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Fatigue crack growth in fibre metal laminates under selective variable‐amplitude loading
Author(s) -
PLOKKER H. M.,
KHAN S. U.,
ALDERLIESTEN R. C.,
BENEDICTUS R.
Publication year - 2009
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.1460-2695.2009.01333.x
Subject(s) - materials science , paris' law , amplitude , glare , composite material , aluminium , metal , bridging (networking) , structural engineering , crack closure , fracture mechanics , optics , metallurgy , engineering , computer science , computer network , physics , layer (electronics)
To extend the predictive capability of existing crack growth models for fibre metal laminates under constant amplitude fatigue loading to variable‐amplitude loading, further research on variable‐amplitude fatigue mechanisms in fibre metal laminates is necessary. In response to this need, an experimental study into the effects of multiple overloads, underloads and various block‐loading sequences on crack growth in the fibre metal laminate Glare was investigated. Crack growth retardation effects were observed in the tests; however, the magnitude of these effects was lower than seen in monolithic aluminium because of fibre bridging. As a result, predictions of the observed behaviour were attempted using an existing constant‐amplitude fatigue crack growth model for Glare in combination with a linear damage accumulation law.