Evaluation of Influence of Cracks on DVC Coating Using Finite Element Analysis

2013 ◽  
Vol 467 ◽  
pp. 24-28 ◽  
Author(s):  
Sung Hyuk Kim ◽  
Dong Keun Lee ◽  
Jae Mean Koo ◽  
Chang Sung Seok
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Thermal Barrier Coatings ◽  
Crack Depth ◽  
Extreme Environments ◽  
Thermal Barrier ◽  
Element Analysis ◽  
Barrier Coatings ◽  
Coating Fracture

TBCs (Thermal Barrier Coatings) are one technique for assuring appropriate endurance in extreme environments. DVC coating is a type of TBC that is applied by the insertion of artificial vertical cracks in a TBC to reduce the possibility of coating fracture. This study evaluates the influence crack depth and the distance between cracks, which are the main parameters of DVC coating, by FEM (Finite Element Method).

Coupled Thermomechanical Analyses for Thermal Shock of Ceramic/Metal Gradient Thermal Barrier Coatings

2008 ◽  
Vol 368-372 ◽  
pp. 1341-1343
Author(s):  
Jin Sheng Xiao ◽  
Yong Hua Cai ◽  
Zai Li Zhao
Keyword(s):  
Heat Transfer ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Thermal Shock ◽  
Thermal Barrier Coatings ◽  
Shock Intensity ◽  
Thermal Stresses ◽  
Thermal Barrier ◽  
Element Analysis ◽  
Barrier Coatings

A coupled and uncoupled non-linear thermomechanical finite element analysis using ANSYS have been carried out to analyze the heat transfer and associated thermal stresses during different simulated thermal shock processes, and the results of two analyses are discussed. It indicates that piezocaloric effect can be neglect when thermal shock intensity is mild and piezocaloric effect should be taken into account when thermal shock intensity is severe.

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