Brick model for nonlinear deformation and microcracking in thermal barrier coating

Thermal barrier coatings (TBCs) applied to turbine blades indicate nonlinear deformation and complex fracture behavior due to the microstructure which is formed by deposition of molten particles. In this study, in order to accurately simulate these behaviors observed in TBC, finite element analysis...

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Autores principales:	Eito YONEMICHI, Hiroaki KATORI, Masayuki ARAI, Kiyohiro ITO, Tatsuo SUIDZU
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2020
Materias:	gas turbine thermal barrier coating finite element method brick model nonlinear deformation crack propagation path Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/b15bfa93547a4c8b847e4451a64982a9
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spelling	oai:doaj.org-article:b15bfa93547a4c8b847e4451a64982a92021-11-29T05:53:24ZBrick model for nonlinear deformation and microcracking in thermal barrier coating2187-974510.1299/mej.20-00010https://doaj.org/article/b15bfa93547a4c8b847e4451a64982a92020-03-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/7/2/7_20-00010/_pdf/-char/enhttps://doaj.org/toc/2187-9745Thermal barrier coatings (TBCs) applied to turbine blades indicate nonlinear deformation and complex fracture behavior due to the microstructure which is formed by deposition of molten particles. In this study, in order to accurately simulate these behaviors observed in TBC, finite element analysis based on the brick model combined with cohesive model and the inelastic constitutive equation was established. First, bending tests of freestanding YSZ sample specimens extracted from TBC-coated sample deposited under different particle velocity conditions were performed to identify its deformation and fracture behaviors prior to FE analysis. As a result, the bending test revealed that the maximum load, the maximum deflection, and the crack propagation path varied significantly depending on the particle velocity. Subsequently, the FE procedure combined with the brick and inelastic constitutive models was developed, and it was confirmed that the FE analysis based on the brick model can accurately simulate nonlinear deformation and complex crack propagation path observed in a micro-scale.Eito YONEMICHIHiroaki KATORIMasayuki ARAIKiyohiro ITOTatsuo SUIDZUThe Japan Society of Mechanical Engineersarticlegas turbinethermal barrier coatingfinite element methodbrick modelnonlinear deformationcrack propagation pathMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 7, Iss 2, Pp 20-00010-20-00010 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	gas turbine thermal barrier coating finite element method brick model nonlinear deformation crack propagation path Mechanical engineering and machinery TJ1-1570
spellingShingle	gas turbine thermal barrier coating finite element method brick model nonlinear deformation crack propagation path Mechanical engineering and machinery TJ1-1570 Eito YONEMICHI Hiroaki KATORI Masayuki ARAI Kiyohiro ITO Tatsuo SUIDZU Brick model for nonlinear deformation and microcracking in thermal barrier coating
description	Thermal barrier coatings (TBCs) applied to turbine blades indicate nonlinear deformation and complex fracture behavior due to the microstructure which is formed by deposition of molten particles. In this study, in order to accurately simulate these behaviors observed in TBC, finite element analysis based on the brick model combined with cohesive model and the inelastic constitutive equation was established. First, bending tests of freestanding YSZ sample specimens extracted from TBC-coated sample deposited under different particle velocity conditions were performed to identify its deformation and fracture behaviors prior to FE analysis. As a result, the bending test revealed that the maximum load, the maximum deflection, and the crack propagation path varied significantly depending on the particle velocity. Subsequently, the FE procedure combined with the brick and inelastic constitutive models was developed, and it was confirmed that the FE analysis based on the brick model can accurately simulate nonlinear deformation and complex crack propagation path observed in a micro-scale.
format	article
author	Eito YONEMICHI Hiroaki KATORI Masayuki ARAI Kiyohiro ITO Tatsuo SUIDZU
author_facet	Eito YONEMICHI Hiroaki KATORI Masayuki ARAI Kiyohiro ITO Tatsuo SUIDZU
author_sort	Eito YONEMICHI
title	Brick model for nonlinear deformation and microcracking in thermal barrier coating
title_short	Brick model for nonlinear deformation and microcracking in thermal barrier coating
title_full	Brick model for nonlinear deformation and microcracking in thermal barrier coating
title_fullStr	Brick model for nonlinear deformation and microcracking in thermal barrier coating
title_full_unstemmed	Brick model for nonlinear deformation and microcracking in thermal barrier coating
title_sort	brick model for nonlinear deformation and microcracking in thermal barrier coating
publisher	The Japan Society of Mechanical Engineers
publishDate	2020
url	https://doaj.org/article/b15bfa93547a4c8b847e4451a64982a9
work_keys_str_mv	AT eitoyonemichi brickmodelfornonlineardeformationandmicrocrackinginthermalbarriercoating AT hiroakikatori brickmodelfornonlineardeformationandmicrocrackinginthermalbarriercoating AT masayukiarai brickmodelfornonlineardeformationandmicrocrackinginthermalbarriercoating AT kiyohiroito brickmodelfornonlineardeformationandmicrocrackinginthermalbarriercoating AT tatsuosuidzu brickmodelfornonlineardeformationandmicrocrackinginthermalbarriercoating
_version_	1718407607620730880

Brick model for nonlinear deformation and microcracking in thermal barrier coating

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