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Fatigue crack growth in fibre metal laminates with multiple open holes
Author(s) -
CHANG P.Y.,
YEH P.C.,
YANG J.M.
Publication year - 2012
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.1460-2695.2011.01595.x
Subject(s) - materials science , stress intensity factor , paris' law , crack closure , composite material , bridging (networking) , aluminium , stress concentration , structural engineering , stress field , stress (linguistics) , crack growth resistance curve , fracture mechanics , finite element method , engineering , computer network , linguistics , philosophy , computer science
The fatigue crack growth behaviour of hybrid S2‐glass reinforced aluminium laminates (Glare) with multiple open holes was investigated experimentally and analytically. It was observed that the presence of multiple‐site fatigue damage would increase crack growth rates in the metal layers as two propagating cracks converged. An analytical crack growth model was established for predicting crack growth rates based on empirical Paris equation. The effective stress intensity factor at crack tips is a function of mode I far‐field stress intensity factor, crack opening stress intensity factor and effective non‐dimensional stress intensity factor that incorporated the crack‐bridging effect in fibre metal laminates. The predicted results under different applied stress can capture the trend of averaged crack growth rates in experiments, although deviation exists in the predictions.