Electric Motor Reliability Model

Abstract

An existing data failure bank consisting of over 2000 actual fractional horsepower (FHP) motor failures was upgraded and utilized to develop a failure model for FHP motors. Motor failures were dominated by two failure modes; i.e., winding failures and bearing failures. A mathematical reliability model was developed for each failure mode utilizing a Weibull cumulative distribution function and regression technique. Results of a literature survey of both failure modes were used to supplement failure data where required and verify the developed models. Failure modes were recombined into a competing risk cumulative distribution model for use in predicting overall motor life and failure rates.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1977
Accession Number
ADA050179

Entities

People

  • D. S. Wilson
  • Roger K. Smith

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Ball Bearings
  • Data Analysis
  • Electric Motors
  • Electronic Equipment
  • Engineering
  • Engineers
  • Failure Mode And Effect Analysis
  • Life Tests
  • Literature Surveys
  • Low Temperature
  • Motors
  • Quality
  • Regression Analysis
  • Reliability
  • Sea Level
  • Test And Evaluation

Fields of Study

  • Engineering

Readers

  • Electrical Engineering
  • Regression Analysis.
  • Structural Health Monitoring of Composite Structures.