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"
}