DC FieldValueLanguage
dc.contributor.authorSchneider, Gerold A.-
dc.contributor.authorSwain, Michael V.-
dc.date.accessioned2020-06-18T06:23:53Z-
dc.date.available2020-06-18T06:23:53Z-
dc.date.issued2015-06-06-
dc.identifier.citationDental Materials 8 (31): 986-991 (2015)de_DE
dc.identifier.issn1879-0097de_DE
dc.identifier.urihttp://hdl.handle.net/11420/6359-
dc.description.abstractObjectives The Schwickerath three point bending adhesion test is the basis of the International Standard ISO 9693:1999 procedure for assessing porcelain bonding to metals [1]. It has also been used to evaluate the adhesion of porcelain to zirconia. The purpose of this paper is a fracture mechanics analysis of this test, which allows determination of the crack-length load-displacement and toughness dependence of cracks extending along or near the interface. Methods Linear elastic mechanics is used to develop expressions for the strain energy and compliance of Schwickerath geometry specimens as a function of crack extension along or near the interface. From the derivative of the compliance as a function of crack growth the strain energy release rate (G, N/m) is determined. Results The energy release rate for interface crack extension of Schwickerath geometry specimens is determined. It is found that a simple relationship between the minima of the force-displacement response and the strain energy release rate G exists. Further development enables the predicted force-displacement response as a function of crack length to be derived for different values of G. Experimental results of porcelain bonded to zirconia with and without notches of various lengths machined along the interface verify the expressions and analysis developed. Significance With the fracture mechanics analysis developed in this paper it is possible to determine the quality of adhesion in Schwickerath specimens by the interface toughness in addition to the nominal interface shear bond strength. As the toughness of brittle materials has much less scatter than its strength, the interface toughness characterization of the adhesion should allow for a better distinction between the adhesion quality of bonding.en
dc.language.isoende_DE
dc.publisherElsevierde_DE
dc.relation.ispartofDental materialsde_DE
dc.subjectAdhesionde_DE
dc.subjectDental materialsde_DE
dc.subjectFracture mechanicsde_DE
dc.subjectInterfacesde_DE
dc.subjectPorcelainde_DE
dc.subjectReliabilityde_DE
dc.subjectSchwickerath testde_DE
dc.subjectZirconiade_DE
dc.subject.ddc600: Technikde_DE
dc.subject.ddc610: Medizinde_DE
dc.titleThe Schwickerath adhesion test: a fracture mechanics analysisde_DE
dc.typeArticlede_DE
dc.type.diniarticle-
dcterms.DCMITypeText-
tuhh.abstract.englishObjectives The Schwickerath three point bending adhesion test is the basis of the International Standard ISO 9693:1999 procedure for assessing porcelain bonding to metals [1]. It has also been used to evaluate the adhesion of porcelain to zirconia. The purpose of this paper is a fracture mechanics analysis of this test, which allows determination of the crack-length load-displacement and toughness dependence of cracks extending along or near the interface. Methods Linear elastic mechanics is used to develop expressions for the strain energy and compliance of Schwickerath geometry specimens as a function of crack extension along or near the interface. From the derivative of the compliance as a function of crack growth the strain energy release rate (G, N/m) is determined. Results The energy release rate for interface crack extension of Schwickerath geometry specimens is determined. It is found that a simple relationship between the minima of the force-displacement response and the strain energy release rate G exists. Further development enables the predicted force-displacement response as a function of crack length to be derived for different values of G. Experimental results of porcelain bonded to zirconia with and without notches of various lengths machined along the interface verify the expressions and analysis developed. Significance With the fracture mechanics analysis developed in this paper it is possible to determine the quality of adhesion in Schwickerath specimens by the interface toughness in addition to the nominal interface shear bond strength. As the toughness of brittle materials has much less scatter than its strength, the interface toughness characterization of the adhesion should allow for a better distinction between the adhesion quality of bonding.de_DE
tuhh.publisher.doi10.1016/j.dental.2015.05.007-
tuhh.publication.instituteKeramische Hochleistungswerkstoffe M-9de_DE
tuhh.type.opus(wissenschaftlicher) Artikel-
dc.type.driverarticle-
dc.type.casraiJournal Article-
tuhh.container.issue8de_DE
tuhh.container.volume31de_DE
tuhh.container.startpage986de_DE
tuhh.container.endpage991de_DE
local.status.inpressfalsede_DE
item.languageiso639-1en-
item.grantfulltextnone-
item.openairetypeArticle-
item.cerifentitytypePublications-
item.creatorOrcidSchneider, Gerold A.-
item.creatorOrcidSwain, Michael V.-
item.fulltextNo Fulltext-
item.creatorGNDSchneider, Gerold A.-
item.creatorGNDSwain, Michael V.-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
crisitem.author.deptKeramische Hochleistungswerkstoffe M-9-
crisitem.author.orcid0000-0001-5780-6249-
crisitem.author.orcid0000-0002-8801-8656-
crisitem.author.parentorgStudiendekanat Maschinenbau-
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