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International Journal on Interactive Design and Manufacturing (IJIDeM)

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18-09-2020 | Original Paper

Computation of SIFs for cracks in FGMs and TBC under mechanical and thermal loadings

Authors: Yazid Ait Ferhat, Abdelkader Boulenouar

Published in: International Journal on Interactive Design and Manufacturing (IJIDeM) | Issue 4/2020

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Abstract

The objective of this study is to present a numerical modeling of mixed-mode fracture in isotropic functionally graded materials (FGMs), under mechanical and thermal loading conditions. In this paper, a modified displacement extrapolation technique DET was proposed to calculate the stress intensity factor (SIFs) for isotropic FGMs. Using the Ansys Parametric Design Language, the continuous variations of the material properties are incorporated by specified parameters at the centroid of each element. Four numerical examples are presented to evaluate the accuracy of SIFs calculated by the proposed method. Comparisons have been made between the SIFs predicted by the DET and the available reference solutions in the current literature. A good agreement is obtained between the results of the DET and the reference solutions.

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Title: Computation of SIFs for cracks in FGMs and TBC under mechanical and thermal loadings
Authors: Yazid Ait Ferhat
Abdelkader Boulenouar
Publication date: 18-09-2020
Publisher: Springer Paris
Published in: International Journal on Interactive Design and Manufacturing (IJIDeM) / Issue 4/2020
Print ISSN: 1955-2513
Electronic ISSN: 1955-2505
DOI: https://doi.org/10.1007/s12008-020-00675-8

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