Detail publikace
Effect of aging on the onset of cracks due to redistribution of residual stresses in functionally graded environmental barrier coatings of mullite /ZrO2
GUIMARAES, J. GARCIA, E. OSENDI, M. ŠEVEČEK, O. BERMEJO, R.
Český název
Effect of aging on the onset of cracks due to redistribution of residual stresses in functionally graded environmental barrier coatings of mullite /ZrO2
Anglický název
Effect of aging on the onset of cracks due to redistribution of residual stresses in functionally graded environmental barrier coatings of mullite /ZrO2
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
In present work, three types of environmental barrier coatings fabricated by air plasma spray and containing a Si layer attached to SiC substrate plus 2 to 5 layers of different mullite/Y-ZrO2 mixtures are examined. To determine the level of residual stresses in the as-prayed coating/substrate systems a three dimensional finite element model is developed and also tested for same coatings but aged under high temperature and rich water vapor atmosphere. The model calculates the zones of maximum tensile stresses in the coatings which agree with experimental observation identifying the type, number and location of cracks.
Český abstrakt
In present work, three types of environmental barrier coatings fabricated by air plasma spray and containing a Si layer attached to SiC substrate plus 2 to 5 layers of different mullite/Y-ZrO2 mixtures are examined. To determine the level of residual stresses in the as-prayed coating/substrate systems a three dimensional finite element model is developed and also tested for same coatings but aged under high temperature and rich water vapor atmosphere. The model calculates the zones of maximum tensile stresses in the coatings which agree with experimental observation identifying the type, number and location of cracks.
Anglický abstrakt
In present work, three types of environmental barrier coatings fabricated by air plasma spray and containing a Si layer attached to SiC substrate plus 2 to 5 layers of different mullite/Y-ZrO2 mixtures are examined. To determine the level of residual stresses in the as-prayed coating/substrate systems a three dimensional finite element model is developed and also tested for same coatings but aged under high temperature and rich water vapor atmosphere. The model calculates the zones of maximum tensile stresses in the coatings which agree with experimental observation identifying the type, number and location of cracks.
Klíčová slova česky
Layered structures, Residual/internal stress, Finite element analysis (FEA), Fractography, Lay-up (manual/automated)
Klíčová slova anglicky
Layered structures, Residual/internal stress, Finite element analysis (FEA), Fractography, Lay-up (manual/automated)
Rok RIV
2014
Vydáno
30.01.2014
Nakladatel
Elsevier
Místo
Velká Británie
ISSN
1359-8368
Ročník
2014
Číslo
61
Strany od–do
199–205
Počet stran
7
BIBTEX
@article{BUT105614,
author="Joana Mesquita {Guimaraes} and Eugenio {Garcia} and Maria Isabel {Osendi} and Oldřich {Ševeček} and Raul {Bermejo},
title="Effect of aging on the onset of cracks due to redistribution of residual stresses in functionally graded environmental barrier coatings of mullite /ZrO2",
year="2014",
volume="2014",
number="61",
month="January",
pages="199--205",
publisher="Elsevier",
address="Velká Británie",
issn="1359-8368"
}