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|Document Type: ||Article|
|Title: ||Fail-Safe Design of Integral Metallic Aircraft Structures Reinforced by Bonded
|Authors: ||Zhang, Xiang|
Figueroa-Gordon, Douglas J.
Irving, Phil E.
|Issue Date: ||2009|
|Citation: ||X. Zhanga, M. Boscoloa, D. Figueroa-Gordonb, G. Allegria and P.E. Irving. Fail-
Safe Design of Integral Metallic Aircraft Structures Reinforced by Bonded Crack
Retarders. Engineering Fracture Mechanics, Vol. 76, Issue 1, January 2009, Pages
|Abstract: ||This paper presents an investigation on the effectiveness of crack growth
retarders bonded to integral metallic structures. The study was performed by
both numerical modelling and experimental tests. It focuses on aluminium alloy
panels reinforced by bonded straps made of carbon-epoxy, glass-epoxy composite
materials or a titanium alloy. The goal was to develop a fail-safe design for
integrally stiffened skin-stringer panels applicable to aircraft wing
structures. The modelling strategy and finite element models are presented and
discussed. The requirements that the models should meet are also discussed. The
study has focused on establishing the extent of crack retarder benefits, in
terms of fatigue crack growth life improvement, by numerical simulation and
experimental tests of various crack retarders. The results of predicted fatigue
crack growth retardation have been validated by tests of laboratory samples.
This study concludes that by bonding discrete straps to an integral structure,
the fatigue crack growth life can be significantly improved.|
|Appears in Collections:||Staff publications - School of Engineering|
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