Application of the correlation function and Fourier transformation to evaluation of technical condition demonstrated by blades of a rotor machine during the operation process

• Autorzy: Lindstedt P. , Rokicki E. , Borowczyk H.
• Języki publikacji: EN

Abstrakty

EN

The paper presents fundamentals of a new method for monitoring of technical condition demonstrated by blades of rotor machines during operation there of. The method involves the diagnostic model expressed as a qutient of the amplitude amplification for the diagnostic signaly (t) that results from the blade impact and the signal x(t) produced by the blade surrounding when the blade tip approaches the sensor, divided by the amplitude amplification of these signals when the blade tip has already passed the sensor position and moves away. The adopted diagnostic model takes account for current surrounding of the blade x(t) with no need of measurements of its parameters [12, 14]. Thus, the model is sensitive to alterations of the technical condition demonstrated by the blade but very little vulnerable to variations in the blade surroundings. Consequently, the proposed method may be able to play an important role for diagnostics of rotor blades during operation there of. The presented method applicable to monitoring of changes in technical condition of a blade is an innovative approach to carry out diagnostic of the blade in its natural environment with no need to measure signals from that environment.

Słowa kluczowe

EN

diagnostics of blades; correlation function; power spectral density (PSD) function; amplitude amplification

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2009
• Tom: Vol. 16, No. 2
• Strony: 263--269
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Lindstedt P.

autor

Rokicki E.

autor

Borowczyk H.

• Air Force Institute of Technology (AFIT) Księcia Boleslawa Street 6, 01-494 Warsaw, Poland tel: [phone], fax: [phone],

Bibliografia

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