Wear Measurement of Ceramic Bearings in Gas Turbines

Abstract

The objective of this program was to determine the feasibility of measuring ceramic bearing wear in real time. The method chosen is to selectively introduce a radioactive tag into the surface of a ceramic part and to measure the wear amount by monitoring the strength of the tagging activity as the test progresses. Although this method has been used for many years in the automobile and heavy machinery industries, it has not yet been used to measure the extremely minute amounts of wear which are experienced by ball bearings. This program was analytical in nature, and its principal take was to show the feasibility and accuracy of such a technique applied to Si3N4 and Sic ceramic bearing components. In addition the goal was to develop the analytical theory and operational techniques needed for wear tests. Keywords: Wear analysis, Activation, Turbine engines.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1990
Accession Number
ADA227505

Entities

People

  • A. J. Armini
  • S. N. Bunker

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Bearings
  • Ceramic Materials
  • Computer Programs
  • Computers
  • Detectors
  • Energy Bands
  • Equations
  • Friction
  • Gas Turbines
  • Geometry
  • Lubrication
  • Measurement
  • Nuclear Reactions
  • Scattering
  • Silicon Carbide
  • Turbines

Readers

  • Computational Modeling and Simulation
  • Thin Film Deposition Science.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).