Publication detail
Prediction of thermal shock induced cracking in multi-material ceramics using a stress-energy criterion
PAPŠÍK, R. ŠEVEČEK, O. SCHLACHER, J. BERMEJO, R.
English title
Prediction of thermal shock induced cracking in multi-material ceramics using a stress-energy criterion
Type
journal article in Web of Science
Language
en
Original abstract
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.
English abstract
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.
Keywords in English
Thermal shock; Ceramics; Alumina; Multi-material; Coupled criterion; Finite fracture mechanic
Released
05.06.2024
Publisher
Elsevier
Location
England
ISSN
0013-7944
Volume
303
Number
June
Pages from–to
1–11
Pages count
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"
}