Publication detail

Crack path prediction in layered ceramics designed with residual stresses.

ŠEVEČEK, O. BERMEJO, R. KOTOUL, M.

Original Title

Crack path prediction in layered ceramics designed with residual stresses.

Type

conference paper

Language

English

Original Abstract

In this work a computational tool, aiming to predict the crack propagation (i.e. straight propagation, single deflection or bifurcation) on layered ceramics designed with internal residual stresses, is developed. They consist of two material layers with different properties, alternated in a multilayer structure. The internal stresses developed during sintering are associated with the volume ratio of both materials, i.e. V1/V2. The computational model is based on Finite Fracture Mechanics theory, especially focused on cracks terminating at the interface of the two different material layers. The method utilizes a matched asymptotic procedure to derive the change of potential energy associated with the fracture process. A combined loading (thermal and mechanical) is taken into consideration to clarify the influence of the residual stresses on the crack path during fracture. The crack paths predicted by the model are compared and discussed with experimental observations on layered ceramics designed with residual stresses.

Keywords

ceramic laminates, crack propagation prediction, residual stresses, finite element method

Key words in English

ceramic laminates, crack propagation prediction, residual stresses, finite element method

Authors

ŠEVEČEK, O.; BERMEJO, R.; KOTOUL, M.

RIV year

2012

Released

19. 9. 2012

ISBN

9788895940441

Book

Proceedings of the 4th International Conference on CRACK PATHS (CP 2012)

Edition number

1

Pages from

87

Pages to

98

Pages count

10

BibTex

@inproceedings{BUT94600,
  author="Oldřich {Ševeček} and Raul {Bermejo} and Michal {Kotoul}",
  title="Crack path prediction in layered ceramics designed with residual stresses.",
  booktitle="Proceedings of the 4th International Conference on CRACK PATHS (CP 2012)",
  year="2012",
  number="1",
  pages="87--98",
  isbn="9788895940441"
}