Estimation of thermal barrier coating fracture toughness using integrated computational materials engineering

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dc.contributor.authorGeng, Xibo
dc.contributor.authorWellman, Richard
dc.contributor.authorArrom, Luis Isern
dc.contributor.authorChalk, Christine
dc.contributor.authorCastelluccio, Gustavo M.
dc.date.accessioned2023-05-22T12:08:04Z
dc.date.available2023-05-22T12:08:04Z
dc.date.issued2023-05-15
dc.description.abstractThe fracture toughness of thermal barrier coatings (TBC) is a critical mechanical property that governs damage resistance. Catastrophic delamination of TBC under erosion conditions occurs in TBC with low toughness. Prior research has explored indirect and complex experiments to measure TBC toughness, but the miniaturized nature of the multi-layered coating makes it difficult to quantify its intrinsic toughness. This paper integrates computational modeling and experimental approaches to estimate the TBC toughness and the substrate delamination strength. The results show that a typical newly fabricated yttrium stabilized zirconia coating under service conditions has a toughness estimated in the range of 0.1–0.5 MPa m1/2 and a toughness of thermally grown oxide layer in between 1.5 and 1.7 MPa m1/2. The analysis also determined that a thermally grown oxide with a fracture toughness above 2.0 MPa m1/2 would not delaminate under the service conditions. Overall, the approach demonstrates the value of integrated computational material approaches, which can save time and enhance predictive power.en_UK
dc.identifier.citationGeng X, Wellman R, Isern Arrom L, et al., (2023) Estimation of thermal barrier coating fracture toughness using integrated computational materials engineering. Ceramics International, Volume 49, Issue 15, 1 August 2023, pp. 25788-25794en_UK
dc.identifier.issn0272-8842
dc.identifier.urihttps://doi.org/10.1016/j.ceramint.2023.05.124
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/19685
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectEB-PVD TBCen_UK
dc.subjectForeign object damageen_UK
dc.subjectCeramic fracture toughnessen_UK
dc.subjectTBC fracture mechanicsen_UK
dc.subjectFinite element analysisen_UK
dc.subjectTBC kink-Bandsen_UK
dc.subjectAnd alumina interface fractureen_UK
dc.titleEstimation of thermal barrier coating fracture toughness using integrated computational materials engineeringen_UK
dc.typeArticleen_UK

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