Publication detail
Toughening effects quantification in glass matrix composite reinforced by alumina platelets
KOTOUL, M. POKLUDA, J. ŠANDERA, P. DLOUHÝ, I. CHLUP, Z. BOCCACCINI, A.
Czech 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
journal article in Web of Science
Language
en
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.
Czech 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 in Czech
Glass matrix composites, crack deflection, fracture surface roughness, residual stresses
Keywords in English
Glass matrix composites, crack deflection, fracture surface roughness, residual stresses
RIV year
2008
Released
01.07.2008
ISSN
1359-6454
Journal
Acta materialia
Volume
56
Number
12
Pages from–to
2908–2918
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",
month="July",
pages="2908--2918",
issn="1359-6454"
}