Publication detail

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.

English title

Effect of aging on the onset of cracks due to redistribution of residual stresses in functionally graded environmental barrier coatings of mullite /ZrO2

Type

WoS Article

Language

en

Original abstract

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.

Keywords in English

Layered structures, Residual/internal stress, Finite element analysis (FEA), Fractography, Lay-up (manual/automated)

Released

2014-01-30

Publisher

Elsevier

Location

Velká Británie

ISSN

1359-8368

Journal

COMPOSITES PART B-ENGINEERING

Volume

2014

Number

61

Pages from–to

199–205

Pages count

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",
  journal="COMPOSITES PART B-ENGINEERING",
  year="2014",
  volume="2014",
  number="61",
  pages="199--205",
  doi="10.1016/j.compositesb.2013.11.012",
  issn="1359-8368"
}