AN AXISYMMETRIC PROBLEM OF A PARTIALLY INSULATED CRACK EMBEDDED IN A GRADED LAYER BONDED TO A HOMOGENEOUS HALF-SPACE UNDER THERMAL LOADING Academic Article

abstract

• The elastic-static problem of a partially insulated axisymmetric crack embedded in a graded coating bonded to a homogeneous substrate subjected to thermal loading is considered. The coating's gradient is parallel to the axisymmetric direction and is orthogonal to the crack plane. The graded coating is modeled as a nonhomogeneous medium with an isotropic constitutive law. Using Hankel transform, the heat conduction and the plane elasticity equations are converted into singular integral equations, which are solved numerically to yield the temperature distribution and the crack tip stress intensity factors. The Finite Element Method was additionally used to model the crack problem. The main objective of this paper is to study the influence of the material nonhomogeneity, partial insulation of the crack faces and the crack position on the stress intensity factors for the purpose of gaining better understanding on the behavior of graded coatings. Copyright 2011 Taylor & Francis Group, LLC.

authors

• El Borgi, Sami

published proceedings

• JOURNAL OF THERMAL STRESSES

author list (cited authors)

• Rekik, M., Neifar, M., & El-Borgi, S.

citation count

• 12

complete list of authors

• Rekik, M||Neifar, M||El-Borgi, S

publication date

• February 2011

publisher

• Taylor & Francis  Publisher

published in

• Journal of Thermal Stresses  Journal

keywords

• Finite Elements Method
• Graded Coating
• Mixed-mode Loading
• Partially Insulated Crack
• Singular Elements
• Singular Integral Equations
• Stress Intensity Factors

Digital Object Identifier (DOI)

• 10.1080/01495739.2010.511948

start page

• 201

end page

• 227

volume

• 34

issue

• 3

URL

• http://dx.doi.org/10.1080/01495739.2010.511948