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The monitoring of the bearing joints with excessive axial clearances using the FAM-C AND FDM-A methods

Gębura A., Tokarski T.

Prace Naukowe Instytutu Technicznego Wojsk Lotniczych

2010

nr 27

121-136

The intended aim of the paper is to discuss issues resulting from the observation of thee bearing support elements/components in single-shaft turbine engines with excessive axial clearances. Described are parameters and symptoms of such a condition, probable hazards, as well as capabilities of determining it with the FDM-A1 and FAM-C2 methods. Presented are hypotheses formulated by the Authors on subsequent stages of the wearout of bearing support elements/components in an aircraft turbojet engine, which lead to that excessive axial clearances start to arise. Theory of the issue has been completed with results of diagnostic examination of engines and data from the mechanical inspection of the engines after their disassembly.