Publication detail
Prediction of crack propagation in layered ceramics with strong interfaces
NÁHLÍK, L. ŠESTÁKOVÁ, L. HUTAŘ, P. BERMEJO, R.
Czech title
Predikce šíření trhliny ve vrstevnatých keramických materiálech s pevným rozhraním
English title
Prediction of crack propagation in layered ceramics with strong interfaces
Type
journal article - other
Language
en
Original abstract
The crack propagation under flexure in layered ceramics designed with strong interfaces and high compressive residual stresses is investigated by means of FE simulations and compared with experimental observations on alumina – zirconia multilayered ceramics. The change of crack propagation direction on the interface is assessed based on the strain energy density and maximum tangential stress criteria. The influence of the layer thickness on the crack propagation direction is evaluated. The estimated crack path (crack deflection angle) obtained through FE calculations is in agreement with the experimental observations. The results can be used for the design of layered ceramics with enhanced crack growth resistance.
Czech abstract
V práci je studováno šíření trhliny v keramickém laminátu Al2O3 – ZrO2. Je stanoven vliv tlouštěk jednotlivých vrstev na směr šíření trhliny za pomoci kriteria založeného na hustotě deformační energie a maximálního tangenciálního napětí. Predikované šíření trhliny je srovnáno s expertimentálními daty a je konstatována dobrá shoda. Uvedené postupy lze využít při návrhu vrstevnatých keramických laminátů.
English abstract
The crack propagation under flexure in layered ceramics designed with strong interfaces and high compressive residual stresses is investigated by means of FE simulations and compared with experimental observations on alumina – zirconia multilayered ceramics. The change of crack propagation direction on the interface is assessed based on the strain energy density and maximum tangential stress criteria. The influence of the layer thickness on the crack propagation direction is evaluated. The estimated crack path (crack deflection angle) obtained through FE calculations is in agreement with the experimental observations. The results can be used for the design of layered ceramics with enhanced crack growth resistance.
Keywords in Czech
Keramické lamináty; směr šíření trhliny, residuální napětí; keramika tolerantní k vadám; optimální návrh
Keywords in English
Ceramic laminate; Crack propagation direction; Residual stress; Flaw tolerant ceramics; Optimal design
RIV year
2010
Released
01.07.2010
Publisher
Elsevier
Location
Amsterdam
ISSN
0013-7944
Journal
Engineering Fracture Mechanics
Volume
77
Number
11
Pages from–to
2192–2199
Pages count
8
BIBTEX
@article{BUT49754,
author="Luboš {Náhlík} and Lucie {Malíková} and Pavel {Hutař} and Raul {Bermejo},
title="Prediction of crack propagation in layered ceramics with strong interfaces",
journal="Engineering Fracture Mechanics",
year="2010",
volume="77",
number="11",
month="July",
pages="2192--2199",
publisher="Elsevier",
address="Amsterdam",
issn="0013-7944"
}