Real Time Simultaneous in-Line Wear and Lubricant Condition Monitoring

Abstract

An in-line Complete Oil Breakdown Rate Analyzer (COBRA) and Quantitative Debris Monitor (QDMR) were installed in the oil system of an aircraft turbine engine lubricant simulator. The in-line COBRA readings correlated well with those of a standard laboratory model COBRA and total acid number of the deteriorating lubricant. Increases in QDMR particle counts corresponded with increases in trace iron content, which reflected abnormal wear occurring in the simulator. Analytical and direct reading ferrographic data confirmed the rapid increase and eventual modest decrease in wear debris concentration. After test completion, it was determined that a mainshaft bearing had experienced abnormal wear. Thus, for the first time successful capability for real-time simultaneous in-line wear and lubricant condition monitoring was demonstrated. Keywords: Aircraft engines.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1987
Accession Number
ADA183286

Entities

People

  • F. Dean Price
  • Phillip W. Centers

Organizations

  • Wright Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Biomedical

DTIC Thesaurus Topics

  • Aeronautical Laboratories
  • Air Force
  • Air Force Facilities
  • Aircrafts
  • Analyzers
  • Classification
  • Detectors
  • Engines
  • Gas Turbines
  • Lubricants
  • Lubrication
  • Monitoring
  • Monitors
  • Security
  • Simulators
  • Standards
  • Turbines

Readers

  • Analytical Chemistry
  • Aviation Science / Aeronautics.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).