Mechanics of Brittle-Matrix Composites

Abstract

Model brittle matrix composites (SiC fibers and borosilicate glass) demonstrated that good matrix cracking stress is achievable only when a good matrix interfacial bond exists. Improvement in this matrix cracking stress can be seen with increasing fiber volume and lowered radial residual compressive stress. The ability to measure the fiber-matrix normal interfacial strength in a composite was demonstrated using a model system in a cruciform sample geometry. An analytical model of ceramic composites based on observed damage progression was developed based on simultaneous stress application and microscopic observations. The damage state of the ceramic composite was successfully incorporated into the model to generate changes in the mechanical behavior. The measurement of coating modulus in BMCs was demonstrated using a micro indentor technique.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1997
Accession Number
ADA343686

Entities

People

  • Ran Y. Kim

Organizations

  • University of Dayton

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Ceramic Matrix Composites
  • Composite Materials
  • Elastic Properties
  • Failure Mode And Effect Analysis
  • Geometry
  • Laminates
  • Materials
  • Materials Processing
  • Materials Testing
  • Measurement
  • Mechanical Working
  • Mechanics
  • Micromechanics
  • Modulus Of Elasticity
  • Silicon Carbide
  • Stress Strain Relations
  • Three Dimensional

Fields of Study

  • Materials science

Readers

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