Detail publikace
Assessment of crack-related problems in layered ceramics using the finite fracture mechanics and coupled stress-energy criterion
ŠEVEČEK, O. KOTOUL, M. LEGUILLON, D. MARTIN, É. BERMEJO, R.
Anglický název
Assessment of crack-related problems in layered ceramics using the finite fracture mechanics and coupled stress-energy criterion
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
en
Originální abstrakt
This contribution gives an overview of different fracture-mechanics issues occurring in layered ceramics designed with internal compressive residual stresses (such as the edge cracking, crack arrest by the compressive layer or crack deflection/bifurcation) and proposes an effective approach to describe the initiation and/or propagation of cracks in such materials. The finite fracture mechanics (FFM) theory and the coupled stress-energy criterion (CC) are discussed and applied to understand their fracture behavior. A case study is investigated, where edge cracking in compressive layers can be predicted as a function of the thickness of the compressive layer and the magnitude of residual stresses. Another case study concerns the onset of a crack in a notched sample of a layered ceramic submitted to bending. The propagation of the crack through the ceramic laminate is studied as a function of the volume ratio of particular material components and corresponding magnitude of residual stresses in both compressive and tensile layers. Under certain combination of residual stress and layered architecture, the CC predicts crack arrest in the internal compressive layer of the laminate in accordance with experimental observations under similar loading conditions.
Anglický abstrakt
This contribution gives an overview of different fracture-mechanics issues occurring in layered ceramics designed with internal compressive residual stresses (such as the edge cracking, crack arrest by the compressive layer or crack deflection/bifurcation) and proposes an effective approach to describe the initiation and/or propagation of cracks in such materials. The finite fracture mechanics (FFM) theory and the coupled stress-energy criterion (CC) are discussed and applied to understand their fracture behavior. A case study is investigated, where edge cracking in compressive layers can be predicted as a function of the thickness of the compressive layer and the magnitude of residual stresses. Another case study concerns the onset of a crack in a notched sample of a layered ceramic submitted to bending. The propagation of the crack through the ceramic laminate is studied as a function of the volume ratio of particular material components and corresponding magnitude of residual stresses in both compressive and tensile layers. Under certain combination of residual stress and layered architecture, the CC predicts crack arrest in the internal compressive layer of the laminate in accordance with experimental observations under similar loading conditions.
Klíčová slova anglicky
Layered ceramics; crack bifurcation; edge cracking; Finite Fracture Mechanics; Coupled Criterion
Vydáno
20.06.2016
Nakladatel
Elsevier
Místo
Itálie
ISSN
2452-3216
Kniha
Procedia Structural Integrity
Ročník
2
Číslo
1
Strany od–do
2014–2021
Počet stran
8
BIBTEX
@inproceedings{BUT129250,
author="Oldřich {Ševeček} and Michal {Kotoul} and Dominique {Leguillon} and Éric {Martin} and Raul {Bermejo},
title="Assessment of crack-related problems in layered ceramics using the finite fracture mechanics and coupled stress-energy criterion",
booktitle="Procedia Structural Integrity",
year="2016",
volume="2",
number="1",
month="June",
pages="2014--2021",
publisher="Elsevier",
address="Itálie",
issn="2452-3216"
}