Non Destructive Evaluation of Ceramic Bearings.

Abstract

Through a phase II SBIR MICOM funded Quatro to evaluate the Resonant Ultrasound Spectroscopy (RUS) techniques to ceramic bearings, specifically those made with Si3N4. The light weight, high temperature and hardness attributes of this material are well known, but a concern exists regarding their manufacturablity, quality and failure mechanisms. The determination of surface and near surface flaws is an operational problem which has hindered the acceptance of this material into widespread commercial applications. Before RUS no non-destructive inspection technique was able to rapidly and reliably find all the manufacturing flaws which could be present in this material and their location relative to the surface. jg p. 4

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Document Details

Document Type
Technical Report
Publication Date
Feb 04, 1994
Accession Number
ADA293637

Entities

People

  • George W. Rhodes

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Autonomy
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Aerospace Industry
  • Ceramic Materials
  • Computations
  • Elastic Properties
  • Failure Mode And Effect Analysis
  • Frequency
  • High Temperature
  • Materials
  • Materials Handling
  • Measurement
  • Modulus Of Elasticity
  • Shear Modulus
  • Surface Acoustic Waves
  • Test And Evaluation
  • Thermal Expansion
  • Transducers

Fields of Study

  • Materials science

Readers

  • Educational Psychology
  • Structural Health Monitoring of Composite Structures.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).