About: Carbon nanotubes: do they toughen brittle matrices?

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The development of a model CNT-brittle matrix composite system, based on SiO2 glass containing well-dispersed CNTs at up to 15 wt%, allows a direkt assessment of the effect of the nanoscale filler on fracture toughness (KIC). Samples were prepared by colloidal heterocoagulation followed by spark plasma sintering. Detailed KIC easurements, using both indentation and notched beam techniques, show a linear improvement with CNT content, with up to a twofold increase of fracture toughness at maximum loading. The results from the two methods used in this study show equivalent trends but differing absolute values; the relative merits of these two approaches to measuring nanocomposite toughness are compared. Possible toughening mechanisms associated with CNT pull-out, crack bridging, and crack deflection are identified, and discussed quantitatively, drawing on conventional short-fibre composite theory and the potential effects of scaling fibre diameter. The development of a model CNT-brittle matrix composite system, based on SiO2 glass containing well-dispersed CNTs at up to 15 wt%, allows a direkt assessment of the effect of the nanoscale filler on fracture toughness (KIC). Samples were prepared by colloidal heterocoagulation followed by spark plasma sintering. Detailed KIC easurements, using both indentation and notched beam techniques, show a linear improvement with CNT content, with up to a twofold increase of fracture toughness at maximum loading. The results from the two methods used in this study show equivalent trends but differing absolute values; the relative merits of these two approaches to measuring nanocomposite toughness are compared. Possible toughening mechanisms associated with CNT pull-out, crack bridging, and crack deflection are identified, and discussed quantitatively, drawing on conventional short-fibre composite theory and the potential effects of scaling fibre diameter. (en)
Title	Carbon nanotubes: do they toughen brittle matrices? Carbon nanotubes: do they toughen brittle matrices? (en)
skos:prefLabel	Carbon nanotubes: do they toughen brittle matrices? Carbon nanotubes: do they toughen brittle matrices? (en)
skos:notation	RIV/68081723:_____/11:00359267!RIV12-AV0-68081723
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA101/09/1821), Z(AV0Z20410507)
http://linked.open...iv/cisloPeriodika	14
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Chlup, Zdeněk Dlouhý, Ivo
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky materiálů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	189160
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/11:00359267
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	fracture toughness; carbon nanotube; silica glass (en)
http://linked.open.../riv/klicoveSlovo	carbon nanotube fracture toughness silica glass
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[78ECAEC81F4E]
http://linked.open...i/riv/nazevZdroje	Journal of Materials Science
http://linked.open...in/vavai/riv/obor	JL
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Mechanical and fracture properties of multilayered ceramic/ceramic and ceramic/metal materials with graded layers
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	46
http://linked.open...iv/tvurceVysledku	Boccaccini, A. R. Chlup, Zdeněk Chao, J. Dlouhý, Ivo Inam, F. Reece, M. J. Shaffer, M.S.P.
http://linked.open...ain/vavai/riv/wos	000289903200005
http://linked.open...n/vavai/riv/zamer	Physical properties of advanced materials in relation to their microstructure and processing
issn	0022-2461
number of pages	10 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s10853-011-5387-x

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