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ON THE IMPACT FATIGUE CRACK GROWTH BEHAVIOUR OF METALLIC MATERIALS
Author(s) -
Tanaka T.,
Nakayama H.,
Kimura K.
Publication year - 1985
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.1460-2695.1985.tb00416.x
Subject(s) - materials science , paris' law , crack closure , aluminium , fatigue testing , aluminium alloy , composite material , structural engineering , fracture mechanics , metallurgy , engineering
The impact fatigue crack growth characteristics of a low carbon steel and an aluminium alloy were studied. An impact fatigue testing machine of the Hopkinson bar type was used in these experiments to conduct a series of crack growth tests under simple impact stresses. The following characteristics of impact fatigue crack growth behaviour were revealed: (1) crack growth rate is higher in impact fatigue than in non‐impact fatigue; (2) crack opening ratio in impact fatigue takes a higher value than in non‐impact fatigue; (3) crack tip plastic zone size is smaller in impact fatigue than in non‐impact fatigue.