Detail publikace
Prediction of thermal shock induced cracking in multi-material ceramics using a stress-energy criterion
PAPŠÍK, R. ŠEVEČEK, O. SCHLACHER, J. BERMEJO, R.
Anglický název
Prediction of thermal shock induced cracking in multi-material ceramics using a stress-energy criterion
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
Impact of residual stresses on the thermal shock resistance of alumina–zirconia multi-layer ceramics is investigated within the framework of finite fracture mechanics, using a stress-energy criterion. The critical temperature difference (ΔTc) for crack formation is strongly dependent on the magnitude of residual stress and the material’s strength. The predicted minimal spacing between cracks, critical time for crack initiation, and initial depth of the induced cracks are compared and discussed for different designs. An increase of up to ∼40 % in ΔTc is predicted for multi-material ceramics with a thin alumina surface layer with compressive stresses, compared to bulk reference alumina.
Anglický abstrakt
Impact of residual stresses on the thermal shock resistance of alumina–zirconia multi-layer ceramics is investigated within the framework of finite fracture mechanics, using a stress-energy criterion. The critical temperature difference (ΔTc) for crack formation is strongly dependent on the magnitude of residual stress and the material’s strength. The predicted minimal spacing between cracks, critical time for crack initiation, and initial depth of the induced cracks are compared and discussed for different designs. An increase of up to ∼40 % in ΔTc is predicted for multi-material ceramics with a thin alumina surface layer with compressive stresses, compared to bulk reference alumina.
Klíčová slova anglicky
Thermal shock; Ceramics; Alumina; Multi-material; Coupled criterion; Finite fracture mechanic
Vydáno
05.06.2024
Nakladatel
Elsevier
Místo
England
ISSN
0013-7944
Ročník
303
Číslo
June
Strany od–do
1–11
Počet stran
11
BIBTEX
@article{BUT188568,
author="Roman {Papšík} and Oldřich {Ševeček} and Josef {Schlacher} and Raul {Bermejo},
title="Prediction of thermal shock induced cracking in multi-material ceramics using a stress-energy criterion",
year="2024",
volume="303",
number="June",
month="June",
pages="1--11",
publisher="Elsevier",
address="England",
issn="0013-7944"
}