Biaxial (Tension-Torsion) Testing of an Oxide/Oxide Ceramic Matrix Composite

Abstract

High temperatures and structural loads in advanced aerospace structures often result in complex loading conditions. This study is focused on biaxial (tension-torsion) testing of an oxide-oxide porous matrix ceramic matrix composite (CMC) (NextelTM 720/AS) thin wall tube with a novel involute layup. Tests included pure torsion and biaxial (tension- torsion) loading. Strain gages were used in addition to digital image correlation (DIC) to measure strains and to detect crack initiation and propagation. Room temperature and 1100 deg C uniaxial tests were performed in a build up approach prior to biaxial (tension-torsion) testing. Double-notch shear (DNS) specimens were tested at 1100 deg C in air to obtain interlaminar shear strength (ILSS).

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2013
Accession Number
ADA579147

Entities

People

  • Joseph M. Derienzo

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Axial Loads
  • Ceramic Matrix Composites
  • Composite Materials
  • Failure Mode And Effect Analysis
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Measurement
  • Mechanical Working
  • Mechanics
  • Polymer Matrix Composites
  • Shear Strength
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Reinforced Composite Materials
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Space