Publication detail
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.
Czech title
Application of the coupled stress-energy criterion to predict the fracture behaviour of layered ceramics designed with internal compressive stresses
English title
Application of the coupled stress-energy criterion to predict the fracture behaviour of layered ceramics designed with internal compressive stresses
Type
journal article in Web of Science
Language
en
Original abstract
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.
Czech abstract
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.
English abstract
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.
Keywords in Czech
Layered ceramics, Residual stresses, Crack initiation
Keywords in English
Layered ceramics, Residual stresses, Crack initiation
RIV year
2015
Released
01.12.2015
Publisher
Elsevier
Location
Francie
ISSN
0997-7538
Volume
2015
Number
54
Pages from–to
94–104
Pages count
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"
}