Three dimensional fracture analysis of FGM coatings

Date

2005-01-01

Author

Inan, O
Dağ, Serkan
Erdogan, F

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In this study the three - dimensional surface cracking of a graded coating bonded to a homogeneous substrate is considered. The main objective is to model the subcritical crack growth process in the coated medium under a cyclic mechanical or thermal loading. Because of symmetry, along the crack front conditions of mode I fracture and plane strain deformations are assumed to be satisfied. Thus, at a given location on the crack front the crack propagation rate would be a function of the mode I stress intensity factor. A three - dimensional finite element technique for nonhomogeneous elastic solids is used to solve the problem and the displacement correlation technique is used to calculate the stress intensity factor.

Subject Keywords

Functionally graded materials, Fracture mechanics, 3-D surface cracks, Graded coatings, Subcritical crack propagation

URI

https://hdl.handle.net/11511/63281

Journal

FUNCTIONALLY GRADED MATERIALS VIII

DOI

https://doi.org/10.4028/www.scientific.net/msf.492-493.373

Collections

Department of Mechanical Engineering, Article

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Citation Formats

O. Inan, S. Dağ, and F. Erdogan, “Three dimensional fracture analysis of FGM coatings,” FUNCTIONALLY GRADED MATERIALS VIII, pp. 373–378, 2005, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/63281.