Premium
Crack stability analysis for rock fracture toughness tests
Author(s) -
Wang QiZhi
Publication year - 1995
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.1610190305
Subject(s) - fracture toughness , chevron (anatomy) , materials science , structural engineering , stability (learning theory) , fracture (geology) , composite material , toughness , fracture mechanics , geotechnical engineering , geology , engineering , computer science , paleontology , machine learning
A stable crack extension is a precondition for fracture toughness tests using chevron‐notched specimens. The paper analyses the stability problem for crack extension in two chevron‐notched specimens suggested by ISRM. Stability factors are calculated with various compliances of testing machine under different loading conditions. It is pointed out that the loading manner, compliance of the testing machine, as well as the specimen configurations have great influence on crack growth stability.