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 coati...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2015-12-01
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| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1661 |
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| author | K. Slámecka P. Skalka L. Celko J. Pokluda L. Saucedo-Mora T. J. Marrow U. Thandavamoorthy |
| author_facet | K. Slámecka P. Skalka L. Celko J. Pokluda L. Saucedo-Mora T. J. Marrow U. Thandavamoorthy |
| author_sort | K. Slámecka |
| 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-48b40f9d07654398942f278d3837f425 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2015-12-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-48b40f9d07654398942f278d3837f4252024-12-02T05:42:34ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932015-12-011035Plasma-sprayed thermal barrier coatings: numerical study on damage localization and evolutionK. SlámeckaP. SkalkaL. CelkoJ. PokludaL. Saucedo-MoraT. J. MarrowU. ThandavamoorthyThermal 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.https://www.fracturae.com/index.php/fis/article/view/1661Thermal barrier coatingsPlasma sprayingFinite element modelling |
| spellingShingle | K. Slámecka P. Skalka L. Celko 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 |
| 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 |
| url | https://www.fracturae.com/index.php/fis/article/view/1661 |
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