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HORNÍKOVÁ, J. ŠANDERA, P. POKLUDA, J.
Original Title
On the Crack Tip Shielding in Particle Reinforced Composites
Type
journal article - other
Language
English
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.
Keywords
metallic inclusions, toughening effect, stress intensity factor, crack tip shielding
Authors
HORNÍKOVÁ, J.; ŠANDERA, P.; POKLUDA, J.
RIV year
2005
Released
1. 1. 2005
ISBN
0255-5476
Periodical
Materials Science Forum
Year of study
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" }