Publication result detail

On the Crack Tip Shielding in Particle Reinforced Composites

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

Original Title

On the Crack Tip Shielding in Particle Reinforced Composites

English Title

On the Crack Tip Shielding in Particle Reinforced Composites

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

The paper is focused on crack-tip shielding effects caused by crack deflection (tilting) processes in particle reinforced composites. A numerical analysis by means of the ANSYS code was employed in order to assess these effects caused by rigid particles and holes in the matrix. As the first step, the effective stress intensity factor Keff was calculated for many crack tip positions in front, and in between, two particles of the same kind. In spite of a significant crack tip tilting, the spherical holes induce a slight increase in the Keff factor (anti-shielding). On the other hand, the rigid particles cause a significant decrease in the Keff-value (shielding), while leaving the crack practically unaffected. In the second step, the effect of particles in the wake of the crack tip will be analyzed in order to obtain a complex picture of shielding.

English abstract

The paper is focused on crack-tip shielding effects caused by crack deflection (tilting) processes in particle reinforced composites. A numerical analysis by means of the ANSYS code was employed in order to assess these effects caused by rigid particles and holes in the matrix. As the first step, the effective stress intensity factor Keff was calculated for many crack tip positions in front, and in between, two particles of the same kind. In spite of a significant crack tip tilting, the spherical holes induce a slight increase in the Keff factor (anti-shielding). On the other hand, the rigid particles cause a significant decrease in the Keff-value (shielding), while leaving the crack practically unaffected. In the second step, the effect of particles in the wake of the crack tip will be analyzed in order to obtain a complex picture of shielding.

Keywords

metallic inclusions, toughening effect, stress intensity factor, crack tip shielding

Key words in English

metallic inclusions, toughening effect, stress intensity factor, crack tip shielding

Authors

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

Released

01.01.2005

ISBN

0255-5476

Periodical

Materials Science Forum

Volume

482

State

Swiss Confederation

Pages from

311

Pages to

314

Pages count

4

BibTex

@article{BUT45572,
  author="Jana {Horníková} and Pavel {Šandera} and Jaroslav {Pokluda}",
  title="On the Crack Tip Shielding in Particle Reinforced Composites",
  journal="Materials Science Forum",
  year="2005",
  volume="482",
  number="0",
  pages="311--314",
  issn="0255-5476"
}