The evaluation of the crack-like damage parameter of blades at the vibroacoustical diagnosis of the gas-turbine engines

• Autorzy: Bouraou N. , Ignatovich S.
• Konferencja: Jubilee Symposium Vibrations In Physical Systems (25 ; 15-19.05.2012 ; Będlewo koło Poznania ; Polska)
• Języki publikacji: EN

Abstrakty

EN

This work is devoted to vibroacoustical condition monitoring of the gas-turbine engines (GTE) blades and diagnosis of the crack-like damages at the steady-state and non-steady-state modes of GTE. For detection of the mentioned damages we proposed the application and further development of the low-frequency vibroacoustical diagnostic methods which use vibrating and acoustical noise as diagnostic information. The following amplitude dimensionless characteristics are used as fault features: probability factor, peak factor and factor of background. The evaluation of the crack-like damage of the blades is carried out at the steady-state and nonsteady-state modes by using the generalized likelihood method. The statistical quality of the received estimations is investigated.

Słowa kluczowe

EN

nondestructive evaluation; gas turbine engine; crack-like damage; likelihood method

PL

badanie nieniszczące; silniki gazo-turbinowe; pęknięcie; metoda wiarygodności

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2012
• Tom: Vol. 25
• Strony: 83--88
• Opis fizyczny: Bibliogr. 3 poz., wykr.

Twórcy

autor

Bouraou N.

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

autor

Ignatovich S.

• National Aviation University, 1 Kosmonavta Komarova Pr., Kyiv, Ukraine, 03058

Bibliografia

• 1. N. Bouraou, Iu. Sopilka, Vibroacoustical diagnosis of the crack-like damages of aircraft engine blades at the steady-state and non-steady-state modes, Vibrations in Physical Systems, 24 (2010) 69-74.
• 2. C. Cempel Diagnostically Oriented Measures of Vibroacoustical Process, J. of Sound and Vibration, 73(4) (1980) 547-561.
• 3. B. Levin, Theoretical principles of radio-electronics, Sovetskoe radio, Moscow 1975.