Probabilistic damage tolerance analysis on turbine disk through experimental data

被引：39

作者：

Hu, Dianyin ^{[1
]}

Wang, Rongqiao ^{[1
]}

Fan, Jiang ^{[1
]}

Shen, Xiuli ^{[1
]}

机构：

[1] Beihang Univ, Sch Jet Prop, Beijing 100191, Peoples R China

来源：

ENGINEERING FRACTURE MECHANICS | 2012年 / 87卷

关键词：

Turbine disk; Damage tolerance; Stochastic fatigue crack growth model; FATIGUE-CRACK-GROWTH; PROPAGATION;

D O I：

10.1016/j.engfracmech.2012.03.008

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A probabilistic analysis on damage tolerance of turbine disk based on experimental data was performed in this paper. Firstly, the fatigue crack growth rate tests at 600 degrees C on 30 compact tension specimens were conducted to investigate the fatigue crack growth characteristics. Experimental results showed that crack growth life appeared great dispersancy. Then a stochastic fatigue crack growth model was proposed and the probability of random crack growth time to reach a specified crack size as well as the distribution function of crack size at the service time could be obtained. At last, considering the uncertainties, probabilistic analysis on the crack growth life of a turbine disk was achieved. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：73 / 82

页数：10

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