Edge Crack Studies in Rotating FGM Disks

Subject Areas : Engineering

H Eskandari ¹

1 - Abadan Institute of Technology, Petroleum University of Technology, Abadan

Received: 2016-06-08 Accepted : 2016-08-02 Published : 2016-09-20

Keywords: Functionally Graded Materials, Rotating discs, Edge crack, Stress intensity factor,

Abstract :

This article focused on the stress analysis of an edge crack in a thin hallow rotating functionally graded material (FGM) disk. The disk is assumed to be isotropic with exponentially varying elastic modulus in the radial direction. A comprehensive study is carried out for various combinations of the crack length and orientation with the different gradation of materials. The effect of non-uniform coefficient of thermal expansion on the distribution of stress intensity factor is also studied. The results which are normalized for the advantage of non-dimensional analysis show that the material gradation, the crack orientation and the crack length have significant influence on the amount of stress intensity factors.

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