Validation of selected presented method measured of length fatigue gap on compressor blades forming during resonant tests

• Autorzy: Kuźniar M. , Bednarz A. , Lichoń D. , Witek L.

Identyfikatory

DOI

10.5604/01.3001.0010.3064

• Języki publikacji: EN

Abstrakty

EN

In this work, the validation of selected presented method measured of length fatigue gap was shown. The article describes three methods of determining fatigue gaps. The object of the study was the first stage compressor blade from aircraft engine. Blades have defects on the leading edge. This defect on the blade (as a result of the resonance vibration) was the origin point of the fatigue gap. Two of the methods, fluorescent and thermovision, were optical. The fluorescent method was a direct measurement, whereas direct-indirect thermography. The last of the presented methods was an analytical method, showing an algorithm based on amplitude-frequency characteristics. The advantages and disadvantages of these methods were compared. As a result of the analysis performed by the algorithm, there were specified patterns defining the dependence of change in crack length depending on the asymmetry of AF characteristics. The accuracy of the following methods and the results obtained for chord length were determined. Thanks to such use, these results have a utilitarian meaning. Such a compilation allowed us to evaluate the usefulness of particular measurement methods. Proposed methods of measuring the length of fatigue crack are used in experimental studies. It is also possible to implement them for research conducted during the operation of an aircraft engine.

Słowa kluczowe

EN

crack propagation; gap; thermovision; turbine engine; blades

• 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: 2017
• Tom: Vol. 24, No. 3
• Strony: 151--158
• Opis fizyczny: Bibliogr. 12 poz., rys.

Twórcy

autor

Kuźniar M.

• Rzeszow University of Technology Department of Aircraft and Aircraft Engines Powstancow Warszawy Street 8, 35-959 Rzeszow, Poland tel.: [phone]

autor

Bednarz A.

• Rzeszow University of Technology Department of Aircraft and Aircraft Engines Powstancow Warszawy Street 8, 35-959 Rzeszow, Poland tel.: [phone]

autor

Lichoń D.

• Rzeszow University of Technology Department of Aircraft and Aircraft Engines Powstancow Warszawy Street 8, 35-959 Rzeszow, Poland tel.: [phone]

autor

Witek L.

• Rzeszow University of Technology Department of Aircraft and Aircraft Engines Powstancow Warszawy Street 8, 35-959 Rzeszow, Poland tel.: [phone]

Bibliografia

• [1] Bednarz, A., Kuźniar, M., Boltynjuk, E., Temperature distribution as a method of measuring crack length in fatigue tests of compressor blade, Zeszyty Naukowe Politechniki Rzeszowskiej – Mechanika, 1, Z. 88, 2016.
• [2] Bednarz, A., Kuźniar, M., Influence of the crack propagation velocity on heat release in compressor blades during fatigue tests, Journal of KONES, Vol. 23, No. 1, pp. 67-74, 2016.
• [3] Endoh, M., Matsuda, Y., Matsuki, M., Non-Contact Measurement of Rotating Blade Vibrations, International Gas Turbine Congress, pp. 953-960, Tokyo 1983.
• [4] Kermanpur, A., Sepehri, A., Ziaei-Red, S., Naorbakhshnia, N., Failure Analysis of Ti6Al4V Gas Turbine Compressor Blade, Engineering Failure Analysis, 15, 1052-1064, 2008.
• [5] Nikhamkin, M., Voronov, L., Semenova, I., Foreign Object Damage and Fatigue Strength Loss in Compressor Blades, Proceedings of ASME Turbo EXPO, Power for Land, Sea and Air GT2008, June 9-13, 2006, ASME paper GT-2008-51493, Berlin, Germany 2008
• [6] Nowell, D., Duo, P., Stewart, I., Prediction of Fatigue Performance in Gas Turbine Blades after Foreign Object Damage, International Journal of Fatigue, 25, 964-969, 2003.
• [7] Szczepanik, R., Badanie warunków zasysania zanieczyszczeń mechanicznych z powierzchni lotniska do wlotów silników odrzutowych, Rozprawa doktorska, WAT, Warszawa 1978.
• [8] Szczepanik, R., Spychała, J., Rokicki, E., Przysowa, R., Pawlak, W., Development of Algorithms for Signal Processing for to Use them for Assessment of Technical Condition Demonstrated by Fluid Flow Machines, Studies of ITWL, No. 71/34, 2006.
• [9] Szczepanik, R., Eksperymentalne badania dynamiki łopatek wirnikowych w różnych warunkach eksploatacji, Zeszyt Naukowy Nr 26, ITWL, Warszawa 2010.
• [10] Witek, L., Bednarz, A., Stachowicz, F., Fatigue analysis of compressor blade with preliminary defect, Engineering Failure Analysis, Vol. 58, Part 1, pp. 229-237, 2015.
• [11] Witek, L., Bednarz, A., Stachowicz, F., Kazarinov, N., Smirnov, I., Crack propagation analysis of compressor blade subjected to resonant vibrations, Proceedings of XLIII International Summer School Conference APM, pp. 473-481, Sankt Petersburg 2015.
• [12] Witoś, M., Szczepanik, R., Turbine Engine Health/Maintenance Status Monitoring with Use of Phase-Discrete method of Blade Vibration Monitoring, Solid State Phenomena, Vol. 147-149, 530-541, 2009.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).