About: Reliability of the Chevron-notch technique for fracture toughness determination in glass.

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About: Reliability of the Chevron-notch technique for fracture toughness determination in glass. Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The applicability of the chevron-notch (CN) three-point bending test for determining the fracture toughness (KIc) of borosilicate glass was studied. As-received specimens with straight sharp notch were also tested in three-point bending for comparison purposes. It was found that both chevron and straight notched specimen geometries were equally suitable for the determination of fracture toughness in terms of average values and data variability according to Weibull and Student's t -statistics. Further testing with CN geometry showed that annealing of specimens at a temperature (550 8C) higher than the glass transformation temperature led to a lower value of KIc. The difference in mean fracture toughness values (0.75 and 0.64 MPam1/2 before and after annealing, respectively), was ascribed to the different level of compressive residual stresses in the samples. The Student's t -test was applied to confirm the statistical significance of the different KIc values measured. These results demonstrate that t The applicability of the chevron-notch (CN) three-point bending test for determining the fracture toughness (KIc) of borosilicate glass was studied. As-received specimens with straight sharp notch were also tested in three-point bending for comparison purposes. It was found that both chevron and straight notched specimen geometries were equally suitable for the determination of fracture toughness in terms of average values and data variability according to Weibull and Student's t -statistics. Further testing with CN geometry showed that annealing of specimens at a temperature (550 8C) higher than the glass transformation temperature led to a lower value of KIc. The difference in mean fracture toughness values (0.75 and 0.64 MPam1/2 before and after annealing, respectively), was ascribed to the different level of compressive residual stresses in the samples. The Student's t -test was applied to confirm the statistical significance of the different KIc values measured. These results demonstrate that t (en)
Title	Reliability of the Chevron-notch technique for fracture toughness determination in glass. Reliability of the Chevron-notch technique for fracture toughness determination in glass. (en)
skos:prefLabel	Reliability of the Chevron-notch technique for fracture toughness determination in glass. Reliability of the Chevron-notch technique for fracture toughness determination in glass. (en)
skos:notation	RIV/68081723:_____/03:07033010!RIV/2004/AV0/A07004/N
http://linked.open.../vavai/riv/strany	102;108
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA2041003), Z(AV0Z2041904)
http://linked.open...iv/cisloPeriodika	1/2
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	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	625227
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/03:07033010
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Fracture toughness; Glass; Chevron-notch technique (en)
http://linked.open.../riv/klicoveSlovo	Fracture toughness Glass Chevron-notch technique
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[693AAE1786E8]
http://linked.open...i/riv/nazevZdroje	Materials Science and Engineering A. Elsevier
http://linked.open...in/vavai/riv/obor	JH
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Brittle fracture micromechanics and toughness scaling models
http://linked.open...UplatneniVysledku	2003
http://linked.open...v/svazekPeriodika	347
http://linked.open...iv/tvurceVysledku	Boccaccini, A. R. Dlouhý, Ivo Rawlings, R. D.
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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