Publication detail
On the Crack Tip Shielding in Particle Reinforced Composites
HORNÍKOVÁ, J. ŠANDERA, P. POKLUDA, J. KOTOUL, M.
Czech title
O stínění špice trhliny v částicově zpevněných kompositech
English title
On the Crack Tip Shielding in Particle Reinforced Composites
Type
conference paper
Language
en
Original abstract
The paper is focused on crack-tip shielding effects 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. The increasing volume fraction of rigid particles causes a significant decrease in the Keff-value (shielding), while leaving the geometry of the crack practically unaffected. On the other hand, the holes produce shielding only above the critical diameter/spacing ratio (d/l)c = 1. This critical value is expected to be much lower when considering both the finite tilting and the trapping of the crack tip.
Czech abstract
O stínění špice trhliny v částicově zpevněných kompositech
English abstract
The paper is focused on crack-tip shielding effects 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. The increasing volume fraction of rigid particles causes a significant decrease in the Keff-value (shielding), while leaving the geometry of the crack practically unaffected. On the other hand, the holes produce shielding only above the critical diameter/spacing ratio (d/l)c = 1. This critical value is expected to be much lower when considering both the finite tilting and the trapping of the crack tip.
Keywords in English
crack-tip shielding effects, particle reinforced composites, effective stress intensity factor
RIV year
2005
Released
01.01.2005
Location
Mallorca, Spain
ISBN
0-9547783-1-6
Book
4th International Conference on Fracture and Damage Mechanics
Edition number
1
Pages from–to
509–512
Pages count
4
BIBTEX
@inproceedings{BUT16262,
author="Jana {Horníková} and Pavel {Šandera} and Jaroslav {Pokluda} and Michal {Kotoul},
title="On the Crack Tip Shielding in Particle Reinforced Composites",
booktitle="4th International Conference on Fracture and Damage Mechanics",
year="2005",
month="January",
pages="509--512",
address="Mallorca, Spain",
isbn="0-9547783-1-6"
}