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Analysis of the static and fatigue strength of a damage tolerant 3D-reinforced joining technology on composite single lap joints

: Nogueira, A.C.; Drechsler, K.; Hombergsmeier, E.

Ouwehand, L.:
12th European Conference on Spacecraft Structures, Materials & Environmental Testing 2012. Proceedings. CD-ROM : 20 - 23 March 2012, ESTEC, Noordwijk, The Netherlands
Noordwijk: ESA Communications, 2012 (ESA SP 691)
ISBN: 978-92-9092-255-1
European Conference on Spacecraft Structures, Materials & Environmental Testing (ESTEC) <12, 2012, Noordwijk>
Fraunhofer LBF ()
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Fraunhofer IFAM ()
Fraunhofer IIS ()
Fraunhofer EMI ()
Fraunhofer ILT ()
Fraunhofer IPT ()
Fraunhofer ISC ()
Fraunhofer ITWM ()
Fraunhofer UMSICHT Oh ()
Fraunhofer IVI ()
Fraunhofer IWM ()
Fraunhofer IWS ()
Fraunhofer IWU ()
Fraunhofer IZFP ()

The increasing usage of carbon fiber reinforced plastics (CFRP) in aerospace together with the constant drive for fuel efficiency and lightweight design have imposed new challenges in next generation structural assemblies and load transfer efficient joining methods. To address this issue, an innovative technology, denominated Redundant High Efficiency Assembly (RHEA) joints, is introduced as a high-performance lightweight joint that combines efficient load transfer with good damage tolerance. A review of the ongoing research involving the RHEA joint technology, its through-thickness reinforcement concept and the results of quasi-static and fatigue tensile investigations of single lap shear specimens are exposed and discussed. Improvements in ultimate static load, maximum joint deformation, damage tolerance and fatigue life are encountered when comparing the performance of the RHEA lap shear joints to co-bonded reference specimens.