Detail publikačního výsledku

On the Crack Tip Shielding in Particle Reinforced Composites

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

Originální název

On the Crack Tip Shielding in Particle Reinforced Composites

Anglický název

On the Crack Tip Shielding in Particle Reinforced Composites

Druh

Článek recenzovaný mimo WoS a Scopus

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Vydáno

01.01.2005

ISSN

0255-5476

Periodikum

Materials Science Forum

Svazek

482

Stát

Švýcarská konfederace

Strany od

311

Strany do

314

Strany počet

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"
}