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Investigation and improvement of composite T-joints with metallic arrow-pin reinforcement

 
: Heimbs, Sebastian; Jürgens, Michael; Breu, Christoph; Ganzenmüller, Georg; Wolfrum, Johannes

:

Cloud, G.L. ; Society for Experimental Mechanics:
Joining Technologies for Composites and Dissimilar Materials. Vol.10: Proceedings of the 2016 Annual Conference on Experimental and Applied Mechanics : Orlando, Florida, June 6-9, 2016
Cham: Springer International Publishing, 2017 (Conference proceedings of the Society for Experimental Mechanics series)
ISBN: 978-3-319-42425-5 (Print)
ISBN: 978-3-319-42426-2 (Online)
S.33-40
Annual Conference on Experimental and Applied Mechanics <2016, Orlando/Fla.>
Englisch
Konferenzbeitrag
Fraunhofer EMI ()
T-joint; composite material; metal pin reinforcement; T-pull testing; numerical simulation

Abstract
Aiming at an increase in failure resistance and damage tolerance of composite T-joints, a novel reinforcement technique in through-thickness direction using metallic arrow-pins has been proposed by the authors in previous studies. In a recent investigation, different options for further improvement of the T-pull performance have been assessed. These include optimized arrow-pin configurations, filler and ply materials and thermoplastic interleaf layers. T-specimens have been manufactured and tested under quasi-static and high-rate dynamic loading conditions to quantify the influence of these measures. Additionally, FE models have been developed in LS-Dyna to predict the performance numerically. Model validation was conducted step by step using material coupon test data, dedicated single-pin pull-out tests and T-pull tests.

: http://publica.fraunhofer.de/dokumente/N-445451.html