Computational Analysis of Fatigue Crack Propagation at Elevated Temperature for IN718

Abstract:

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Creep damage is an important failure factor of high-temperature alloy. The fatigue crack growth under elevated temperature of the material is investigated for life prediction. In this paper, the numerical simulation of the crack propagation in nickel-based super alloy, IN718, was presented. A modified creep damage model was employed to accumulate the creep damage under cyclic loading conditions. The numerical results exhibit a reasonable agreement in the comparison with the experimental data. The cohesive zone approach, combining with the extended finite element method, has the ability to simulate the creep-fatigue crack propagation even for more complex loading conditions and specimen geometries.

Info:

Periodical:

Edited by:

Wu Fan

Pages:

29-32

DOI:

10.4028/www.scientific.net/AMM.110-116.29

Citation:

G. B. Zhang and H. Yuan, "Computational Analysis of Fatigue Crack Propagation at Elevated Temperature for IN718", Applied Mechanics and Materials, Vols. 110-116, pp. 29-32, 2012

Online since:

October 2011

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Price:

$35.00

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