Characterization of Fatigue Behavior of 2-D Woven Fabric Reinforced Ceramic Matrix Composite at Elevated Temperature.

Abstract

This study investigated the fatigue behavior and associated damage mechanisms in notched and unnotched enhanced Sic/SiC ceramic matrix composite specimens at 1100 deg C. Stiffness degradation, strain variation, and hysteresis were evaluated to characterize material behavior. Microscopic examination was performed to characterize damage mechanisms. During high cycle/low stress fatigue tests, far less fiber/matrix interface debond was evident than in low cycle/high stress fatigue tests. Notched specimens exhibited minimal stress concentration during monotonic tensile testing and minimal notch sensitivity during fatigue testing. Damage mechanisms were also similar to unnotched.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1994
Accession Number
ADA289423

Entities

People

  • Daniel J. Groner

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Ceramic Materials
  • Ceramic Matrix Composites
  • Composite Materials
  • Failure Mode And Effect Analysis
  • Materials
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Notch Sensitivity
  • Stress Concentration
  • Stress Strain Relations
  • Stresses
  • Tensile Testing
  • Test And Evaluation

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials