Publication detail

Effective Stress Intensity Factor for Crack of Intergranular Morphology

HORNÍKOVÁ, J., ŠANDERA, P., POKLUDA, J.

Original Title

Effective Stress Intensity Factor for Crack of Intergranular Morphology

Type

conference paper

Language

English

Original Abstract

The microtortuosity of the crack front induces a local mixed mode 1+2+3 even in case of the remote mode I loading. It causes a shielding effect not taken into account in standard procedures for evaluation of fracture characteristics. The main aim of this work is to perform a 3D BEM analysis of the elastic stress-strain field at the front of real-like intergranular cracks. Results of this analysis are evaluated in terms of the integral effective stress intensity factor keff related to the intergranular crack front. Quantitative estimation of the corresponding shielding level can be used for correcting values of fracture toughness in order to get intrinsic component characterising well the real resistance of grain boundaries against the unstable crack growth initiation.

Key words in English

Effective stress intensity factor, intergranular crack front, shielding effect, ultra high strength steels, boundary element method, CT specimen.

Authors

HORNÍKOVÁ, J., ŠANDERA, P., POKLUDA, J.

RIV year

2001

Released

27. 6. 2001

Publisher

Vutium

Location

Brno

ISBN

80-214-1892-3

Book

Materials Structure & Micromechanics of Fracture (MSMF-3)

Pages from

737

Pages to

745

Pages count

9

BibTex

@inproceedings{BUT2821,
  author="Jana {Horníková} and Pavel {Šandera} and Jaroslav {Pokluda}",
  title="Effective Stress Intensity Factor for Crack of Intergranular Morphology",
  booktitle="Materials Structure & Micromechanics of Fracture (MSMF-3)",
  year="2001",
  pages="9",
  publisher="Vutium",
  address="Brno",
  isbn="80-214-1892-3"
}