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Effect of a Microheterogeneous Structure on the Fracture Toughness of Glasses
Author(s) -
VERNAZ E.,
LARCHE F.
Publication year - 1980
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1980.tb10721.x
Subject(s) - borosilicate glass , materials science , fracture toughness , stress intensity factor , composite material , fracture (geology) , stress (linguistics) , fracture mechanics , linguistics , philosophy
A model is presented that describes the variation of the critical stress intensity factor, K k ., of glasses as a function of composition. It is based on a microheterogeneous structure that produces nonannealable stresses in the material. The effect of these internal stresses on the measured values of K IC is expressed as a function of the mechanical and thermal parameters of the material. Application to several borosilicate glasses is presented and discussed.