Effects of TGO growth on the stress distribution and evolution of three-dimensional cylindrical thermal barrier coatings based on finite element simulations

2021 ◽  
Author(s):  
Lin Wang ◽  
Zhuoda Li ◽  
Kunying Ding ◽  
Chen Deng ◽  
Shiyu Zhang ◽  
...  
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Thermal Barrier Coatings ◽  
Three Dimensional ◽  
Finite Element Simulations ◽  
Thermal Barrier ◽  
Barrier Coatings ◽  
Tgo Growth

Finite Element Simulations on Erosion and Crack Propagation in Thermal Barrier Coatings

2015 ◽  
Vol 34 (4) ◽  
Author(s):  
Z. S. Ma ◽  
L. H. Fu ◽  
L. Yang ◽  
Y. C. Zhou ◽  
C. Lu
Keyword(s):  
Finite Element ◽  
Crack Propagation ◽  
Thermal Barrier Coatings ◽  
Impact Angle ◽  
Finite Element Simulations ◽  
Turbine Engines ◽  
Thermal Barrier ◽  
Barrier Coatings ◽  
The Maximum Principle ◽  
Carbon Particles

AbstractErosion of thermal barrier coatings occurs when atmospheric or carbon particles from the combustion chamber are ingested into aviation turbine engines. To understand the influence of erosion on the service life of thermal barrier coatings, we introduce the erosion and crack propagation models, and then by using finite element simulations, determine the relationship between the penetrating depth, the maximum principle stress and impingement variables such as velocity and angle. It is shown that cracks nucleate and extend during the erosion process and the length of a crack increases with the increase of the particle velocity and impact angle.

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