Prediction of thermal shock induced cracking in multi-material ceramics using a stress-energy criterion
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Date
2024-06-05
Authors
Papšík, Roman
Ševeček, Oldřich
Schlacher, Josef
Bermejo, Raul
ORCID
0000-0003-3442-2650Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
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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 (Tc) 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 Tc is predicted for multi-material ceramics with a thin alumina surface layer with compressive stresses, compared to bulk reference alumina.
Description
Citation
Engineering Fracture Mechanics. 2024, vol. 303, issue June, p. 1-11.
https://www.sciencedirect.com/science/article/pii/S0013794424002844
https://www.sciencedirect.com/science/article/pii/S0013794424002844
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en