Fatigue Crack Growth Analysis Models for Functionally Graded Materials

Journal Article · Fri Feb 15 04:00:00 EST 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2896816· OSTI ID:21055255

Dag, Serkan ^[1]; Yildirim, Bora ^[2]; Sabuncuoglu, Baris

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1. Department of Mechanical Engineering, Middle East Technical University, Ankara 06531 (Turkey)
2. Department of Mechanical Engineering, Hacettepe University, Ankara 06800 (Turkey)

The objective of this study is to develop crack growth analysis methods for functionally graded materials (FGMs) subjected to mode I cyclic loading. The study presents finite elements based computational procedures for both two and three dimensional problems to examine fatigue crack growth in functionally graded materials. Developed methods allow the computation of crack length and generation of crack front profile for a graded medium subjected to fluctuating stresses. The results presented for an elliptical crack embedded in a functionally graded medium, illustrate the competing effects of ellipse aspect ratio and material property gradation on the fatigue crack growth behavior.

• OSTI ID: 21055255
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 973; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CRACK PROPAGATION
CRACKS
FATIGUE
FINITE ELEMENT METHOD
FRACTURE MECHANICS
LOADING
MODIFICATIONS
STRAINS
STRESSES
THREE-DIMENSIONAL CALCULATIONS