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FATIGUE CRACK GROWTH UNDER BIAXIAL LOADING
Author(s) -
Lam Y. C.
Publication year - 1993
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.1460-2695.1993.tb00098.x
Subject(s) - materials science , crack closure , crack growth resistance curve , paris' law , structural engineering , composite material , fracture mechanics , stress intensity factor , strain energy density function , stress concentration , stress (linguistics) , crack tip opening displacement , strain energy release rate , finite element method , engineering , linguistics , philosophy
Fatigue crack growth under biaxial loading for long cracks subjected to low cyclic stress levels was investigated. The biaxial stress ratio λ ranging from ‐0.5 to + 1.0 was considered. The strain energy density factor range was used as the criterion for predicting the crack growth rates and crack path. The agreement between prediction and experimental results was reasonable for crack growth rates and marginal for crack paths. The investigation highlighted the inherent difficulties for crack path prediction and indicated the increased sensitivity to initial crack angle and biaxial stress ratio when the biaxial stress ratio approaches unity.