Detail publikačního výsledku

Effective Stress Intensity Factor for Crack of Intergranular Morphology

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

Originální název

Effective Stress Intensity Factor for Crack of Intergranular Morphology

Anglický název

Effective Stress Intensity Factor for Crack of Intergranular Morphology

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova v angličtině

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

Autoři

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

Vydáno

27.06.2001

Nakladatel

Vutium

Místo

Brno

ISBN

80-214-1892-3

Kniha

Materials Structure & Micromechanics of Fracture (MSMF-3)

Strany od

737

Strany počet

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"
}