Record number :
1687103
Title of article :
The influence of axial loading on the interface stresses of thermal barrier coatings
Author/Authors :
Bنker، نويسنده , , M. and Rِsler، نويسنده , , J. and Affeldt، نويسنده , , E.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Pages :
5
From page :
466
To page :
470
Abstract :
In this paper, a thermal barrier coating system is studied numerically using finite elements. If the system is isothermally compressed, large stresses at the coating interface may develop due to the differences in Young’s modulus. Since the coefficient of thermal expansion of the substrate differs from those of the coating materials, axial loading of the coating system is also relevant upon cooling. By artificially changing the coefficient of thermal expansion of the coating materials, the effect of axial loading and of stresses due to thermal differential strains in radial direction can be evaluated. Consequences for mechanical loading are discussed, showing that out-of-phase loading of a TBC system unloads critical regions of the TBC on the microscale.
Keywords :
thermal barrier coating , finite element modeling , Thermo-mechanical Fatigue , Failure mechanism
Journal title :
Computational Materials Science
Journal title :
Computational Materials Science
Serial Year :
2009
Link To Document :
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