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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F04%3A07033154%21RIV%2F2004%2FAV0%2FA07004%2FN
rdf:type
n17:Vysledek skos:Concept
dcterms: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.
dcterms: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.
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.
skos:notation
RIV/68081723:_____/04:07033154!RIV/2004/AV0/A07004/N
n4:strany
17;23
n4:aktivita
n11:P n11:Z
n4:aktivity
P(IAA2041003), P(ME 491), Z(AV0Z2041904)
n4:cisloPeriodika
367
n4:dodaniDat
n9:2004
n4:domaciTvurceVysledku
n12:8162840 n12:5798574
n4:druhVysledku
n8:J
n4:duvernostUdaju
n16:S
n4:entitaPredkladatele
n14:predkladatel
n4:idSjednocenehoVysledku
562030
n4:idVysledku
RIV/68081723:_____/04:07033154
n4:jazykVysledku
n5:eng
n4:klicovaSlova
Nicalon fibre; glass matrix composite; fracture toughness
n4:klicoveSlovo
n15:fracture%20toughness n15:glass%20matrix%20composite n15:Nicalon%20fibre
n4:kodStatuVydavatele
NL - Nizozemsko
n4:kontrolniKodProRIV
[E07E80DE5382]
n4:nazevZdroje
Materials Scienes and Engineering A
n4:obor
n18:JL
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
6
n4:pocetUcastnikuAkce
0
n4:pocetZahranicnichUcastnikuAkce
0
n4:projekt
n7:IAA2041003 n7:ME%20491
n4:rokUplatneniVysledku
n9:2004
n4:svazekPeriodika
N/A
n4:tvurceVysledku
Chawla, K. K. Koopman, M. Boccaccini, A. R. Kulkarmi, R. Dlouhý, Ivo Chlup, Zdeněk
n4:zamer
n13:AV0Z2041904
s:issn
0921-5093
s:numberOfPages
7