Cracking of a Graded Half Plane Due to Sliding Contact

Abstract

In this report the initiation and subcritical growth of surface cracks in graded materials due to sliding contact are considered. After a brief introduction the general coupled crack/contact problem for a semi-infinite graded medium subjected to a sliding rigid stamp of arbitrary profile is formulated. Solving the problem in the absence of any cracks, the complete stress state on the surface of the medium is evaluated and critical stress that would cause surface crack initiation is identified. The coupled problem is then solved, stress intensity factors are calculated and some results are presented.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2001
Accession Number
ADA389046

Entities

People

  • Frazil Erdogan
  • Serkan Dag

Organizations

  • Lehigh University

Tags

DTIC Thesaurus Topics

  • Asymptotic Series
  • Boundaries
  • Crack Tips
  • Department Of Defense
  • Differential Equations
  • Equations
  • Friction
  • Integral Equations
  • Integrals
  • Materials
  • Mechanics
  • Sliding Contacts
  • Stress Concentration
  • Stress Intensity Factors
  • Stresses
  • Surface Properties
  • Wear Resistance

Readers

  • Fluid Dynamics.
  • Materials Science (Mechanical Engineering).
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).