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Experimental investigations on the growth of small fatigue cracks in naval steel
Author(s) -
ELMALKI ALAOUI A.,
THEVENET D.,
ZEGHLOUL A.
Publication year - 2007
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.1460-2695.2007.01116.x
Subject(s) - structural engineering , paris' law , materials science , fatigue testing , damage tolerance , crack closure , goodman relation , fracture mechanics , engineering , forensic engineering , stress concentration , composite material , composite number
The concept of damage tolerance is now largely employed to evaluate the fatigue life of structures. However, part of this fatigue relies on the initiation and growth of small cracks. The fatigue behaviour of a naval structural steel (S355NL) was investigated. In order to characterize the behaviour of short and long cracks, tests were performed under constant amplitude loading for several load ratios between –1.0 and 0.5. A major part of fatigue life is constituted by short crack initiation and propagation.