About: The effect of critical distance in stability condition for the crack at the interface between two materials

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About: The effect of critical distance in stability condition for the crack at the interface between two materials Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The aim of this work is to study the behaviour of a crack with its tip at the interface between two polymer materials. A numerical model of a cracked bi-material tension specimen is investigated and different stability criteria are tested. The stability criterion of a general stress concentrator usually needs a relation between the critical value of the generalized stress intensity factor (HIC) and critical value of the stress intensity factor KIC (fracture toughness). This relation is a function of the elastic mismatch of particular materials; the fracture toughness of the main material and the critical distance d ahead of the stress concentrator, where the criterion is applied. Estimation of distance d is usually not straightforward and different authors use different approaches for its determination. Therefore the main aim of this study is the mutual comparison of published approaches for d estimation and to quantify the influence of d choice on the critical load value. The results obtained can lead to a Berger residual lifetime prediction and safer design of layered structures. The aim of this work is to study the behaviour of a crack with its tip at the interface between two polymer materials. A numerical model of a cracked bi-material tension specimen is investigated and different stability criteria are tested. The stability criterion of a general stress concentrator usually needs a relation between the critical value of the generalized stress intensity factor (HIC) and critical value of the stress intensity factor KIC (fracture toughness). This relation is a function of the elastic mismatch of particular materials; the fracture toughness of the main material and the critical distance d ahead of the stress concentrator, where the criterion is applied. Estimation of distance d is usually not straightforward and different authors use different approaches for its determination. Therefore the main aim of this study is the mutual comparison of published approaches for d estimation and to quantify the influence of d choice on the critical load value. The results obtained can lead to a Berger residual lifetime prediction and safer design of layered structures. (en)
Title	The effect of critical distance in stability condition for the crack at the interface between two materials The effect of critical distance in stability condition for the crack at the interface between two materials (en)
skos:prefLabel	The effect of critical distance in stability condition for the crack at the interface between two materials The effect of critical distance in stability condition for the crack at the interface between two materials (en)
skos:notation	RIV/68081723:_____/12:00385515!RIV13-GA0-68081723
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP107/10/0361), P(GAP108/12/1560)
http://linked.open...iv/cisloPeriodika	2/3
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Knésl, Zdeněk Náhlík, Luboš Hutař, Pavel Ševčík, Martin Zouhar, Michal
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	132984
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/12:00385515
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	stability criterion; critical distance; bi-material interface (en)
http://linked.open.../riv/klicoveSlovo	critical distance stability criterion bi-material interface
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[EAAFCCF9BD0D]
http://linked.open...i/riv/nazevZdroje	Engineering Mechanics
http://linked.open...in/vavai/riv/obor	JL
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Description of the slow crack growth in polymer materials under complex loading conditions Microstructural Design of Engineering Materials with High Toughness
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	19
http://linked.open...iv/tvurceVysledku	Hutař, Pavel Knésl, Zdeněk Náhlík, Luboš Zouhar, Michal Ševčík, Martin
issn	1802-1484
number of pages	10 (xsd:int)

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