Publication detail
Influence of the T-stress on the crack bifurcation phenomenon in ceramic laminates
ŠEVEČEK, O. BERMEJO, R. PROFANT, T. KOTOUL, M.
Czech title
Influence of the T-stress on the crack bifurcation phenomenon in ceramic laminates
English title
Influence of the T-stress on the crack bifurcation phenomenon in ceramic laminates
Type
conference paper
Language
en
Original abstract
The influence of the compressive residual stresses and layer thickness in ceramic laminates on the presence of the crack bifurcation phenomenon is numerically investigated in this contribution. Using the fracture criterion, based on the Finite Fracture Mechanics, the angle and type of crack propagation (single crack deflection/bifurcation) within the layers with large compressive stresses is investigated. Laminates with various thicknesses of the compressive layer and constant level of the compressive residual stresses are used for this purpose. In these cases, the level of the T-stress (in the vicinity of the crack tip) can play a role as a second parameter in the fracture criterion (next to the stress intensity factor) and as a consequence can this term influence the predicted crack propagation behaviour.
Czech abstract
The influence of the compressive residual stresses and layer thickness in ceramic laminates on the presence of the crack bifurcation phenomenon is numerically investigated in this contribution. Using the fracture criterion, based on the Finite Fracture Mechanics, the angle and type of crack propagation (single crack deflection/bifurcation) within the layers with large compressive stresses is investigated. Laminates with various thicknesses of the compressive layer and constant level of the compressive residual stresses are used for this purpose. In these cases, the level of the T-stress (in the vicinity of the crack tip) can play a role as a second parameter in the fracture criterion (next to the stress intensity factor) and as a consequence can this term influence the predicted crack propagation behaviour.
English abstract
The influence of the compressive residual stresses and layer thickness in ceramic laminates on the presence of the crack bifurcation phenomenon is numerically investigated in this contribution. Using the fracture criterion, based on the Finite Fracture Mechanics, the angle and type of crack propagation (single crack deflection/bifurcation) within the layers with large compressive stresses is investigated. Laminates with various thicknesses of the compressive layer and constant level of the compressive residual stresses are used for this purpose. In these cases, the level of the T-stress (in the vicinity of the crack tip) can play a role as a second parameter in the fracture criterion (next to the stress intensity factor) and as a consequence can this term influence the predicted crack propagation behaviour.
Keywords in Czech
Ceramic laminates;T-stress; crack bifurcation; Finite Fracture Mechanics
Keywords in English
Ceramic laminates;T-stress; crack bifurcation; Finite Fracture Mechanics
RIV year
2014
Released
01.07.2014
Publisher
Elsevier
Location
Trondheim, Norsko
ISBN
9781632669094
ISSN
2211-8128
Book
20th European Conference on Fracture (ECF 2014)
Volume
3
Number
7
Edition number
1
Pages from–to
1062–1067
Pages count
6
BIBTEX
@inproceedings{BUT108414,
author="Oldřich {Ševeček} and Raul {Bermejo} and Tomáš {Profant} and Michal {Kotoul},
title="Influence of the T-stress on the crack bifurcation phenomenon in ceramic laminates",
booktitle="20th European Conference on Fracture (ECF 2014)",
year="2014",
volume="3",
number="7",
month="July",
pages="1062--1067",
publisher="Elsevier",
address="Trondheim, Norsko",
isbn="9781632669094",
issn="2211-8128"
}