Reliability Prediction Studies on Electrical Insulation: Navy Summary Report

Abstract

Reliability prediction studies on magnet wire, motor insulation systems, and aerospace wires, conducted over a span of 20 years, are summarized. Emphasis is on thermal aging of insulation, including problems in development of evaluation methods and equipment, analysis of data, and development of Navy and industry standards. The usefulness of truncating data to save time is discussed, and truncation is found to save up to 20% in testing time. New and improved equipment is described, including a novel condensation chamber that provides a controlled wet humidity cycle during functional evaluation of insulation systems. A recommendation to adjust the Navy's 40,000-h lifeline benchmark is made, on the basis or recent data and field experience. Regression analysis data for 254 magnet wire twist tests and 62 insulation system motorette tests are documented.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 13, 1977
Accession Number
ADA044156

Entities

People

  • E. L. Brancato
  • F. J. Campbell
  • H. P. Walker
  • L. M. Johnson

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Ground and Sea Platforms
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Aircrafts
  • Blood Coagulation Factors
  • Chemical Reactions
  • Confidence Limits
  • Data Analysis
  • Electrical Equipment
  • Engineering
  • Laboratory Tests
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Regression Analysis
  • Standards
  • Systems Engineering
  • Test And Evaluation

Readers

  • Aerospace Test and Evaluation
  • Life Cycle Cost Analysis
  • Polymer Science and Engineering.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems
  • Space