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Effective Fracture Toughness of Microcracked Materials
Author(s) -
ROSE L. R. F.
Publication year - 1986
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.1151-2916.1986.tb07409.x
Subject(s) - fracture toughness , materials science , stress intensity factor , cracking , toughening , composite material , toughness , fracture mechanics , fracture (geology) , stress (linguistics) , forensic engineering , engineering , linguistics , philosophy
Explicit analytical formulas are derived for the stress intensity factors at the tips of a main crack and of a microcrack for the two‐dimensional case of a collinear microcrack. This configuration is used to derive an estimate of the toughness degradation due to microcracks linking up with an advancing main crack. The implications of this estimate for theoretical predictions of the toughening due to stress‐induced micro‐cracking are discussed.