Effect of mean stress on multiaxial ratcheting life: A simplified life prediction model based on average equivalent stress amplitude

2015 ◽  
Vol 50 (6) ◽  
pp. 366-372 ◽  
Author(s):  
Surajit Kumar Paul ◽  
Timothy B Hilditch
Keyword(s):  
Prediction Model ◽  
Life Prediction ◽  
Stress Amplitude ◽  
Equivalent Stress ◽  
Mean Stress ◽  
Model Based ◽  
Equivalent Stress Amplitude ◽  
Life Prediction Model

scholarly journals A Fatigue Life Prediction Model Based on Modified Resolved Shear Stress for Nickel-Based Single Crystal Superalloys

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 180 ◽  
Author(s):  
Jialiang Wang ◽  
Dasheng Wei ◽  
Yanrong Wang ◽  
Xianghua Jiang
Keyword(s):  
Shear Stress ◽  
Fatigue Life ◽  
Prediction Model ◽  
Single Crystal ◽  
Life Prediction ◽  
Stress Amplitude ◽  
Damage Parameter ◽  
Fatigue Life Prediction ◽  
Model Based ◽  
Life Prediction Model

In this paper, the viewpoint that maximum resolved shear stress corresponding to the two slip systems in a nickel-based single crystal high-temperature fatigue experiment works together was put forward. A nickel-based single crystal fatigue life prediction model based on modified resolved shear stress amplitude was proposed. For the four groups of fatigue data, eight classical fatigue life prediction models were compared with the model proposed in this paper. Strain parameter is poor in fatigue life prediction as a damage parameter. The life prediction results of the fatigue life prediction model with stress amplitude as the damage parameter, the fatigue life prediction model with maximum resolved shear stress in 30 slip directions as the damage parameter, and the McDiarmid (McD) model, are better. The model proposed in this paper has higher life prediction accuracy.

Drillpipe Fatigue Life Prediction Model Based On Critical Plane Approaches

1994 ◽  
Author(s):  
J.C.R. Plácido ◽  
J.J. Azar ◽  
J.R. Sorem ◽  
Franz Kessler ◽  
S.M. Tipton
Keyword(s):  
Fatigue Life ◽  
Prediction Model ◽  
Life Prediction ◽  
Fatigue Life Prediction ◽  
Critical Plane ◽  
Model Based ◽  
Life Prediction Model
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