Microstructure/Property Relationships for SCS6/Timetal 21-S Composite

Abstract

Fracture surfaces of tensile test specimens from SCS6/Timetal 21-S composites with (0)4 or (0/90)s ply sequences were examined to characterize the failure processes. Fracture surface topography analysis (FRASTA) was used to quantitatively characterize the fracture surfaces. Results indicate that the topographies of the matrix fracture surfaces are a strong function of processes that occur during the rapid reduction in load after the maximum load. Failure of the matrix in all composites occurs after the maximum load is reached and after some or all of the O deg fibers have failed. Only part of the matrix phase of the 90 deg plies in a (0/90)s composite contributes to the tensile strength. The interface strength between the fibers and the matrix is negligible and does not contribute significantly to the strength of the composite. Metal matrix composites, Tensile test, SiC Fiber, Mechanical properties, Fracture surface analysis, Titanium alloy

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1993
Accession Number
ADA275056

Entities

People

  • Charles G. Schmidt
  • Christine H. Kanazawa
  • Donald A. Shockey
  • Takao Kobayashi

Organizations

  • SRI International

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Composite Materials
  • Electron Microscopes
  • Materials
  • Materials Engineering
  • Materials Science
  • Mechanical Properties
  • Metal Matrix Composites
  • Metals
  • Microscopes
  • Stress Strain Relations
  • Stresses
  • Surface Analysis
  • Tensile Properties
  • Tensile Strength
  • Titanium
  • Titanium Alloys
  • Topography

Fields of Study

  • Materials science

Readers

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