About: Effect of static pre-loading on fracture toughness of Nicalon fibre glass matrix composite.

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About: Effect of static pre-loading on fracture toughness of Nicalon fibre glass matrix composite. Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Static fatigue of commercial available unidirectional SiC-fibre reinforced glass matrix composite has been followed by measuring fracture toughness of samples statically pre-loaded at different stresses and times. Pre-load levels were just below the loads corresponding to fracture strength, the (bending) pre-stress being on level 300, 310 and 315 MPa. Three hold times, 25, 50 and 75 h were applied at the stresses. For fracture toughness (KIc) determination a chevron-notch three-point bend test was applied. The method has been found to be the only way to accurately detect and quantify very subtle microdamage on fiber/matrix interfaces caused by static pre-stressing. Despite of the high scatter of the measured KIc values, a decrease in fracture toughness with increasing pre-stress and hold time has been found. A parameter enabling to quantify the cumulative and combined effect of pre-stress and hold time on fracture toughness of the composites has been proposed. Static fatigue of commercial available unidirectional SiC-fibre reinforced glass matrix composite has been followed by measuring fracture toughness of samples statically pre-loaded at different stresses and times. Pre-load levels were just below the loads corresponding to fracture strength, the (bending) pre-stress being on level 300, 310 and 315 MPa. Three hold times, 25, 50 and 75 h were applied at the stresses. For fracture toughness (KIc) determination a chevron-notch three-point bend test was applied. The method has been found to be the only way to accurately detect and quantify very subtle microdamage on fiber/matrix interfaces caused by static pre-stressing. Despite of the high scatter of the measured KIc values, a decrease in fracture toughness with increasing pre-stress and hold time has been found. A parameter enabling to quantify the cumulative and combined effect of pre-stress and hold time on fracture toughness of the composites has been proposed. (en)
Title	Effect of static pre-loading on fracture toughness of Nicalon fibre glass matrix composite. Effect of static pre-loading on fracture toughness of Nicalon fibre glass matrix composite. (en)
skos:prefLabel	Effect of static pre-loading on fracture toughness of Nicalon fibre glass matrix composite. Effect of static pre-loading on fracture toughness of Nicalon fibre glass matrix composite. (en)
skos:notation	RIV/68081723:_____/04:07033154!RIV/2004/AV0/A07004/N
http://linked.open.../vavai/riv/strany	17;23
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA2041003), P(ME 491), Z(AV0Z2041904)
http://linked.open...iv/cisloPeriodika	367
http://linked.open...vai/riv/dodaniDat	2004
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	562030
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/04:07033154
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Nicalon fibre; glass matrix composite; fracture toughness (en)
http://linked.open.../riv/klicoveSlovo	glass matrix composite Nicalon fibre fracture toughness
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[E07E80DE5382]
http://linked.open...i/riv/nazevZdroje	Materials Scienes and Engineering A
http://linked.open...in/vavai/riv/obor	JL
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	http://linked.opendata.cz/resource/domain/vavai/projekt/ME%20491 Brittle fracture micromechanics and toughness scaling models
http://linked.open...UplatneniVysledku	2004
http://linked.open...v/svazekPeriodika	N/A
http://linked.open...iv/tvurceVysledku	Boccaccini, A. R. Chlup, Zdeněk Dlouhý, Ivo Chawla, K. K. Koopman, M. Kulkarmi, R.
http://linked.open...n/vavai/riv/zamer	Behavior and properties of metallic and non-metallic materials in relation to their structure, research on processes leading to degradation of material quality
issn	0921-5093
number of pages	7 (xsd:int)

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