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dc.creatorBoccaccini, Dino N.
dc.creatorCannio, Maria
dc.creatorVolkov-Husović, Tatjana
dc.creatorDlouhy, I.
dc.creatorRomagnoli, Marcello
dc.creatorVeronesi, Paolo
dc.creatorLeonelli, Christina
dc.date.accessioned2021-03-10T11:00:12Z
dc.date.available2021-03-10T11:00:12Z
dc.date.issued2008
dc.identifier.issn0955-2219
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/1351
dc.description.abstractViscoelastic bridges can be formed in refractory ceramics while cooling from high temperatures. Such bridges can shield crack tips, thus reducing the effective crack tip stress intensity factors leading to higher resistance to creep and thermal shock. The extent to which the crack tip stress intensity is reduced can be estimated from fracture mechanics models that include experimental measurement of crack bridging and microstructural parameters. In this paper a novel approach is proposed for the assessment of the effective crack bridging toughening from combining destructive and non-destructive test methods. Fracture toughness values were determined applying chevron notched specimen technique and surface damage of the specimen was monitored by image analysis. Different cordierite-mullite compositions characterized by different microstructure morphologies and crack propagation behaviour were investigated. A brief discussion about the correlation between thermo-mechanical properties, microstructure, crack propagation behaviour and thermal shock resistance is presented. Moreover, an empirical model able to determine the presence and effectiveness of the viscoelastic crack bridging ligaments acting in the microstructure under thermal shock conditions and their degradation with increasing thermal shock cycles from parameters measured at room temperature is presented.en
dc.publisherElsevier Sci Ltd, Oxford
dc.rightsrestrictedAccess
dc.sourceJournal of the European Ceramic Society
dc.subjectcordierite-mulliteen
dc.subjectviscoelastic tougheningen
dc.subjectfracture toughnessen
dc.subjectimage analysisen
dc.subjectfracture mechanicsen
dc.titleAssessment of viscoelastic crack bridging toughening in refractory materialsen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage1951
dc.citation.issue10
dc.citation.other28(10): 1941-1951
dc.citation.rankaM21
dc.citation.spage1941
dc.citation.volume28
dc.identifier.doi10.1016/j.jeurceramsoc.2008.01.021
dc.identifier.scopus2-s2.0-43049149003
dc.identifier.wos000256559600003
dc.type.versionpublishedVersion


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