Please use this identifier to cite or link to this item: https://doi.org/10.15480/882.765
DC FieldValueLanguage
dc.contributor.authorBechtle, Sabine-
dc.contributor.authorFett, Theo-
dc.contributor.authorRizzi, Gabriele-
dc.contributor.authorHabelitz, Stefan-
dc.contributor.authorSchneider, Gerold A.-
dc.contributor.otherFett, Theode_DE
dc.contributor.otherRizzi, Gabrielede_DE
dc.contributor.otherHabelitz, Stefande_DE
dc.contributor.otherSchneider, Gerold A.de_DE
dc.date.accessioned2010-02-26T10:23:59Zde_DE
dc.date.available2010-02-26T10:23:59Zde_DE
dc.date.issued2010-05-
dc.identifier.citationJournal of the mechanical behavior of biomedical materials ; vol. 3.2010, 4 p. 303-312de_DE
dc.identifier.issn1751-6161de_DE
dc.identifier.other619948779de_DE
dc.identifier.urihttp://tubdok.tub.tuhh.de/handle/11420/767-
dc.description.abstractFracture toughness resistance curves describe a material’s resistance against crack propagation. These curves are often used to characterize biomaterials like bone, nacre or dentin as these materials commonly exhibit a pronounced increase in fracture toughness with crack extension due to co-acting mechanisms as crack bridging, crack deflection and microcracking. The knowledge of appropriate stress intensity factors which depend on sample and crack geometry is essential for determining these curves. For the dental biomaterials enamel and dentin it was observed that under bending and tensile loading crack propagation occurs under certain constant angles to the initial notch direction during testing procedures used for fracture resistance curves determination. For this special crack geometry (kink crack of finite length in a finite body) appropriate geometric function solutions are missing. Hence, we present in this study new mixed-mode stress intensity factors for kink cracks with finite kink length within samples of finite dimensions for two loading cases (tension and bending)which were derived from a combination of mixed-mode stress intensity factors of kink cracks with infinitely small kinks and of slant cracks. These results were further applied to determine fracture resistance curves of enamel and dentin by testing single edge notched bending(SENB) specimens. It was found that kink cracks with finite kink length exhibit identical stress fields as slant cracks as soon as the kink length exceeds 0,15 times the initial straight crack or notch length. The usage of stress intensity factor solutions for infinitely small kink cracks for the determination of dentin fracture resistance curves (as was done by other researchers) leads to an overestimation of dentin’s fracture resistance of up to 30%.en
dc.language.isoende_DE
dc.publisherElsevierde_DE
dc.relation.ispartofJournal of the mechanical behavior of biomedical materialsde_DE
dc.rightsinfo:eu-repo/semantics/openAccessde_DE
dc.rights.urihttp://doku.b.tu-harburg.de/doku/lic_ohne_pod.phpde
dc.subjectRisswiderstandskurven, Spannungsintensitätsfaktorde_DE
dc.subjectfracture resistance curves, stress intensity factor, kink crakcs, enamel, dentinde_DE
dc.titleMixed-mode stress intensity factors for kink cracks with finite kink length loaded in tension and bendingde_DE
dc.typeArticlede_DE
dc.date.updated2010-05-17T11:57:00Zde_DE
dc.identifier.doi10.15480/882.765-
dc.type.diniarticle-
dc.subject.gndBruchmechanikde
dc.subject.gndDentinde
dc.subject.gndZahnschmelzde
dc.subject.ddccode620-
dcterms.DCMITypeText-
tuhh.publikation.typworkingPaperde_DE
tuhh.publikation.sourceJournal of the mechanical behavior of biomedical materials ; vol. 3.2010de_DE
tuhh.opus.id851de_DE
tuhh.gvk.ppn619948779de_DE
tuhh.oai.showtruede_DE
dc.identifier.hdl11420/767-
tuhh.abstract.englishFracture toughness resistance curves describe a material’s resistance against crack propagation. These curves are often used to characterize biomaterials like bone, nacre or dentin as these materials commonly exhibit a pronounced increase in fracture toughness with crack extension due to co-acting mechanisms as crack bridging, crack deflection and microcracking. The knowledge of appropriate stress intensity factors which depend on sample and crack geometry is essential for determining these curves. For the dental biomaterials enamel and dentin it was observed that under bending and tensile loading crack propagation occurs under certain constant angles to the initial notch direction during testing procedures used for fracture resistance curves determination. For this special crack geometry (kink crack of finite length in a finite body) appropriate geometric function solutions are missing. Hence, we present in this study new mixed-mode stress intensity factors for kink cracks with finite kink length within samples of finite dimensions for two loading cases (tension and bending)which were derived from a combination of mixed-mode stress intensity factors of kink cracks with infinitely small kinks and of slant cracks. These results were further applied to determine fracture resistance curves of enamel and dentin by testing single edge notched bending(SENB) specimens. It was found that kink cracks with finite kink length exhibit identical stress fields as slant cracks as soon as the kink length exceeds 0,15 times the initial straight crack or notch length. The usage of stress intensity factor solutions for infinitely small kink cracks for the determination of dentin fracture resistance curves (as was done by other researchers) leads to an overestimation of dentin’s fracture resistance of up to 30%.de_DE
tuhh.publisher.doi10.1016/j.jmbbm.2009.12.004-
tuhh.publication.instituteKeramische Hochleistungswerkstoffe M-9de_DE
tuhh.identifier.doi10.15480/882.765-
tuhh.type.opus(wissenschaftlicher) Artikel-
tuhh.institute.germanKeramische Hochleistungswerkstoffe M-9de
tuhh.institute.englishAdvanced Ceramics M-9en
tuhh.institute.id56de_DE
tuhh.type.id17de_DE
tuhh.gvk.hasppntrue-
tuhh.hasurnfalse-
openaire.rightsinfo:eu-repo/semantics/openAccessde_DE
dc.type.driverarticle-
dc.identifier.oclc930768512-
dc.rights.cchttps://creativecommons.org/licenses/by-nc-nd/4.0/de_DE
dc.type.casraiJournal Article-
tuhh.container.issue4de_DE
tuhh.container.volume3de_DE
tuhh.container.startpage303de_DE
tuhh.container.endpage312de_DE
dc.rights.nationallicensefalsede_DE
item.fulltextWith Fulltext-
item.languageiso639-1en-
item.creatorGNDBechtle, Sabine-
item.creatorGNDFett, Theo-
item.creatorGNDRizzi, Gabriele-
item.creatorGNDHabelitz, Stefan-
item.creatorGNDSchneider, Gerold A.-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.creatorOrcidBechtle, Sabine-
item.creatorOrcidFett, Theo-
item.creatorOrcidRizzi, Gabriele-
item.creatorOrcidHabelitz, Stefan-
item.creatorOrcidSchneider, Gerold A.-
item.openairetypeArticle-
item.grantfulltextopen-
crisitem.author.deptKeramische Hochleistungswerkstoffe M-9-
crisitem.author.deptKeramische Hochleistungswerkstoffe M-9-
crisitem.author.orcid0000-0001-7201-5779-
crisitem.author.orcid0000-0001-5780-6249-
crisitem.author.parentorgStudiendekanat Maschinenbau-
crisitem.author.parentorgStudiendekanat Maschinenbau-
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