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Multibarrier Kinetics of Brittle Fracture: I, Stress Dependence of the Subcritical Crack Velocity
Author(s) -
BROWN S. D.
Publication year - 1979
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.1151-2916.1979.tb19118.x
Subject(s) - brittleness , kinetics , fracture (geology) , materials science , constant (computer programming) , thermodynamics , mechanics , basis (linear algebra) , stress (linguistics) , physics , classical mechanics , mathematics , composite material , geometry , computer science , linguistics , philosophy , programming language
A general equation for the subcritical crack velocity in brittle materials is derived using steady‐state, multibarrier kinetics. It provides a basis from which specialized expressions can be developed for the crack velocity in specific cases. One social equation for v=v(K) at constant temperature, derived from the general expression, has a mathematic form that fits data representative of a wide variety of specific cases. Examples are presented and the equation is discussed in terms of its physical foundations.