Fabrication of Ceramic Matrix Composite Tubes Using a Porous Mullite/Alumina Matrix and Alumina/Mullite Fiber

Abstract

Continuous fiber ceramic composites show promise for applications in high-temperature oxidizing environments, but their actual use has been limited in part due to unstable non-oxide-based constituents or from inadequate oxide-based ones. A porous mullite/alumina matrix combined with alumina/mullite fiber reinforcement eliminates the need for an interface coating while producing a strong, tough and oxidation resistant composite. In this study, a fiber-matrix prepreg was produced by infiltrating Nextel 720 cloth with a filter-pressed mullite/alumina slurry through a VibroIntrusion process. This prepreg was used to fabricate thin-walled tubes, which were then pressure burst tested to failure. Post-test evaluation of the tubes and a finite element analysis show that the tubes failed from excessive interlaminar shear stresses. The implications of these results and the utility of the fabrication method used in this study are discussed.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2001
Accession Number
ADA392337

Entities

People

  • Timothy C. Radsick

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aluminum Oxides
  • Ceramic Matrix Composites
  • Composite Materials
  • Elastic Properties
  • Fabrication
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Polymer Matrix Composites
  • Shear Properties
  • Two Dimensional

Fields of Study

  • Materials science

Readers

  • Reinforced Composite Materials