Technical object environment signals and its elimination from diagnostic model

• Autorzy: Golak K. , Grądzki R. , Lindstedt P.
• Języki publikacji: EN

Abstrakty

EN

Diagnostics of many common technical objects (compressor blades, oil pipelines) has been noticed to be realized mostly on the basis of measured diagnostic signals resulting from object operation without sufficient consideration given to usually difficult to measure signals of its environment. Such approach is inconsistent with basic rule of diagnostics that strictly orders research and analysis of technical condition in environment (PN-90/N-04002). Hence many works occurred concerning diagnostics of technical objects (e.g. compressor blades – in motion and in repose), characterized by the fact, that environment signals are taken into consideration without necessity of measuring them [2-7]. A necessity exists to elaborate new object diagnostic methods in repose and in operation including environment but without need (if possible) of using frequently unavailable or difficult to measure environment signals. This problem is solved by diagnostic methods based on diagnostic models allowing, through special operations, for elimination of real environment. Elimination of environment from model is possible as an effect of proper conduct of diagnostic research that in base form should include measurement of environment and diagnostic signals. In models A2 T12T01 and φT12T01 dependence on environment does not occur. Hence each change of model must be interpreted only as change of object technical condition. Such models might be applied for various objects operating in complex environments (eg. oil pipelines, bearings, etc.).

Słowa kluczowe

EN

diagnostic; models; environment; compressor blades; oil pipelines

• 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: 2013
• Tom: Vol. 20, No. 2
• Strony: 121--126
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Golak K.

• Bialystok University of Technology Faculty of Mechanical Engineering Wiejska Street 45C, 15-351 Bialystok, Poland tel.:[phone], fax: [phone]

autor

Grądzki R.

• Bialystok University of Technology Faculty of Mechanical Engineering Wiejska Street 45C, 15-351 Bialystok, Poland tel.:[phone], fax: [phone]

autor

Lindstedt P.

• Air Force Institute of Technology Division of Aircraft Engines Księcia Bolesława Street 6, 01-494 Warszawa, P.O.Box 96 tel.: [phone], fax: [phone]

Bibliografia

• [1] Bendat, J. S., Piersol, A. G., Random data: analysis and measurement procedures, Warszawa, 1976.
• [2] Grądzki, R., The parametric method of evaluation of technical condition of the working turbomachine blade depending on the distribution course representing its environment, Journal of Polish CIMAC, Vol. 6. No. 2, pp. 91-102, Gdansk 2011.
• [3] Kotowski, A., Lindstedt, P., The using of signals of impulse acoustic response in test of rotor blades in stationary conditions, The International Symposium on Stability Control of Rotating Machinery, ISCORMA 4, Calgary Alberta Canada 2007.
• [4] Lindstedt, P., Praktyczna diagnostyka maszyn i jej teoretyczne podstawy, Wydawnictwo Naukowe ASKON, Warszawa 2002.
• [5] Lindstedt, P., Grądzki, R., Premises and the example of parametric method of evaluation of technical condition of the turbomachine blade with elimination of its immesurable environment, Journal of KONBiN, No. 1(17), pp. 179-194, Warsaw 2011.
• [6] Lindstedt, P., Grądzki, R., Model for blade diagnosis in a working rotor machine employing the method of virtual elimination of its stochastic environment, The Archive of Mechanical Engineering, Z. 3, Vol. VLVIII, pp. 305-318, Warsaw 2011.
• [7] Lindstedt, P., Rokicki, E., Borowczyk, H., Majewski, P., Application of the correlation function and Fourier transformation to evaluation of technical condition demonstrated by blade sof a rotor machine during the operation process, Journal of KONES Powertrain and Transport, Vol. 16, No. 2, Warsaw 2009.
• [8] Szabatin, J., Podstawy teorii sygnałów, WKŁ, Warszawa 2000.
• [9] Szczepanik, R., Ocena propagacji pęknięć zmęczeniowych w wirujących łopatkach sprężarki turbinowego silnika lotniczego, Problemy Badań i Eksploatacji Techniki Lotniczej T4, Wyd. ITWL, Warszawa 1999.