The Use of the Vibroacoustic Method for Monitoring the Technical Condition of Aero Engines with Extended Time between Overhauls

Abstract:

The article presents some aspects of several years of work on the use of the vibroacoustic method (Non-Destructive Testing) for assessing a turboprop engine from a trainer aircraft. The functioning engine does not have an operating system for measuring vibration, and therefore the current levels of vibrations and its changes in trends are not known. In order to extend its service life, performing a number of works was required. On the basis of assessing the current state of the engine, opportunities for further exploitation were identified thus developing methodology for evaluating technical condition regarding the whole population. The paper shortly describes the object and equivalent tests on the engine. The article focuses on the methods prepared for extending life between overhauls required for turboprop engines and discusses the results received during their implementation.

• Periodical: Solid State Phenomena (Volumes 220-221)
• Pages: 283-288
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.220-221.283
• Online since: January 2015
• Authors: Jarosław Spychała*, Paweł Majewski, Mariusz Żokowski
• Keywords: Aero-Engine, NDT Method for Aero-Engines, Vibroacoustic Method

References

[1] P. Majewski, M. Żokowski, M. Deliś, The use of vibration analysis and tribological tests in the process of increasing the lifetime of turboprop aircraft, in: XXXVIII Symposium Diagnostics of Machines, Wisła, Poland, 28 February – 04 March, 2011 (in Polish).

[2] Archive Aero-Engines Division of Air Force Institute of Technology, Warsaw, Poland (unpublished – in Polish).

[3] L.D. Kuzniecow, V.I. Cejtlin, Research equivalent internal combustion engine, Publisher Maszynostrojenije, Moskwa, 1976 (in Russian).