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Secondary elastic crack tip stresses which may influence very slow fatigue crack growth
Author(s) -
PARIS P. C.
Publication year - 2002
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 - 10.1046/j.1460-2695.2002.00559.x
Subject(s) - stress intensity factor , crack closure , materials science , structural engineering , intensity (physics) , paris' law , stress concentration , stress (linguistics) , mechanics , fracture mechanics , composite material , engineering , optics , physics , linguistics , philosophy
Secondary elastic crack tip stress intensity factors are defined in a convenient way consistent with the primary stress intensity factor definition. Methods of evaluation of these secondary stress intensity factors are developed. They are evaluated for example configurations with cracks. It is shown that the first secondary term may be sufficient to evaluate the effects of secondary stresses beyond the usual stress intensity factor and nominal normal stresses parallel to the crack direction.