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SAUCEDO-MORA, L. SLÁMEČKA, K. THANDAVAMOORTHY, U. MARROW, T.
Original Title
Multi-scale modeling of damage development in a thermal barrier coating
Type
journal article in Web of Science
Language
English
Original Abstract
A multi-scale Finite Element Microstructure MEshfree (FEMME) fracture model for quasi-brittle materials with complex microstructures is applied to simulate thermo-mechanical damage in a plasma-sprayed thermal barrier coating system. This novel multi-scale technique for damage simulation allows the influence of the microstruc- ture of the yttria-stabilized zirconia top coat and the geometry of the bond coat and the thermally grown oxide layer to be considered with computational efficiency. Mechanical damage, due to the thermal strain of an applied temperature difference, is predicted to decrease the top coat Young's modulus. The interaction between the evolution of damage and temperatures within the top coat is also simulated, demonstrating the capability of this methodology to address coupled multi-scale problems.
Keywords
Thermal barrier coating, Thermally grown oxide, Top coat, Damage, Multi-scale numerical model, Roughness
Authors
SAUCEDO-MORA, L.; SLÁMEČKA, K.; THANDAVAMOORTHY, U.; MARROW, T.
RIV year
2015
Released
25. 8. 2015
ISBN
0257-8972
Periodical
Surface and Coatings Technology
Year of study
276
Number
1
State
Swiss Confederation
Pages from
399
Pages to
407
Pages count
9
BibTex
@article{BUT114978, author="Luis {Saucedo-Mora} and Karel {Slámečka} and Uma {Thandavamoorthy} and Thomas James {Marrow}", title="Multi-scale modeling of damage development in a thermal barrier coating", journal="Surface and Coatings Technology", year="2015", volume="276", number="1", pages="399--407", doi="10.1016/j.surfcoat.2015.06.038", issn="0257-8972" }