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dc.contributor.authorSundaram, S.
dc.contributor.authorLipkin, D. M.
dc.contributor.authorJohnson, C. A.
dc.contributor.authorHutchinson, John W.
dc.date.accessioned2013-01-17T21:02:28Z
dc.date.issued2013
dc.identifier.citationSundaram, S., D. M. Lipkin, C. A. Johnson, and John W. Hutchinson. 2013. The influence of transient thermal gradients and substrate constraint on delamination of thermal barrier coatings. Journal of Applied Mechanics 80(1): 011002.en_US
dc.identifier.issn0021-8936en_US
dc.identifier.issn1528-9036en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:10196729
dc.description.abstractA systematic study of factors affecting the delamination energy release rate and mode mix of a thermal barrier coating attached to a substrate is presented accounting for the influence of thermal gradients combined with rapid hot surface cooling. Transient thermal gradients induce stress gradients through the coating and substrate, which produce overall bending if the substrate is not very thick and if it is not constrained. Due to their influences on the coating stresses, substrate thickness and constraint are important aspects of the mechanics of delamination of coating-substrate systems, which must be considered when laboratory tests are designed and for lifetime assessment under in-service conditions. Temperature gradients in the hot state combined with rapid cooling give rise to a maximum energy release rate for delamination that occurs in the early stage of cooling and that can be considerably larger than the driving force for delamination in the cold state. The rates of cooling that give rise to a large early stage energy release rate are identified.en_US
dc.description.sponsorshipEngineering and Applied Sciencesen_US
dc.language.isoen_USen_US
dc.publisherAmerican Society of Mechanical Engineersen_US
dc.relation.isversionofdoi:10.1115/1.4007727en_US
dash.licenseOAP
dc.subjectthermal barrier coatingsen_US
dc.subjectdelaminationen_US
dc.subjecttemperature gradientsen_US
dc.subjectsubstrate bendingen_US
dc.subjectbending constrainten_US
dc.titleThe Influence of Transient Thermal Gradients and Substrate Constraint on Delamination of Thermal Barrier Coatingsen_US
dc.typeJournal Articleen_US
dc.description.versionAuthor's Originalen_US
dc.relation.journalJournal of Applied Mechanicsen_US
dash.depositing.authorHutchinson, John W.
dc.date.available2013-01-17T21:02:28Z
dc.identifier.doi10.1115/1.4007727*
dash.contributor.affiliatedHutchinson, John


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