Publication detail

Prediction of edge and tunnelling crack formation in layered ceramics using a stress-energy fracture criterion

PAPŠÍK, R. ŠEVEČEK, O. HOFER, A. KRALEVA, I. KREITH, J. BERMEJO, R.

Original Title

Prediction of edge and tunnelling crack formation in layered ceramics using a stress-energy fracture criterion

Type

journal article in Web of Science

Language

English

Original Abstract

A coupled stress-energy criterion is utilized to predict initiation of both edge and tunnelling cracks in layered ceramics containing thermal residual stresses. Edge (surface) cracks may originate in layers having high compressive in-plane stresses while tunnelling (internal) cracks may form in layers with high tensile in-plane stresses. This work investigates the influence of both the residual stresses magnitude and layer thickness on the formation of surface cracks and provides a design map defining safe regions where no cracks will be present in the sintered multilayer architecture upon reaching the room temperature. Necessary stress and energy inputs to evaluate the coupled criterion are calculated using the finite element method. Simulation results are validated with experimental observations on sample architectures fabricated with layers of various thicknesses and in -plane thermal residual stresses. The good agreement demonstrates the potential of the stress-energy coupled criterion for designing crack-free multi-layered ceramic architectures.

Keywords

Layered ceramics; Coupled criterion; Finite fracture mechanics; Residual stresses; Edge cracks; Tunnelling cracks

Authors

PAPŠÍK, R.; ŠEVEČEK, O.; HOFER, A.; KRALEVA, I.; KREITH, J.; BERMEJO, R.

Released

1. 7. 2023

Publisher

ELSEVIER SCI LTD

Location

OXFORD

ISBN

0955-2219

Periodical

Journal of the European Ceramic Society

Year of study

43

Number

7

State

United Kingdom of Great Britain and Northern Ireland

Pages from

2928

Pages to

2934

Pages count

7

URL

https://www.sciencedirect.com/science/article/pii/S0955221922009839?via%3Dihub

Full text in the Digital Library

http://hdl.handle.net/11012/213616

BibTex

@article{BUT183390,
  author="Roman {Papšík} and Oldřich {Ševeček} and Anna-Katherina {Hofer} and Irina {Kraleva} and Josef {Kreith} and Raul {Bermejo}",
  title="Prediction of edge and tunnelling crack formation in layered ceramics using a stress-energy fracture criterion",
  journal="Journal of the European Ceramic Society",
  year="2023",
  volume="43",
  number="7",
  pages="2928--2934",
  doi="10.1016/j.jeurceramsoc.2022.12.022",
  issn="0955-2219",
  url="https://www.sciencedirect.com/science/article/pii/S0955221922009839?via%3Dihub"
}