Influence of the coating thickness on strength of the coating-base material composite. Numerical simulation

Ruslan Revovich Balokhonov, V. A. Romanova

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Special features of deformation and fracture of a material with coating of different thickness in tension have been investigated. The boundary-value problem in the plane-strain formulation is solved numerically by the finite-difference method. In calculations, a composite structure is taken into account explicitly. It is found that for thick coatings, a value of stress concentration near the "coating-base material" interface does not change with changes in the coating thickness whereas in the region of small thicknesses it increases nonlinearly with a decrease in the coating thickness. This effect is observed at the elastic stage of composite deformation, it enhances as plastic deformation develops in the base material, and amounts to 25% at the prefracture stage. Recommendations that could be useful for optimization of the coating thickness are given.

Original languageEnglish
Pages (from-to)81-93
Number of pages13
JournalComposites: Mechanics, Computations, Applications
Volume1
Issue number1
DOIs
Publication statusPublished - 2010
Externally publishedYes

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Keywords

  • Coating thickness
  • Composites
  • Mechanics of inhomogeneous media
  • Numerical simulation

ASJC Scopus subject areas

  • Mechanics of Materials
  • Ceramics and Composites

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