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Contact‐Induced Static Fatigue of Annealed and Tempered Glass
Author(s) -
CHANTIKUL P.,
MARSHALL D. B.,
LAWN B. R.
Publication year - 1978
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.1151-2916.1978.tb09350.x
Subject(s) - materials science , indentation , brittleness , composite material , diamond , tungsten , tungsten carbide , fracture mechanics , metallurgy
The role of environmentally assisted crack growth in the contact‐induced strength degradation of brittle surfaces was studied. Indentation fracture mechanics, incorporating a standard crack‐velocity function, are used to predict remaining strength as a function of contact load and duration. Strength tests on annealed and tempered glass disks, indented with a diamond pyramid or tungsten carbide sphere in a water environment, are in accord with the predicted degradation characteristics. The results indicate that fatigue effects are likely to be of only secondary importance in designing for maximum resistance to in‐service contact damage.