Publication result detail

Crack bridging and trapping in borosilicate matrix composites with distributed metal particles

KOTOUL, M., DLOUHÝ, I., VYSLOUŽIL, T.

Original Title

Crack bridging and trapping in borosilicate matrix composites with distributed metal particles

English Title

Crack bridging and trapping in borosilicate matrix composites with distributed metal particles

Type

Paper in proceedings (conference paper)

Original Abstract

One of the most efficient ways to improve the fracture toughness of ceramics is to reinforce them by large volume fraction of bonded metal particles The toughening effect of the metal particles was attributed to both crack trapping and bridging. While the bridging effect has been relatively well documented, the crack trapping effect is still somewhat inadequately understood. In contrast to crack bridging, the effectiveness of crack trapping increases with the debonding toughness of the particle/matrix interface. When the tough heterogeneities are equiaxed particles, adhesive strength becomes a very critical issue. Specifically, some optimum interface debonding is needed to remove the geometric constraint and allow the particles to deform plastically in a significant part of their volume. The aim of the contribution is to confront the measured fracture toughness values obtained on borosilicate glass matrix composites with theoretical predictions.

English abstract

One of the most efficient ways to improve the fracture toughness of ceramics is to reinforce them by large volume fraction of bonded metal particles The toughening effect of the metal particles was attributed to both crack trapping and bridging. While the bridging effect has been relatively well documented, the crack trapping effect is still somewhat inadequately understood. In contrast to crack bridging, the effectiveness of crack trapping increases with the debonding toughness of the particle/matrix interface. When the tough heterogeneities are equiaxed particles, adhesive strength becomes a very critical issue. Specifically, some optimum interface debonding is needed to remove the geometric constraint and allow the particles to deform plastically in a significant part of their volume. The aim of the contribution is to confront the measured fracture toughness values obtained on borosilicate glass matrix composites with theoretical predictions.

Keywords

brittle matrix composites, crack bridging, crack trapping, toughening mechanisms.

Key words in English

brittle matrix composites, crack bridging, crack trapping, toughening mechanisms.

Authors

KOTOUL, M., DLOUHÝ, I., VYSLOUŽIL, T.

RIV year

2011

Released

01.01.2004

Location

Stockholm

Book

ECF15

Pages from

185

Pages count

9

BibTex

@inproceedings{BUT17037,
  author="Michal {Kotoul} and Ivo {Dlouhý} and Tomáš {Vysloužil}",
  title="Crack bridging and trapping in borosilicate matrix composites with distributed metal particles",
  booktitle="ECF15",
  year="2004",
  pages="9",
  address="Stockholm"
}