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FRACTURE MECHANICS APPROACH FOR PREDICTION OF FATIGUE LIFE OF HIGH STRENGTH STEEL COMPONENTS
Author(s) -
Barui K. L.,
Bhattacharya B.
Publication year - 1992
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.1460-2695.1992.tb01299.x
Subject(s) - structural engineering , fracture (geology) , fracture mechanics , materials science , service life , stress (linguistics) , fatigue limit , engineering , composite material , linguistics , philosophy
— A fatigue life estimation procedure based on a fracture mechanics approach is analytically developed for components made of a 4140 grade high strength steel. The maximum allowable flaw sizes for both static and cyclic loads are computed. For different stress levels and shapes of the defects, initially‐existing, allowable defect size versus number of operating cycles, as well as the thickness versus tolerable defect sizes curves, are presented. The maximum allowable operating cycles of components for non‐destructively detectable minimum defects are also estimated. From these estimations, a more realistic prediction of the safe service life of components is possible.