A novel fatigue-oxidation-creep life prediction method under non-proportional loading

2021 ◽  
pp. 105805
Author(s):  
Dao-Hang Li ◽  
De-Guang Shang ◽  
Xiang Yin ◽  
Ming Li ◽  
Feng Chen ◽  
...  
Keyword(s):  
Life Prediction ◽  
Prediction Method ◽  
Creep Life ◽  
Proportional Loading ◽  
Creep Life Prediction

Creep Life Prediction of Aircraft Turbine Disc Alloy Using Continuum Damage Mechanics

2017 ◽  
Vol 38 (1) ◽  
pp. 25-30
Author(s):  
Yan-Feng Li ◽  
Zhisheng Zhang ◽  
Chenglin Zhang ◽  
Jie Zhou ◽  
Hong-Zhong Huang
Keyword(s):  
Numerical Analysis ◽  
Test Data ◽  
Life Prediction ◽  
Damage Mechanics ◽  
Continuum Damage Mechanics ◽  
Creep Model ◽  
Continuum Damage ◽  
Creep Life ◽  
Creep Life Prediction ◽  
Turbine Disc

Abstract This paper deals with the creep characteristics of the aircraft turbine disc material of nickel-base superalloy GH4169 under high temperature. From the perspective of continuum damage mechanics, a new creep life prediction model is proposed to predict the creep life of metallic materials under both uniaxial and multiaxial stress states. The creep test data of GH4169 under different loading conditions are used to demonstrate the proposed model. Moreover, from the perspective of numerical simulation, the test data with analysis results obtained by using the finite element analysis based on Graham creep model is carried out for comparison. The results show that numerical analysis results are in good agreement with experimental data. By incorporating the numerical analysis and continuum damage mechanics, it provides an effective way to accurately describe the creep damage process of GH4169.

A modified θ projection model for constant load creep curves-II. Application of creep life prediction

2019 ◽  
Vol 35 (4) ◽  
pp. 687-694 ◽  
Author(s):  
Chao Fu ◽  
Yadong Chen ◽  
Xiaofei Yuan ◽  
Sammy Tin ◽  
Stoichko Antonov ◽  
...  
Keyword(s):  
Life Prediction ◽  
Constant Load ◽  
Creep Life ◽  
Projection Model ◽  
Creep Life Prediction ◽  
Creep Curves
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