Transmission Overhaul and Replacement Predictions Using Weilbull and Renewal Theory

Abstract

A method to estimate the frequency of transmission overhauls is presented. This method is based on the two-parameter Weibull statistical distribution for component life. A second method is presented to estimate the number of replacement components needed to support the transmission overhaul pattern. The second method is based on renewal theory. Confidence statistics are applied with both methods to improve the statistical estimate of sample behavior. A transmission example is also presented to illustrate the use of the methods. Transmission overhaul frequency and component replacement calculations are included in the example. Keywords: Weibull failure distribution; Renewal theory; Transmissions; Gears; Bearings; Overhauls. (jhd)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1989
Accession Number
ADA213488

Entities

People

  • D. G. Lewicki
  • M. Savage

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Army Aviation
  • Convolution Integrals
  • Data Science
  • Distribution Functions
  • Equations
  • Fatigue Life
  • Information Science
  • Integrals
  • Life Tests
  • Maintenance
  • Probability
  • Probability Density Functions
  • Propulsion Systems
  • Reliability
  • Standards
  • Statistics

Readers

  • Facility/Structural Engineering.
  • Regression Analysis.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).