Detail publikace
Application of the coupled stress-energy criterion to predict the fracture behaviour of layered ceramics designed with internal compressive stresses
LEGUILLON, D. MARTIN, É. ŠEVEČEK, O. BERMEJO, R.
Český název
Application of the coupled stress-energy criterion to predict the fracture behaviour of layered ceramics designed with internal compressive stresses
Anglický název
Application of the coupled stress-energy criterion to predict the fracture behaviour of layered ceramics designed with internal compressive stresses
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
In this work, a coupled stress-energy criterion is used to predict the initiation and propagation of surface cracks in ceramic laminates upon thermo-mechanical loading. Experiments were conducted on V-notched alumina-based laminates to show the effect of residual stresses and mechanical loading on their fracture behaviour. The conditions for crack initiation as predicted for notched specimens agreed with the experimental observations. It is shown that the onset of cracks from V-notches is associated with (i) the tensile residual stresses in the first surface layer and (ii) the depth of the notch. The further propagation of the crack into the first embedded compressive layer was also studied. Based upon the coupled criterion, a short penetration of the propagating crack into the first compressive is foreseen. If the mechanical load is increased, the crack finally deflects within the compressive layer propagating with a certain angle which is also predicted with a good accuracy.
Český abstrakt
In this work, a coupled stress-energy criterion is used to predict the initiation and propagation of surface cracks in ceramic laminates upon thermo-mechanical loading. Experiments were conducted on V-notched alumina-based laminates to show the effect of residual stresses and mechanical loading on their fracture behaviour. The conditions for crack initiation as predicted for notched specimens agreed with the experimental observations. It is shown that the onset of cracks from V-notches is associated with (i) the tensile residual stresses in the first surface layer and (ii) the depth of the notch. The further propagation of the crack into the first embedded compressive layer was also studied. Based upon the coupled criterion, a short penetration of the propagating crack into the first compressive is foreseen. If the mechanical load is increased, the crack finally deflects within the compressive layer propagating with a certain angle which is also predicted with a good accuracy.
Anglický abstrakt
In this work, a coupled stress-energy criterion is used to predict the initiation and propagation of surface cracks in ceramic laminates upon thermo-mechanical loading. Experiments were conducted on V-notched alumina-based laminates to show the effect of residual stresses and mechanical loading on their fracture behaviour. The conditions for crack initiation as predicted for notched specimens agreed with the experimental observations. It is shown that the onset of cracks from V-notches is associated with (i) the tensile residual stresses in the first surface layer and (ii) the depth of the notch. The further propagation of the crack into the first embedded compressive layer was also studied. Based upon the coupled criterion, a short penetration of the propagating crack into the first compressive is foreseen. If the mechanical load is increased, the crack finally deflects within the compressive layer propagating with a certain angle which is also predicted with a good accuracy.
Klíčová slova česky
Layered ceramics, Residual stresses, Crack initiation
Klíčová slova anglicky
Layered ceramics, Residual stresses, Crack initiation
Rok RIV
2015
Vydáno
01.12.2015
Nakladatel
Elsevier
Místo
Francie
ISSN
0997-7538
Ročník
2015
Číslo
54
Strany od–do
94–104
Počet stran
11
BIBTEX
@article{BUT115339,
author="Dominique {Leguillon} and Éric {Martin} and Oldřich {Ševeček} and Raul {Bermejo},
title="Application of the coupled stress-energy criterion to predict the fracture behaviour of layered ceramics designed with internal compressive stresses",
year="2015",
volume="2015",
number="54",
month="December",
pages="94--104",
publisher="Elsevier",
address="Francie",
issn="0997-7538"
}