Publication result detail

Toughening effects quantification in glass matrix composite reinforced by alumina platelets

KOTOUL, M.; POKLUDA, J.; ŠANDERA, P.; DLOUHÝ, I.; CHLUP, Z.; BOCCACCINI, A.

Original Title

Toughening effects quantification in glass matrix composite reinforced by alumina platelets

English Title

Toughening effects quantification in glass matrix composite reinforced by alumina platelets

Type

WoS Article

Original Abstract

A borosilicate glass matrix composite containing alumina platelets was considered to investigate toughening mechanisms and crack tip behaviour in dispersion reinforced brittle matrix composites. Fracture toughness was determined applying the chevron notched specimen technique and fractographic analysis was employed to reveal the active toughening mechanisms with increasing content of reinforcement. A roughness-induced shielding effect has been quantified to prove the relation between fracture toughness and fracture surface roughness. Theoretical calculations of the fracture toughness enhancement based on a modified crack deflection model developed by Faber and Evans, combined with the influence of the increase in Young's modulus, were found to be in good agreement with experimental data. An effect of residual stresses upon toughening of the investigated composite is discussed.

English abstract

A borosilicate glass matrix composite containing alumina platelets was considered to investigate toughening mechanisms and crack tip behaviour in dispersion reinforced brittle matrix composites. Fracture toughness was determined applying the chevron notched specimen technique and fractographic analysis was employed to reveal the active toughening mechanisms with increasing content of reinforcement. A roughness-induced shielding effect has been quantified to prove the relation between fracture toughness and fracture surface roughness. Theoretical calculations of the fracture toughness enhancement based on a modified crack deflection model developed by Faber and Evans, combined with the influence of the increase in Young's modulus, were found to be in good agreement with experimental data. An effect of residual stresses upon toughening of the investigated composite is discussed.

Keywords

Glass matrix composites, crack deflection, fracture surface roughness, residual stresses

Key words in English

Glass matrix composites, crack deflection, fracture surface roughness, residual stresses

Authors

KOTOUL, M.; POKLUDA, J.; ŠANDERA, P.; DLOUHÝ, I.; CHLUP, Z.; BOCCACCINI, A.

RIV year

2012

Released

01.07.2008

ISBN

1359-6454

Periodical

Acta materialia

Volume

56

Number

12

State

United States of America

Pages from

2908

Pages to

2918

Pages count

11

BibTex

@article{BUT45563,
  author="Michal {Kotoul} and Jaroslav {Pokluda} and Pavel {Šandera} and Ivo {Dlouhý} and Zdeněk {Chlup} and Aldo {Boccaccini}",
  title="Toughening effects quantification in glass matrix composite reinforced by alumina platelets",
  journal="Acta materialia",
  year="2008",
  volume="56",
  number="12",
  pages="2908--2918",
  issn="1359-6454"
}