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Numerical Fracture Analysis of Chevron‐Notched Specimens: 11, Stability Condition for Crack Growth
Author(s) -
SAKAI MOTOTSUGU,
YAMASAKI KOUZOU
Publication year - 1983
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.1151-2916.1983.tb10053.x
Subject(s) - materials science , crack growth resistance curve , stability (learning theory) , fracture mechanics , crack closure , composite material , shear (geology) , fracture (geology) , mechanics , physics , computer science , machine learning
Stability conditions for crack growth were studied in chevronnotched specimens with vacious kinds of geometry. The generalized Gibbs free energy G (α) for crack growth in a system composed of a specimen and a testing machine was theoretically considered and analyzed numerically using the results obtained in Part I. We emphasize in both works the importance of the surface boundary effect on the interlaminar shear correction factor k and show that G (α) varies discontinuously with the crack growth if Bluhm's assumption is applied. In addition to the geometric effects on the stability of crack growth, the influence of the testing machine's compliance was considered.