An interface crack between a functionally graded coating and a homogeneous substrate under thermo-mechanical loading

Sami El-Borgi, Fazil Erdogan, Fafa Ben Hatira

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this paper, we consider the problem of a functionally graded coating bonded to a homogeneous substrate with a partially insulated interface crack subject to both thermal and mechanical loading. The equations of heat conduction and plane elasticity are converted analytically into singular integral equations which are solved numerically to yield the temperature and the displacement fields in the medium as well as the stress intensity factors. The Finite Element Method was also used to model the crack problem and to compute the crack-tip stress intensity factors using higher order nonhomogeneous elements. The main objective of the paper is to study the effect of the material nonhomogeneity parameters on the crack tip stress intensity factors for further understanding the behavior of graded materials.

Original languageEnglish
Pages (from-to)601-606
Number of pages6
JournalMaterials Science Forum
Volume423-425
Publication statusPublished - 2003
Externally publishedYes

Fingerprint

stress intensity factors
Stress intensity factors
cracks
crack tips
Cracks
coatings
Crack tips
Coatings
Substrates
singular integral equations
Heat conduction
conductive heat transfer
Integral equations
Elasticity
finite element method
inhomogeneity
elastic properties
Finite element method
Temperature
temperature

Keywords

  • Functionally graded coating
  • Singular integral equations
  • Stress intensity factors

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

An interface crack between a functionally graded coating and a homogeneous substrate under thermo-mechanical loading. / El-Borgi, Sami; Erdogan, Fazil; Hatira, Fafa Ben.

In: Materials Science Forum, Vol. 423-425, 2003, p. 601-606.

Research output: Contribution to journalArticle

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