Characterisation of the draping behaviour of unidirectional non-crimp fabrics (UD-NCF) |
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| Affiliation: | 1. Karlsruhe Institute of Technology (KIT), Institute of Vehicle System Technology (FAST), Department of Lightweight Technology (LBT), Karlsruhe, Germany;2. Karlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM), Karlsruhe, Germany;3. Fraunhofer Institute for Chemical Technology, Pfinztal, Germany;1. Translational Research Laboratory, Catalan Institute of Oncology, IDIBELL, L''Hospitalet de Llobregat, 08908 Catalonia, Spain;2. Biomarkers and Susceptibility Unit, Cancer Prevention and Monitoring Programme, Catalan Institute of Oncology, IDIBELL, L''Hospitalet de Llobregat, Catalonia, Spain;3. Oncology Programme, Institute for Research in Biomedicine IRB, Barcelona, Catalonia, Spain;4. Pathology Department, Hospital Universitari de Bellvitge, IDIBELL, L''Hospitalet de Llobregat, Catalonia, Spain;5. Medical Oncology Department, Catalan Institute of Oncology, IDIBELL, L''Hospitalet de Llobregat, Catalonia, Spain;1. Center for Material Forming (CEMEF), Mines Paristech, 1 rue Claude Daunesse, CS 10207, 06904 Sophia Antipolis Cedex, France;2. GeM, UMR 6183, Ecole Centrale de Nantes, 1 rue de la Noë, 44321 Nantes Cedex 3, France;3. Owens Corning, Composites Solutions Business, Science & Technology Center, 767 Quai des Allobroges, 73000 Chambéry, France;1. Institute for Carbon Composites, Technische Universität München, Faculty of Mechanical Engineering, Boltzmannstraße 15, D-85478 Garching b. München, Germany;2. Airbus Helicopters Deutschland GmbH, Laboratory for Materials and Processes, Industriestraße 4, D-86609 Donauwörth, Germany;1. CIKONI Composites Innovation, 70569 Stuttgart, Germany;2. Technische Universität Dresden, Institute of Textile Machinery and High Performance Material Technology (ITM), 01062 Dresden, Germany;3. Technische Universität Dresden, Dresden Center for Computational Materials Science (DCMS), 01062 Dresden, Germany |
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| Abstract: | Thin composites shell structures manufactured from stitched unidirectional non-crimp fabrics (UD-NCF) in a liquid composite moulding process provides high lightweight design capabilities. However, draping behaviour of UD-NCF has been investigated only sparsely, in contrast to research on woven fabrics or biaxial non-crimp fabrics. Hence, this contribution focuses on fundamental investigations of the draping behaviour of UD-NCF. Within this investigation picture frame tests and uniaxial bias extension tests are performed to examine the in-plane shear behaviour of UD-NCF. Furthermore, a new method is presented to examine ambivalent tensile behaviour of UD-NCF transverse to the carbon fibre roving orientation. In particular, the influence of thin glass fibres on transverse tensile behaviour of UF-NCFs is investigated using a new clamping mechanism in tensile testing. Finally, hemisphere tests are performed to observe the forming behaviour of UD-NCF in a realistic forming process and to evaluate the proposed material characterisation methods regarding its suitability for UD-NCFs. |
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| Keywords: | A Fabrics/textile B Mechanical properties D Mechanical testing E Forming |
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