Refining methods of vibration diagnostics of wear of turbo-prop engine differential speed reduction unit gear teeth


The paper presents results of complex research of vibration behavior of the differential reduction gear unit of a turboprop engine on the basis of statistics of products with repaired reduction gears and those placed under repair. The conducted research made it possible to establish the source of resonant oscillations of the compressor design elements leading to their breakage. It is established that this source is determined by the kinematics of the reduction gear unit and is associated with the wear of its gear teeth.  Standards for the intensity of the appropriate discrete component of the reduction gear vibration spectrum and those for the amount of permissible wear are substantiated and established on the basis of the work carried out. A complex of diagnostic parameters of wear based on intensity components of the auto-spectrum and the spectrum of maxima, the depth of amplitude modulation in some narrow-band processes, their characteristics based on the parameters of the current frequency and mutual characteristics was identified. It is shown that for the whole complex of the diagnostic parameters obtained their dependence on the wear value is satisfactorily approximated by a linear characteristic. The obtained results can serve as a basis for the development of a complex of methods of differential reduction gear vibration diagnostics.

About the authors

A. A. Avramenko

Samara National Research University

Author for correspondence.

Candidate of Science (Engineering)
Professor of the Department of Theoretical Mechanics

Russian Federation

A. N. Kryuchkov

Samara National Research University


Doctor of Science (Engineering)
Professor of the Department of Power Plant Automatic Systems

Russian Federation

S. M. Plotnikov

Samara National Research University


Postgraduate Student

Russian Federation

E. V. Sundukov

Public Company Kuznetsov


Candidate of Science (Engineering)
Head of the Integrated Research Laboratory

Russian Federation

A. E. Sundukov

Turbine SK LLC


Candidate of Science (Engineering)

Russian Federation


  1. Grygoriev V.V., Yelansky A.V., Popuga A.I. Conceptual schemes of aircraft engines with high fuel efficiency. Aerospace Technic and Technology. 2013. No. 9 (106). P. 231-236. (In Russ.)
  2. Kravchenko I.F., Edinovich A.V., Yakovlev V.A., Dorofeev V.P. Experimental and theoretical results of the research of aircraft gears. Aerospace Technic and Technology. 2008. No. 8 (55). P. 129-134. (In Russ.)
  3. Kurushin M.I., Balyakin V.B., Kurushin A.M. Experimental investigation of the courses of vibration excitation of elements of gas turbine engines with a differential reduction gearbox. Izvestiya Samarskogo Nauchnogo Tsentra RAN. 2014. V. 16, no. 4. P. 132-136. (In Russ.)
  4. Sundukov A.E., Sundukov E.V., Plotnikov S.M. Vibrodiagnostics of turboprop engine gearbox wear. Vestnik of the Samara State Aerospace University. 2015. V. 14, no. 2. P. 193-201. doi: 10.18287/2412-7329-2015-14-2-193-201 (In Russ.)
  5. Sundukov A.E., Sundukov E.V., Nikolaev V.A. The analysis of influence of parameters of the spectrum of maxima on efficiency of allocation modulating components of vibration of gas turbine engine. Vestnik of the Samara State Aerospace University. 2009. No. 3(19), part 1. P. 147-151. (In Russ.)
  6. Balitsky F.Ya., Sokolova A.G., Dolaberidze G.V., Ivanova M.A. Diagnostics of machine equipment defects in nonlinear vibrodiagnostics by the cascade method demodulation of vibration. Bulletin of Science and Technical Development. 2013. No. 12 (76). P. 3-12. (In Russ.)
  7. Sundukov A.E., Sundukov E.V., Bit-Zaya A.V., Roslyakov A.V. Evaluation of the width of the discrete components of the spectrum of vibration energy machines. Izvestiya Samarskogo nauchnogo tsentra RAN. Spets. vypusk «Problemy zheleznodorozhnogo transporta na sovremennom etape razvitiya». 2006. P. 194-197. (In Russ.)



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