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THE EFFECT OF PRIOR FATIGUE CYCLING ON TENSILE PROPERTIES OF COPPER AND ALUMINIUM WIRES
Author(s) -
Kumar V. M.,
Gupta N. K.
Publication year - 1988
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.1460-2695.1988.tb01175.x
Subject(s) - materials science , aluminium , copper , hysteresis , cyclic stress , ultimate tensile strength , amplitude , tension (geology) , stress (linguistics) , metallurgy , composite material , structural engineering , engineering , linguistics , philosophy , physics , quantum mechanics
— Having previously been subjected to cyclic loading below the elastic limit, wire specimens of aluminium and copper were subjected to uniaxial tension tests. The results obtained are presented with a view to studying the accumulated changes in stress‐strain behaviour during fatigue. The data obtained for virgin as well as for cyclic preloaded specimens were fitted to the Ramberg‐Osgood relation and useful empirical relationships were developed between its parameters and the prior cyclic stress amplitude as well as the number of prior fatigue cycles. Using these relations, progressive changes in the width and the area of hysteresis loops have been computed and the results obtained have been compared with the experiments.