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Prediction of fatigue crack growth path in mechanical joints using a weight function approach
Author(s) -
HEO S. P.,
YANG W. H.
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.1460-2695.2002.00538.x
Subject(s) - crack closure , structural engineering , materials science , stress intensity factor , paris' law , weight function , fracture mechanics , stress concentration , crack growth resistance curve , stress (linguistics) , path (computing) , mode (computer interface) , vibration fatigue , fatigue testing , composite material , engineering , mathematics , computer science , mathematical analysis , linguistics , philosophy , programming language , operating system
Cracks often initiate from the mechanical joints which are widely used in structural components. It has been reported that cracks in mechanical joints are under mixed‐mode condition and there is a critical angle at which mode I stress intensity factor becomes maximum. The crack propagates in an arbitrary direction and the prediction of fatigue crack growth path is needed to provide against crack propagation and examine safety. In this study, mixed‐mode fatigue crack growth tests are performed for horizontal and critical inclined cracks in mechanical joints. Fatigue crack growth paths are predicted using a weight function approach and maximum tangential stress criterion.