Publication detail

Determination of crack propagation direction using approach based on generalized linear elastic fracture

NÁHLÍK, L. HUTAŘ, P. ŠEVČÍK, M. MALÍKOVÁ, L.

Original Title

Determination of crack propagation direction using approach based on generalized linear elastic fracture

Type

conference paper

Language

English

Original Abstract

The objective of the paper is to investigate the direction of a further crack propagation from the interface between two elastic materials. The angle of crack propagation changes when the crack passes the interface, due to different material properties of layers. The suggested procedure makes it possible to estimate an angle of crack propagation under which the crack will propagate into the second material. The assumptions of (generalized) linear elastic fracture mechanics, which takes into account stress singularity exponent different from 1/2 are considered. The finite element method was used for numerical calculations. As an example application of the suggested approach on crack propagation through laminar ceramics (residual stresses in individual layers are taken into account) is introduced and results obtained compared with experimental data. The results obtained might contribute to a better understanding of the failure of materials with interfaces (e.g. layered composites, materials with protective coatings) and to a more reliable estimation of the service life of such structures.

Keywords

crack propagation, generalized stress intensity factor, numerical simulation

Authors

NÁHLÍK, L.; HUTAŘ, P.; ŠEVČÍK, M.; MALÍKOVÁ, L.

RIV year

2012

Released

19. 9. 2012

ISBN

9788895940441

Book

The 4th International Conference on Crack Paths (CP2012)

Pages from

1065

Pages to

1072

Pages count

8

BibTex

@inproceedings{BUT97124,
  author="Luboš {Náhlík} and Pavel {Hutař} and Martin {Ševčík} and Lucie {Malíková}",
  title="Determination of crack propagation direction using approach based on generalized linear elastic fracture",
  booktitle="The 4th International Conference on Crack Paths (CP2012)",
  year="2012",
  pages="1065--1072",
  isbn="9788895940441"
}