Damage Mechanism and Life Prediction of Graphite/Epoxy Composites

2009 ◽  
pp. 229-229-14 ◽  
Author(s):  
R Badaliance ◽  
HD Dill
Keyword(s):  
Life Prediction ◽  
Damage Mechanism ◽  
Epoxy Composites

Atomistic simulation of interfacial properties and damage mechanism in graphene nanoplatelet/epoxy composites

2020 ◽  
Vol 184 ◽  
pp. 109888
Author(s):  
Abolfazl Alizadeh Sahraei ◽  
Abdol Hadi Mokarizadeh ◽  
Masumeh Foroutan ◽  
Daniel George ◽  
Denis Rodrigue ◽  
...  
Keyword(s):  
Atomistic Simulation ◽  
Interfacial Properties ◽  
Damage Mechanism ◽  
Epoxy Composites ◽  
Graphene Nanoplatelet

Continuum damage mechanism-based life prediction for Ni-based superalloy under complex loadings

2013 ◽  
Vol 30 (4) ◽  
pp. 287-294 ◽  
Author(s):  
Duoqi Shi ◽  
Xiaoan Hu ◽  
Xiaoguang Yang ◽  
Jinlong Liu
Keyword(s):  
Life Prediction ◽  
Damage Mechanism ◽  
Continuum Damage

Thermomechanical fatigue life prediction method for nickel-based superalloy in aeroengine turbine discs under multiaxial loading

2019 ◽  
Vol 28 (9) ◽  
pp. 1344-1366 ◽  
Author(s):  
Fang-Dai Li ◽  
De-Guang Shang ◽  
Cheng-Cheng Zhang ◽  
Xiao-Dong Liu ◽  
Dao-Hang Li ◽  
...  
Keyword(s):  
Fatigue Damage ◽  
Cyclic Deformation ◽  
Deformation Behavior ◽  
Life Prediction ◽  
Prediction Method ◽  
Creep Damage ◽  
Damage Mechanism ◽  
Thermomechanical Fatigue ◽  
Nickel Based Superalloy ◽  
Creep Fatigue

The multiaxial thermomechanical fatigue properties for nickel-based superalloy GH4169 in aeroengine turbine discs are investigated in this paper. Four types of axial–torsional thermomechanical fatigue experiments were performed to identify the cyclic deformation behavior and the damage mechanism. The experimental results showed that the creep damage can be generated under thermally in-phase loading while it can be ignored under thermally out-of-phase loading, and the responded stress increasing phenomenon, that is, non-proportional hardening, can be shown under the mechanically out-of-phase strain loading. Based on the analysis of cyclic deformation behavior and damage mechanism, a life prediction method was proposed for multiaxial thermomechanical fatigue, in which the pure fatigue damage, the creep damage, and the interaction between them were simultaneously considered. The pure fatigue damage can be calculated by the isothermal fatigue parameters corresponding to the temperature without creep; the creep damage can be calculated by the principle of subdivision, and the creep–fatigue interaction can be determined by creep damage, fatigue damage, and an interaction coefficient which is used to reflect the creep–fatigue interaction strength. The predicted results showed that the proposed method is reasonable.

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