Detail publikace

Ke stínění špice trhliny v částicově zpevněných kompositech

HORNÍKOVÁ, J. ŠANDERA, P. POKLUDA, J.

Český název

Ke stínění špice trhliny v částicově zpevněných kompositech

Anglický název

On the Crack Tip Shielding in Particle Reinforced Composites

Typ

článek v časopise - ostatní, Jost

Jazyk

en

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.

Český abstrakt

Ke stínění špice trhliny v částicově zpevněných kompositech

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 anglicky

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

Rok RIV

2005

Vydáno

01.01.2005

ISSN

0255-5476

Časopis

Materials Science Forum

Ročník

482

Strany od–do

311–314

Počet stran

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",
  month="January",
  pages="311--314",
  issn="0255-5476"
}