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PREDICTION OF FATIGUE LIFETIME OF NOTCHED MEMBERS
Author(s) -
HAMMOUDA M. M.,
MILLER K. J.
Publication year - 1979
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.1460-2695.1979.tb01095.x
Subject(s) - materials science , structural engineering , paris' law , fatigue testing , stress field , stress concentration , crack closure , composite material , stress (linguistics) , strain (injury) , fracture mechanics , finite element method , engineering , medicine , linguistics , philosophy
— A simple model for the estimation of the total fatigue life of notched members is presented. The number of cycles to failure is estimated as the summation of the cyclic life spent in: (1) the initiation of a dominant fatigue crack at the notch root; (2) the very early growth of this crack within the notch plastic zone; (3) the subsequent fatigue crack growth in the elastic stress‐strain field of the notch; and (4) the elastic stress field of the bulk material. Theoretical and experimental results are compared.