Effect of Surface Condition on Strength and Fatigue Behavior of Alumina Ceramic

Abstract

The United States Navy is developing deep-water submersible vessels and, in an effort to attain the appropriate strength and buoyancy characteristics, is investigating the suitability of ceramics. The vessels typically consist of cylindrical sections and hemispherical end caps of a ceramic such as aluminum oxide (alumina), which are joined together via metallic rings made of a titanium alloy Tests of such vessels have shown that fatigue cracks may arise in the alumina during submergence-emergence cycles, which ultimately lead to failure of the vessel. This document presents results from a one-year program designed to develop a fatigue-crack-growth resistant interface between the alumina cylinder sections and the titanium alloy rings. Ceramics, External pressure housing, Ocean engineer.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1993
Accession Number
ADA275053

Entities

Organizations

  • Naval Command, Control and Ocean Surveillance Center

Tags

Communities of Interest

  • Advanced Electronics
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Abrasives
  • Ceramic Materials
  • Finishes
  • Grain Boundaries
  • Heat Treatment
  • Ion Exchange
  • Materials
  • Measurement
  • Mechanical Working
  • Standards
  • Strain Gages
  • Surface Acoustic Waves
  • Surface Properties
  • Surface Roughness
  • Titanium Alloys
  • Transducers
  • X Rays

Readers

  • Electrical Engineering
  • Materials Science (Mechanical Engineering).
  • Surface Engineering/Surface Coating Technology.