An embedded crack in a graded coating bonded to a homogeneous substrate under thermo-mechanical loading

Sami El-Borgi, L. Hidri, R. Abdelmoula

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The problem of an embedded partially insulated crack in a graded coating bonded to a homogeneous substrate under thermal and mechanical loading is considered. The heat conduction and the plane elasticity equations are converted into singular integral equations which are solved to yield the temperature and the displacement fields in the medium as well as the crack tip stress intensity factors. A crack-closure algorithm is applied to avoid interpenetration. The main objective of the paper is to study the effect of the coating nonhomogeneity parameters, partial insulation of the crack surfaces and crack-closure on the crack tip stress intensity factors for the purpose of gaining better understanding of the thermo-mechanical behavior of graded coatings.

Original languageEnglish
Pages (from-to)439-466
Number of pages28
JournalJournal of Thermal Stresses
Volume29
Issue number5
DOIs
Publication statusPublished - May 2006
Externally publishedYes

Fingerprint

crack closure
Crack closure
cracks
stress intensity factors
crack tips
Cracks
coatings
Stress intensity factors
Crack tips
Coatings
Substrates
singular integral equations
surface cracks
Heat conduction
conductive heat transfer
insulation
Integral equations
Insulation
Elasticity
inhomogeneity

Keywords

  • Crack-closure
  • Functionally graded coating
  • Partially insulated crack
  • Stress intensity factors

ASJC Scopus subject areas

  • Mechanics of Materials
  • Computational Mechanics
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes

Cite this

An embedded crack in a graded coating bonded to a homogeneous substrate under thermo-mechanical loading. / El-Borgi, Sami; Hidri, L.; Abdelmoula, R.

In: Journal of Thermal Stresses, Vol. 29, No. 5, 05.2006, p. 439-466.

Research output: Contribution to journalArticle

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