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.
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Acknowledgement
Sincere thanks are given to Jose Luis Sandoval Murillo and Florian Troeltsch for their contributions to the numerical studies and to Christian Metzner for the support in the thermoplastic interleaf technology.
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Heimbs, S., Jürgens, M., Breu, C., Ganzenmüller, G., Wolfrum, J. (2017). Investigation and Improvement of Composite T-Joints with Metallic Arrow-Pin Reinforcement. In: Cloud, G., Patterson, E., Backman, D. (eds) Joining Technologies for Composites and Dissimilar Materials, Volume 10. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-42426-2_4
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DOI: https://doi.org/10.1007/978-3-319-42426-2_4
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