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Wysokoczułe metody detekcji zmęczenia
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Abstrakty
The diagnostic and research aspects of compressor blade fatigue detection are investigated in the paper. The authors review the characteristic of different modes of metal blade fatigue (LCF, HCF, VHCF). The polycrystalline defects and impurities influencing the fatigue, along with their related surface finish techniques, are taken into account. The three experimental methods of structural health assessment are considered. Early damage symptoms, i.e. modal properties of material strengthening and weakening phases (structural and magnetic anisotropy) have been described.
W artykule przedstawiono doświadczenia z badań stoiskowych i diagnozowania zmęczenia łopatek sprężarki. Wskazano typowe przypadki zmęczenia metalowych łopatek (LCF, HCF i VHCF). W rozważaniach uwzględniono cechy rzeczywistego materiału konstrukcyjnego, w tym wpływ domieszek, defektów struktury polikrystalicznej i obróbki wykańczającej na zmęczenie materiału. Przedstawiono trzy metody badawcze stosowane do monitorowania stanu technicznego. Opisano wczesne symptomy zmęczenia, m.in. właściwości modalne fazy umocnienia i osłabienia (strukturalnej i magnetycznej anizotropii).
Czasopismo
Rocznik
Tom
Strony
307--326
Opis fizyczny
Bibliogr. 37 poz., rys.
Twórcy
autor
- Instytut Techniczny Wojsk Lotniczych (Air Force Institute of Technology, AFIT)
autor
- Instytut Techniczny Wojsk Lotniczych (Air Force Institute of Technology, AFIT)
Bibliografia
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- [4] Washburn R. (2004): Amplitude and Phase Variations Associated with Low Order Resonance Responses Subjected to Time Varying Excitation Sources. Proc. of 9th National Turbine Engine High Cycle Fatigue Conference
- [5] Zielinski M., Ziller G. (2005): Noncontact Crack Detection on Compressor Rotor Blades to Prevent Further Damage after HC-Failure. RTO MP-AVT-121 Meeting Proceedings, NATO, paper 19, http://www.mtu.de
- [6] Witos, M., Szczepanik, R. (2005): Turbine Engine Health/Maintenance Status Monitor-ing with Use of Phase-Discrete Method of Blade Vibration Monitoring. RTO-MP-AVT -121 Meeting Proceedings, NATO, paper 2
- [7] Duan F., Fang Z., Sun Y., Ye S. (2005): Real-time Vibration Measurement Technique Based on Tip-timing for Rotating Blades. Opto-Electronic Engineering, Vol. 30(1), pp. 29-31
- [8] Ayes B.W., Arnold S., Vining Ch., Howard R. (2005): Application of Generation 4 Non-contact Stress Measurement System on HCF Demonstrator Engines. Proc. of 10th National Turbine Engine High Cycle Fatigue (HCF) Conference. Dayton, USA
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- [11] Witos M. (2008): On the Modal Analysis of a Cracking Compressor Blade. Research works of AFIT, Issue 23, pp. 21-36
- [12] Vlasov V.T., Dubov A.A. (2004): Physical Bases of the Metal Magnetic Memory Method. ZAO “Tisso” Publishing House, Moscow
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- [37] Gui Y. S., Wirthmann A., Macking N., Hu C.-M. (2009): Direct measurement of nonlinear ferromagnetic damping via the intrinsic foldover effect. Phys. Rev. B 80, 060402(R)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-634f75f3-6486-4cd8-a169-08aade1dc482