Small-Scale Crack Bridging and the Fracture Toughness of Particulate-Reinforced Ceramics,

Abstract

Theoretical analyses of small-scale bridging of crack surfaces by elastic-ideally plastic springs are presented and applied to the study of the fracture toughness of ceramics reinforced by small particles. The dependence of toughening on particle size, concentration, strength, and ductility is explored, and relations between toughening and bridge length at fracture are given. Available experimental information is examined in the light of the analyses. Keywords: particulate toughening; Metal reinforced ceramics. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1987
Accession Number
ADA183208

Entities

People

  • Anthony G. Evans
  • Bernard Budiansky
  • John C. Amazigo

Organizations

  • Harvard University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Consistency
  • Crack Tips
  • Ductility
  • Equations
  • Far Field
  • Integral Equations
  • J Integrals
  • Materials
  • Mechanics
  • Metals
  • Particle Size
  • Particles
  • Stress Intensity Factors
  • Stresses
  • Structural Ceramics
  • Universities

Readers

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