A periodic array of cracks in functional graded materials subjected to thermo-mechanical loading

B. L. Wang, Y. W. Mai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

29 Citations (Scopus)

Abstract

A periodic array of cracks in an infinite functionally graded material under mechanical and/or thermal loading is investigated. Due to non-uniform heating or cooling, compressive stresses occur causing the crack surfaces to come into contact at a certain contact length. The mixed boundary value problem is reduced to a singular integral equation with the crack contact length as an additional unknown variable. Numerical results for stress intensity factors and the crack contact length are obtained as a function of crack spacing. Effect of the material non-homogeneity on the crack tip intensity factors is discussed. Some suggestions are made for the design of thermal resistive functionally graded materials.

Original languageEnglish
Pages (from-to)432-446
Number of pages15
JournalInternational Journal of Engineering Science
Volume43
Issue number5-6
DOIs
Publication statusPublished - Mar 2005
Externally publishedYes

Keywords

  • Crack
  • Fracture
  • Functionally graded materials
  • Thermal stresses

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • General Engineering
  • Mechanical Engineering

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