Effect of a functionally graded interlayer on three-dimensional elastic deformation of coated plates subjected to transverse loading

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Conventional coatings, which usually consist of one or two homogeneous layers deposited on a substrate, are susceptible to cracking and debonding due to the mismatch of thermomechanical properties between the coating and the substrate. To overcome this disadvantage and increase resistance of coatings to functional failure, the concept of functionally graded material (FGM) is being actively explored in coating design. Although an FGM coating certainly eliminates the abrupt change in material properties and stress discontinuity at the coating/substrate interface, it may be not an optimal solution to the problem.

This paper investigates the bending response of coated plates subjected to transverse loading with functionally graded interlayer between the substrate and the top coat. The Young's modulus of the interlayer is assumed to vary exponentially through the thickness. The analysis employs three-dimensional elasticity solution for a functionally graded rectangular plate, recently developed by the first author, and is valid of plate of any thickness-to-length ratio. A comparative study of coated plates with and without an FGM interlayer is carried out, and the dependence of stress and displacement fields in the plate on the stiffness gradient in the coating is examined and discussed. (C) 2008 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)167-176
Number of pages10
JournalComposite Structures
Volume89
Issue number2
DOIs
Publication statusPublished - Jun 2009

Keywords

  • functionally graded material
  • coating
  • plate
  • three-dimensional elasticity theory
  • interface crack problem
  • coating/substrate system
  • fracture-analysis
  • antiplane deformation
  • spallation mechanism
  • contact mechanics
  • plane deformation
  • finite thickness
  • coatings
  • substrate

Cite this

@article{86667d7fe151480eb62005d1803fdb59,
title = "Effect of a functionally graded interlayer on three-dimensional elastic deformation of coated plates subjected to transverse loading",
abstract = "Conventional coatings, which usually consist of one or two homogeneous layers deposited on a substrate, are susceptible to cracking and debonding due to the mismatch of thermomechanical properties between the coating and the substrate. To overcome this disadvantage and increase resistance of coatings to functional failure, the concept of functionally graded material (FGM) is being actively explored in coating design. Although an FGM coating certainly eliminates the abrupt change in material properties and stress discontinuity at the coating/substrate interface, it may be not an optimal solution to the problem.This paper investigates the bending response of coated plates subjected to transverse loading with functionally graded interlayer between the substrate and the top coat. The Young's modulus of the interlayer is assumed to vary exponentially through the thickness. The analysis employs three-dimensional elasticity solution for a functionally graded rectangular plate, recently developed by the first author, and is valid of plate of any thickness-to-length ratio. A comparative study of coated plates with and without an FGM interlayer is carried out, and the dependence of stress and displacement fields in the plate on the stiffness gradient in the coating is examined and discussed. (C) 2008 Elsevier B.V. All rights reserved.",
keywords = "functionally graded material, coating, plate, three-dimensional elasticity theory, interface crack problem, coating/substrate system, fracture-analysis, antiplane deformation, spallation mechanism, contact mechanics, plane deformation, finite thickness, coatings, substrate",
author = "Maria Kashtalyan and Maryna Menshykova",
year = "2009",
month = "6",
doi = "10.1016/j.compstruct.2008.07.007",
language = "English",
volume = "89",
pages = "167--176",
journal = "Composite Structures",
issn = "0263-8223",
publisher = "Elsevier BV",
number = "2",

}

TY - JOUR

T1 - Effect of a functionally graded interlayer on three-dimensional elastic deformation of coated plates subjected to transverse loading

AU - Kashtalyan, Maria

AU - Menshykova, Maryna

PY - 2009/6

Y1 - 2009/6

N2 - Conventional coatings, which usually consist of one or two homogeneous layers deposited on a substrate, are susceptible to cracking and debonding due to the mismatch of thermomechanical properties between the coating and the substrate. To overcome this disadvantage and increase resistance of coatings to functional failure, the concept of functionally graded material (FGM) is being actively explored in coating design. Although an FGM coating certainly eliminates the abrupt change in material properties and stress discontinuity at the coating/substrate interface, it may be not an optimal solution to the problem.This paper investigates the bending response of coated plates subjected to transverse loading with functionally graded interlayer between the substrate and the top coat. The Young's modulus of the interlayer is assumed to vary exponentially through the thickness. The analysis employs three-dimensional elasticity solution for a functionally graded rectangular plate, recently developed by the first author, and is valid of plate of any thickness-to-length ratio. A comparative study of coated plates with and without an FGM interlayer is carried out, and the dependence of stress and displacement fields in the plate on the stiffness gradient in the coating is examined and discussed. (C) 2008 Elsevier B.V. All rights reserved.

AB - Conventional coatings, which usually consist of one or two homogeneous layers deposited on a substrate, are susceptible to cracking and debonding due to the mismatch of thermomechanical properties between the coating and the substrate. To overcome this disadvantage and increase resistance of coatings to functional failure, the concept of functionally graded material (FGM) is being actively explored in coating design. Although an FGM coating certainly eliminates the abrupt change in material properties and stress discontinuity at the coating/substrate interface, it may be not an optimal solution to the problem.This paper investigates the bending response of coated plates subjected to transverse loading with functionally graded interlayer between the substrate and the top coat. The Young's modulus of the interlayer is assumed to vary exponentially through the thickness. The analysis employs three-dimensional elasticity solution for a functionally graded rectangular plate, recently developed by the first author, and is valid of plate of any thickness-to-length ratio. A comparative study of coated plates with and without an FGM interlayer is carried out, and the dependence of stress and displacement fields in the plate on the stiffness gradient in the coating is examined and discussed. (C) 2008 Elsevier B.V. All rights reserved.

KW - functionally graded material

KW - coating

KW - plate

KW - three-dimensional elasticity theory

KW - interface crack problem

KW - coating/substrate system

KW - fracture-analysis

KW - antiplane deformation

KW - spallation mechanism

KW - contact mechanics

KW - plane deformation

KW - finite thickness

KW - coatings

KW - substrate

U2 - 10.1016/j.compstruct.2008.07.007

DO - 10.1016/j.compstruct.2008.07.007

M3 - Article

VL - 89

SP - 167

EP - 176

JO - Composite Structures

JF - Composite Structures

SN - 0263-8223

IS - 2

ER -