Publication detail

Multi-scale modeling of damage development in a thermal barrier coating

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"
}