Paper Title:
Computational Analysis of Fatigue Crack Propagation at Elevated Temperature for IN718
| Periodical | Applied Mechanics and Materials (Volumes 110 - 116) |
|---|---|
| Main Theme | Mechanical and Aerospace Engineering |
| Edited by | Wu Fan |
| Pages | 29-32 |
| DOI | 10.4028/www.scientific.net/AMM.110-116.29 |
| Citation | Guo Bin Zhang et al., 2011, Applied Mechanics and Materials, 110-116, 29 |
| Online since | October, 2011 |
| Authors | Guo Bin Zhang, Huang Yuan |
| Keywords | Cohesive Zone Model (CZM), Creep Damage, Fatigue Crack Growth, IN718, X-FEM |
| Price | US$ 28,- |
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Abstract
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.
