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THE PROBLEM OF SCATTER OF FRACTURE TOUGHNESS DATA
Author(s) -
Troshchenko V. T.,
Yasniy P. V.,
Pokrovsky V. V.,
Podkolzin V. Yu.
Publication year - 1993
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.1460-2695.1993.tb00090.x
Subject(s) - materials science , fracture toughness , toughness , composite material , brittleness , fracture mechanics , softening , fracture (geology) , crack growth resistance curve , brittle fracture , structural engineering , crack closure , engineering
The authors studied the influence of the conditions for growing an initial fatigue crack on the scatter of fracture toughness data determined under static loading. It was found that the values of static fracture toughness for cyclically softening steels at temperatures below the brittle‐to‐ductile transition are essentially dependent on the degree of the material fatigue damage in the vicinity of the crack tip during the final stage of crack initiation. A method is proposed for evaluating the fracture toughness under static loading which makes it possible to take into account the material damage in the vicinity of the crack tip.