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Viscous Glass Crack Bridging Forces in a Sintered Glassy Alumina at Elevated Temperatures
Author(s) -
Jakus Karl,
Ritter John E.,
Schwillinski Roland H.
Publication year - 1993
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.1151-2916.1993.tb03686.x
Subject(s) - bridging (networking) , materials science , composite material , cantilever , computer network , computer science
Time‐dependent crack bridging forces were measured at temperatures from 1150° to 1275°C in a vitreous bonded alumina using the rear‐notched, short double cantilever beam technique. Glassy ligaments were observed to bridge the crack even after the crack entered the rear notch. The crack bridging force exhibited both a temperature and displacement rate dependency. A model was developed that describes this temperature and time dependence of the bridging forces that result from the viscous glass bridges.