Fracture Analysis of an All-Ceramic Bearing System

Abstract

The report summarizes the fracture mechanism of an all-ceramic duplex spin bearing which was tested to failure to establish a design load margin. This bearing is part of a gyro-optics assembly being developed for use in an infrared seeker. The analysis revealed that machining-induced microcracks grew in the inner raceways beneath a ball. These microcracks coalesced to form macrocracks which led to fracture of the inner race and the failure of the bearing system.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1994
Accession Number
ADA285056

Entities

People

  • Jeffrey A. Swab
  • Mary P. Sweeney

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerial Warfare
  • Air Force
  • Assembly
  • Ceramic Materials
  • Engineering
  • Failure Mode And Effect Analysis
  • Machining
  • Manufacturing
  • Material Degradation Processes
  • Materials
  • Materials Science
  • Materials Testing
  • Mechanics
  • Military Research
  • Structural Ceramics
  • Technical Ceramics
  • Warfare

Fields of Study

  • Engineering

Readers

  • Materials Science (Mechanical Engineering).
  • Missile Defense Systems.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).