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"
}