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SOME COMMENTS ON A CURRENT MODEL FOR SCATTER OF FRACTURE TOUGHNESS IN CARBON STEELS
Author(s) -
Mimura H.
Publication year - 1995
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1995.tb00894.x
Subject(s) - materials science , fracture toughness , fracture (geology) , current (fluid) , crack growth resistance curve , composite material , toughness , range (aeronautics) , atmospheric temperature range , crack closure , fracture mechanics , forensic engineering , thermodynamics , engineering , electrical engineering , physics
The present paper proposes possible mechanisms to explain the following experimental facts reported in the literature.1 Fracture toughness has little dependence on plate thickness in the low temperature range. 2 In some steels, crack initiation sites are much closer to the crack tip than predicted in the transition temperature range by current theory.The former was attributed to little difference between fracture toughness at crack initiation and that of crack arrest in the low temperature range, and the latter was explained by accounting for the plastic strain effect on crack initiation.