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Tytuł: Parametric studies of failure mechanisms in thermal barrier coatings during thermal cycling using FEM
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Abstract:
Thermal barrier coatings (TBCs) are widely used on different hot components of gas turbine engines such as blades and vanes. Although, several mechanisms for the failure of the TBCs have been suggested, it is largely accepted that the durability of these coatings is primarily determined by the residual stresses that are developed during the thermal cycling. ; In the present study, the residual stress build-up in an electron beam physical vapour deposition (EB-PVD) based TBCs on a coupon during thermal cycling has been studied by varying three parameters such as the cooling rate, TBC thickness and substrate thickness. A two-dimensional thermo-mechanical generalized plane strain finite element simulations have been performed for thousand cycles. It was observed that these variations change the stress profile significantly and the stress severity factor increases non-linearly. Overall, the predictions of the model agree with reported experimental results and help in predicting the failure mechanisms.
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Zielona Góra: Uniwersytet Zielonogórski
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Source:
IJAME, volume 20, number 4 (2015)
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License CC BY-NC-ND 4.0:
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Biblioteka Uniwersytetu Zielonogórskiego
Kolekcje, do których przypisany jest obiekt:
- Repository > Faculties > Faculty of Mechanical Engineering
- Repository > Scientific journals and UZ publishing series > International Journal of Applied Mechanics and Engineering (IJAME) > International Journal of Applied Mechanics and Engineering (IJAME) (2015)
Data ostatniej modyfikacji:
Jul 6, 2023
Data dodania obiektu:
Apr 17, 2023
Liczba wyświetleń treści obiektu:
136
Wszystkie dostępne wersje tego obiektu:
https://zbc.uz.zgora.pl/repozytorium/publication/80935
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| Nazwa wydania | Data |
|---|---|
| Parametric studies of failure mechanisms in thermal barrier coatings during thermal cycling using FEM | Jul 6, 2023 |
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