Mixed-mode stress intensity factors for an embedded crack in an orthotropic FGM coating

Dağ, Serkan
Erdogan, F.
Analytical and computational methods are developed to examine mixed-mode fracture behaviour of an orthotropic FGM coating bonded to a homogeneous substrate through a layer of a bond-coat. The coating is assumed to contain an embedded crack perpendicular to the direction of the material property gradation. First, an analytical solution is developed considering a perturbation problem. Using Fourier transform, the problem is reduced to a system of singular integral equations which are solved by means of an expansion-collocation technique. Then, finite element method is utilized to investigate the same problem using the displacement correlation technique (DCT). By using the developed finite element method, mixed-mode stress intensity factors are also evaluated for an FGM coating-bond coat-substrate structure that is subjected to thermal stresses.
9th International Conference on Multiscale and Functionally Graded Materials


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Citation Formats
S. Dağ and F. Erdogan, “Mixed-mode stress intensity factors for an embedded crack in an orthotropic FGM coating,” Oahu, HI, 2006, vol. 973, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55218.