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SCATTER OF FRACTURE TOUGHNESS IN AN INHOMOGENEOUS MATERIAL
Author(s) -
Mimura H.,
Ando K.,
Tsuji K.,
Kobayashi T.
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.tb01188.x
Subject(s) - weibull distribution , fracture toughness , materials science , homogeneous , fracture (geology) , composite material , toughness , mathematics , statistics , physics , statistical physics
— Usually, scatter in fracture toughness values is studied by assuming the employed steel plate to be macroscopically homogeneous in toughness, but it is probable that inhomogeneity contributes to scatter. This paper proposes a method which can discriminate scatter due to inhomogeneity from scatter measured in tests by using small size test pieces, cut out of previously fractured test specimens used for fracture toughness tests. By this method, the observed scatter of K c ( J ) in a previous paper by some of the present authors was shown to be affected considerably by inhomogeneity, although the observed scatter was fairly well described by a Weibull distribution analysis.