Mechanical behavior of Fiber Reinforced SiC/RBSN Ceramic Matrix Composites: Theory and Experiment

Abstract

The mechanical behavior of continuous fiber reinforced SiC/RBSN composites with various fiber contents is evaluated. Both catastrophic and noncatastrophic failure is observed in specimens tested for tensile strength. Damage and failure mechanisms are identified via in-situ monitoring using nondestructive evaluation techniques throughout the loading history. Effects of fiber/matrix interfaces debonding (splitting) parallel to the fibers are discussed. Statistical failure behavior of fibers is also observed, especially when interfaces are weak. Microstructure models that incorporate residual stresses to calculate the critical matrix cracking strength, ultimate strength and work of pull-out are reviewed and used to predict composite response. For selected test problems, experimental measurements are compared to analytical predictions.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1991
Accession Number
ADA235926

Entities

People

  • Abhisak Chulya
  • John P. Gyekenyesi
  • Ramakrishna T. Bhatt

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Advanced Electronics
  • C4I
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Ceramic Materials
  • Ceramic Matrix Composites
  • Composite Material Fabrication
  • Composite Materials
  • Failure Mode And Effect Analysis
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Silicon Carbide
  • Stress Strain Relations
  • X Ray Film

Fields of Study

  • Materials science

Readers

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