The Mixed Mode Crack Problem in a Nonhomogeneous Elastic Plane

Abstract

In this paper a nonhomogeneous elastic medium containing a crack arbitrarily oriented with respect to the direction of property gradient is considered. The problem is solved under plane strain or generalized plane stress conditions. This is a highly simplified version of a class of physical problems that may arise in fracture mechanics studies of ceramic coatings, metal/ceramic composites and interfacial zones with continuously varying volume fractions or graded properties. The main results of the paper are the calculated modes I and II stress intensity factors. Among the questions studied are the effects of the material nonhomogeneity constant, the crack orientation, the loading conditions, and the Poisson's ratio on the stress intensity factors. Briefly discussed are also the stress state near the crack tip and the crack opening displacement.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1992
Accession Number
ADA256469

Entities

People

  • F. Erdogan
  • Noboru Konda

Organizations

  • Lehigh University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Applied Mechanics
  • Artificial Intelligence
  • Ceramic Matrix Composites
  • Chebyshev Polynomials
  • Coatings
  • Combustion Chambers
  • Composite Materials
  • Contracts
  • Crack Tips
  • Elastic Properties
  • Integral Equations
  • Materials
  • Mechanics
  • Military Research
  • Plastic Explosives
  • Stress Intensity Factors
  • Stresses

Readers

  • Reinforced Composite Materials
  • Structural Dynamics.