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A probabilistic model for prediction of LCF life of PM alloys

Xiao‐Jun Yan (School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, People's Republic of China)
Hao‐Yue Li (School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, People's Republic of China)
Jing‐Xu Nie (School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, People's Republic of China)

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 1 June 2004

Abstract

Inclusions have been shown to be the most significant factor to decrease the low cycle fatigue (LCF) life in powder metallurgy (PM) alloys used by most of turbine discs for advanced turboengines. In this paper, effects of inclusions on PM alloys' LCF life are evaluated through the definition of initial damage value D0 based on damage mechanics. By investigating the relationship between D0 and characteristic dimension of inclusions, Bussac's probabilistic model is extended to consider surface and internal inclusions together.

Keywords

Citation

Yan, X., Li, H. and Nie, J. (2004), "A probabilistic model for prediction of LCF life of PM alloys", Aircraft Engineering and Aerospace Technology, Vol. 76 No. 3, pp. 286-292. https://doi.org/10.1108/00022660410536014

Publisher

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Emerald Group Publishing Limited

Copyright © 2004, Emerald Group Publishing Limited