Plasma-sprayed thermal barrier coatings: numerical study on damage localization and evolution
Thermal barrier coatings (TBCs) are advanced material systems used to enhance performance and in-service life of components operated at high temperatures in gas turbines and other power-generation devices. Because of complexity, numerical methods became important tools both for design of these coa...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2016-01-01
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| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero35/numero_35_art_37.pdf |
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| author | K. Slámečka P. Skalka L. Čelko J. Pokluda L. Saucedo-Mora T. J. Marrow U. Thandavamoorthy |
| author_facet | K. Slámečka P. Skalka L. Čelko J. Pokluda L. Saucedo-Mora T. J. Marrow U. Thandavamoorthy |
| author_sort | K. Slámečka |
| collection | DOAJ |
| description | Thermal barrier coatings (TBCs) are advanced material systems used to enhance performance and
in-service life of components operated at high temperatures in gas turbines and other power-generation devices.
Because of complexity, numerical methods became important tools both for design of these coatings and for
in-service life estimations and optimization. In this contribution, two main features that affect the TBCs’
performance, namely the roughness of the bond coat and the microstructure of the ceramic top coat, are
discussed based on Finite Element Method (FEM) and Finite Element Microstructure MEshfree (FEMME)
simulations that were used to calculate stresses and assess damage within the coating. Roughness data obtained
from plasma-sprayed CoNiCrAlY + YSZ coated samples are supplemented to discuss assumptions and results
of employed numerical models. |
| format | Article |
| id | doaj-art-bed6414c90084c3f9fa95dbf41091f9e |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-bed6414c90084c3f9fa95dbf41091f9e2025-02-03T10:30:40ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932016-01-01103532232910.3221/IGF-ESIS.35.37Plasma-sprayed thermal barrier coatings: numerical study on damage localization and evolutionK. Slámečka0P. Skalka1L. Čelko2J. Pokluda3L. Saucedo-Mora4T. J. Marrow5U. Thandavamoorthy6Brno University of Technology,Czech RepublicBrno University of Technology,Czech RepublicBrno University of Technology,Czech RepublicBrno University of Technology,Czech RepublicUniversity of Oxford,UKUniversity of Oxford,UKEcole des Mines de Nantes,FranceThermal barrier coatings (TBCs) are advanced material systems used to enhance performance and in-service life of components operated at high temperatures in gas turbines and other power-generation devices. Because of complexity, numerical methods became important tools both for design of these coatings and for in-service life estimations and optimization. In this contribution, two main features that affect the TBCs’ performance, namely the roughness of the bond coat and the microstructure of the ceramic top coat, are discussed based on Finite Element Method (FEM) and Finite Element Microstructure MEshfree (FEMME) simulations that were used to calculate stresses and assess damage within the coating. Roughness data obtained from plasma-sprayed CoNiCrAlY + YSZ coated samples are supplemented to discuss assumptions and results of employed numerical models.http://www.gruppofrattura.it/pdf/rivista/numero35/numero_35_art_37.pdfThermal barrier coatingsPlasma sprayingFinite element modellingMulti-scale numerical modelRoughness |
| spellingShingle | K. Slámečka P. Skalka L. Čelko J. Pokluda L. Saucedo-Mora T. J. Marrow U. Thandavamoorthy Plasma-sprayed thermal barrier coatings: numerical study on damage localization and evolution Fracture and Structural Integrity Thermal barrier coatings Plasma spraying Finite element modelling Multi-scale numerical model Roughness |
| title | Plasma-sprayed thermal barrier coatings: numerical study on damage localization and evolution |
| title_full | Plasma-sprayed thermal barrier coatings: numerical study on damage localization and evolution |
| title_fullStr | Plasma-sprayed thermal barrier coatings: numerical study on damage localization and evolution |
| title_full_unstemmed | Plasma-sprayed thermal barrier coatings: numerical study on damage localization and evolution |
| title_short | Plasma-sprayed thermal barrier coatings: numerical study on damage localization and evolution |
| title_sort | plasma sprayed thermal barrier coatings numerical study on damage localization and evolution |
| topic | Thermal barrier coatings Plasma spraying Finite element modelling Multi-scale numerical model Roughness |
| url | http://www.gruppofrattura.it/pdf/rivista/numero35/numero_35_art_37.pdf |
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