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Statements

Subject Item
n2:RIV%2F00216305%3A26210%2F05%3APU54746%21RIV06-GA0-26210___
rdf:type
skos:Concept n21:Vysledek
dcterms:description
Je vyšetřován problém interakce kolineárních trhlin a inkluzí v křehké matrici. Problém je řešen pomocí techniky spojitě rozložených dislokací. Součinitel intenzity napětí je vypočten pro různá uspořádání mikrotrhlin a inkluzí a pro různé kombinace elastických konstant. Podrobně je zkoumán vliv teplotních napětí. Je diskutováno tunelování periodicky rozmístěných mikrotrhlin v lamelách kompositu orientovaných pod uhlem 90° vzhledem ke směru vnějšího tahového zatížení. Je stanovena velikost hnací síly Gsss pro stacionární stav tunelujících mikrotrhlin. There is investigated a crack problem for an array of collinear microcracks in composite matrix. Inclusions are situated in between the neighbouring microcracks tips and exhibit different elastic properties than matrix. The problem is solved using the technique of distributed dislocations. Stress intensity factor is calculated for various cracks/inclusions geometries and elastic moduli mismatches. The process by which a fibre-reinforced cross-ply ceramic composite is damaged and eventually fails under ttension is very complex. After an initial elastic response, the damage starts with matrix cracking in 90° plies. These microcracks spread as 3D tunnelling cracks from small flaws located in the matrix of the 90° plies. Driving force for steady-state tunnelling, Gss, can be calculated using plane-strain elasticity solutions for the energy release rate G at the edge of plane-strain crack. There is investigated a crack problem for an array of collinear microcracks in composite matrix. Inclusions are situated in between the neighbouring microcracks tips and exhibit different elastic properties than matrix. The problem is solved using the technique of distributed dislocations. Stress intensity factor is calculated for various cracks/inclusions geometries and elastic moduli mismatches. The process by which a fibre-reinforced cross-ply ceramic composite is damaged and eventually fails under ttension is very complex. After an initial elastic response, the damage starts with matrix cracking in 90° plies. These microcracks spread as 3D tunnelling cracks from small flaws located in the matrix of the 90° plies. Driving force for steady-state tunnelling, Gss, can be calculated using plane-strain elasticity solutions for the energy release rate G at the edge of plane-strain crack.
dcterms:title
Vliv rozdílné teplotní roztažnosti vláken a matrice na porušení kompozitů tvořených křehkou matricí. Effect of thermal expansion mismatches of matrix and fibres on microcracking of brittle matrix composites Effect of thermal expansion mismatches of matrix and fibres on microcracking of brittle matrix composites
skos:prefLabel
Effect of thermal expansion mismatches of matrix and fibres on microcracking of brittle matrix composites Effect of thermal expansion mismatches of matrix and fibres on microcracking of brittle matrix composites Vliv rozdílné teplotní roztažnosti vláken a matrice na porušení kompozitů tvořených křehkou matricí.
skos:notation
RIV/00216305:26210/05:PU54746!RIV06-GA0-26210___
n3:strany
85-86
n3:aktivita
n20:P
n3:aktivity
P(GP101/05/P290)
n3:dodaniDat
n6:2006
n3:domaciTvurceVysledku
n4:2510944 n4:1512501
n3:druhVysledku
n5:D
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
519491
n3:idVysledku
RIV/00216305:26210/05:PU54746
n3:jazykVysledku
n7:eng
n3:klicovaSlova
particle composites; continuously distributed dislocations; cracks-inclusions interactions, thermal expansion; crack tunnelling
n3:klicoveSlovo
n14:continuously%20distributed%20dislocations n14:cracks-inclusions%20interactions n14:thermal%20expansion n14:particle%20composites n14:crack%20tunnelling
n3:kontrolniKodProRIV
[EFC696ED02D4]
n3:mistoKonaniAkce
Hrotovice
n3:mistoVydani
Brno
n3:nazevZdroje
Aplikovaná mechanika 2005
n3:obor
n18:JI
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n13:GP101%2F05%2FP290
n3:rokUplatneniVysledku
n6:2005
n3:tvurceVysledku
Kotoul, Michal Profant, Tomáš
n3:typAkce
n9:EUR
n3:zahajeniAkce
2005-03-29+02:00
s:numberOfPages
2
n19:hasPublisher
Vysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav mechaniky těles, mechatroniky a biomechaniky
n12:isbn
80-214-2373-0
n11:organizacniJednotka
26210