wavelet-transformation and dimensionless characteristics of the vibroacoustical signals is proved. The efficiency of signal processing methods is demonstrated by the results of numerical simulations of the turbine stage at the steady-state and non-steady-state modes of vibration excitation. The fault features are detected and investigated.

Słowa kluczowe

EN

gas turbine engine; crack-like damage; vibroacoustical diagnosis; signal processing

PL

silnik turbinowy; pęknięcia; uszkodzenia; diagnoza wibroakustyczna; przetwarzanie sygnałów

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2010
• Tom: Vol. 24
• Strony: 69--74
• Opis fizyczny: Bibliogr. 4 poz.

Twórcy

autor

Bouraou N.

• National Technical University of Ukraine "Kiev Polytechnic Institute" 37 Peremogy Pr., Kyiv, Ukraine, 03056

autor

Sopilka I.

• National Technical University of Ukraine "Kiev Polytechnic Institute" 37 Peremogy Pr., Kyiv, Ukraine, 03056

Bibliografia

• 1. N. Bouraou, P. Marchuk, A. Tyapchenko Condition Monitoring Diagnosis Method of Aircraft Engine Rotating Details, In Proceedings of the 15th World Conference on Non-Destructive Testing (2000).
• 2. C. Cempel Diagnostically Oriented Measures of Viroacoustical Process, J. of Sound and Vibration, 73(4) (1980) 547-561.
• 3. N. Bouraou, Yu. Sopilka, A. Protasov The features Detection of the small rigidity faults of rotary machine element, In Review of Progress in QNDE: Abstracts book (2003).
• 4. N. Bouraou, Yu. Sopilka, A. Protasov, O. Zazhitskiy Decision Making of Aircraft Engine Blades on Bispectral Analysis of the Vibroacoustical Signal, In Review of Progress in QNDE: Conference Proceedings, 24A(2005) 760-766.