Detail publikace
Crack path prediction in layered ceramics designed with residual stresses.
ŠEVEČEK, O. BERMEJO, R. KOTOUL, M.
Český název
Crack path prediction in layered ceramics designed with residual stresses.
Anglický název
Crack path prediction in layered ceramics designed with residual stresses.
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
en
Originální abstrakt
In this work a computational tool, aiming to predict the crack propagation (i.e. straight propagation, single deflection or bifurcation) on layered ceramics designed with internal residual stresses, is developed. They consist of two material layers with different properties, alternated in a multilayer structure. The internal stresses developed during sintering are associated with the volume ratio of both materials, i.e. V1/V2. The computational model is based on Finite Fracture Mechanics theory, especially focused on cracks terminating at the interface of the two different material layers. The method utilizes a matched asymptotic procedure to derive the change of potential energy associated with the fracture process. A combined loading (thermal and mechanical) is taken into consideration to clarify the influence of the residual stresses on the crack path during fracture. The crack paths predicted by the model are compared and discussed with experimental observations on layered ceramics designed with residual stresses.
Český abstrakt
In this work a computational tool, aiming to predict the crack propagation (i.e. straight propagation, single deflection or bifurcation) on layered ceramics designed with internal residual stresses, is developed. They consist of two material layers with different properties, alternated in a multilayer structure. The internal stresses developed during sintering are associated with the volume ratio of both materials, i.e. V1/V2. The computational model is based on Finite Fracture Mechanics theory, especially focused on cracks terminating at the interface of the two different material layers. The method utilizes a matched asymptotic procedure to derive the change of potential energy associated with the fracture process. A combined loading (thermal and mechanical) is taken into consideration to clarify the influence of the residual stresses on the crack path during fracture. The crack paths predicted by the model are compared and discussed with experimental observations on layered ceramics designed with residual stresses.
Anglický abstrakt
In this work a computational tool, aiming to predict the crack propagation (i.e. straight propagation, single deflection or bifurcation) on layered ceramics designed with internal residual stresses, is developed. They consist of two material layers with different properties, alternated in a multilayer structure. The internal stresses developed during sintering are associated with the volume ratio of both materials, i.e. V1/V2. The computational model is based on Finite Fracture Mechanics theory, especially focused on cracks terminating at the interface of the two different material layers. The method utilizes a matched asymptotic procedure to derive the change of potential energy associated with the fracture process. A combined loading (thermal and mechanical) is taken into consideration to clarify the influence of the residual stresses on the crack path during fracture. The crack paths predicted by the model are compared and discussed with experimental observations on layered ceramics designed with residual stresses.
Klíčová slova česky
ceramic laminates, crack propagation prediction, residual stresses, finite element method
Klíčová slova anglicky
ceramic laminates, crack propagation prediction, residual stresses, finite element method
Rok RIV
2012
Vydáno
19.09.2012
ISBN
9788895940441
Kniha
Proceedings of the 4th International Conference on CRACK PATHS (CP 2012)
Číslo edice
1
Strany od–do
87–98
Počet stran
10
BIBTEX
@inproceedings{BUT94600,
author="Oldřich {Ševeček} and Raul {Bermejo} and Michal {Kotoul},
title="Crack path prediction in layered ceramics designed with residual stresses.",
booktitle="Proceedings of the 4th International Conference on CRACK PATHS (CP 2012)",
year="2012",
month="September",
pages="87--98",
isbn="9788895940441"
}