VESTNIK of Samara University. Aerospace and Mechanical EngineeringVESTNIK of Samara University. Aerospace and Mechanical Engineering2542-04532541-7533Samara National Research University251910.18287/1998-6629-2014-0-5-2(47)-121-127UnknownPerfection of methods of conducting resonance tests of rotor blades being part of the engineKhorikovA. A.<p>Doctor of Science (Engineering), professor</p>
<p>Head of department</p>khorikov@rtc.ciam.ruDanilkinS. Y.<p>Chief of group</p>danilkin@rtc.ciam.ruRedkinD. A.<p>Engineer</p>danilkin@rtc.ciam.ruCentral Institute of Aviation Motors, Moscow21122014135-21211272306201523062015Copyright © 2015, VESTNIK of the Samara State Aerospace University2015<p>The new method of resonance test of rotor blades using blade oscillation non-contact diagnostics is presented.Diagnosticsis based on narrowband spectral analysis of signals with high static pressure pulsation sensorsmounted on the engine case. Experimental results of the turbomachinery rotor blades dynamic strength atbench tests using non-contact diagnostics resonance vibrations of blades are given. It is studied the resonant vibrationsof rotor blades of the compressor and turbine of experimental turboprop engine and high-pressure compressorof a gas turbine engine with a promising diagnostic method using resonant vibrations of rotor blades bythe signals from the sensors pulsation of static pressure, based on the measurement of pressure fluctuations in theflow of the blades repetition frequency, with using the Campbell diagram, identified by waveform blades, themain harmonic excitation of resonant oscillations of circumferential unevenness flow, as well as modes for theresonance testing of rotor blades. It is shown that the application of the new method can significantly improvethe efficiency and reliability of the rotor blades resonant vibrations diagnostics, and reduce material costs of resonancetesting compared with traditional technology determine the resonant modes on the basis of the calculationmethods.</p>Rotor bladesresonancetestingspectral analysisflowpulsationvibration frequencynon-contact diagnosticsРабочие лопаткирезонансиспытанияспектральный анализпульсации потокачастоты колебанийбесконтактная диагностика[1. Khorikov A.A. Method and diagnostic system for aeroelastic vibrations of rotor blades compressors pulsation sensors // Sb. dokladov konferentsii «Sovershenstvovanie turboustanovok metodami matematicheskogo i fizicheskogo modelirovaniya». Khar'kov: Institut problem mashinostroeniya NAN Ukrainy Publ., 1997.][2. Khorikov A.A., Danilkin S.Y. Sposob diagnostiki rezonansnykh kolebaniy lopatok rabochego kolesa v sostave osevoy turbomashiny [Method of the rotor blades resonance oscillations diagnostics in the composition of axial turbomachine]. Patent RF, no. 2451279, 2012. (Publ. 20.05.2012, bull. no.14)][3. Khorikov A.A., Danilkin S.Y. Ustroystvo diagnostiki rezonansnykh kolebaniy lopatok rabochego kolesa v sostave osevoy turbomashin [Device for the rotor blades resonance oscillations diagnostics in the composition of axial turbomachine]. Patent RF, № 109287, 2011. (Published 10.10.2011, bulletin No. 28)]