Analysis of Mixed-Mode Cracks in a Rubbery Particulate Composite

Abstract

The mixed-mode loading of a rubbery particulate composite is studied experimentally. Linear fracture mechanics concepts are used to determine the initiation of growth, the initial growth direction, and the subsequent growth rate for a range of mode mixities. The fracture toughness locus is determined to be elliptical, with the mode II toughness being lower than its mode I counterpart. The initial growth directions correlate with maximum strain energy density theories. The crack growth rates can be modeled effectively using an equivalent mode I crack.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1998
Accession Number
ADA386237

Entities

People

  • Timothy C. Miller

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Boundaries
  • Composite Materials
  • Crack Tips
  • Cracks
  • Engineering
  • Failure Mode And Effect Analysis
  • Fracture (Mechanics)
  • Geometry
  • J Integrals
  • Materials
  • Mechanics
  • Particulates
  • Stress Intensity Factors
  • Stress Strain Relations
  • Stresses

Readers

  • Materials Science (Mechanical Engineering).