Design of composite materials with improved impact properties |
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| Affiliation: | 1. Dipartimento di Architettura, Università di Roma Tre, Via della Madonna dei Monti 40, 00184 Roma, Italy;2. Dipartimento di Ingegneria, Università di Roma Tre, Via Vito Volterra 62, 00146 Roma, Italy;3. Accademia Nazionale dei Lincei and Department of Mathematics, University of Rome TorVergata, Via della Ricerca Scientifica 1, 00133 Roma, Italy;1. School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, PO Box 71, Bundoora, VIC, 3083, Australia;2. Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy;1. Université de Lyon, INSA-Lyon, LaMCoS, CNRS UMR 5259, 18-20 Rue des Sciences, bâtiment d’Alembert, F-69621 Villeurbanne, France;2. Laboratoire de Mécanique et Génie Civil, LMGC, Université Montpellier, CNRS, CC048, Place E. Bataillon, F-34095 Montpellier, France;3. School of Mechanical and Manufacturing Engineering, UNSW Australia, Sydney, NSW 2052, Australia;1. Lodz University of Technology, Department of Automation, Biomechanics and Mechatronics, 1/15 Stefanowskiego Str., 90-924 Łódź and Warsaw University of Technology, Department of Vehicles, 84 Narbutta Str., 02-524 Warsaw, Poland;2. Saratov State Technical University, Department of Mathematics and Modelling, Politehnicheskaya 77, 410054 Saratov, Russian Federation |
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| Abstract: | Composites have been widely used in applications where there is a risk of impact, due to the excellent properties these materials display for absorbing impact energy. However, composites during impact situations typically generate an enormous number of small pieces, due to the energy absorption mechanism of these materials, a mechanism which does not include plastic deformation. This can prove dangerous in sports competitions, where the small fragments of the original structure may harm competitors.This study was designed to explore the possibility of incorporating a material which, whilst maintaining a high level of energy absorption without any plastic deformation mechanism, was able to maintain its original form, or at least significantly reduce the number of pieces generated after impact.The addition of a polyamide layer, NOMEX®, to a monolithic fabric laminate was investigated in this paper. The process of fabrication is described and the different properties of the material under consideration: interlaminar fracture toughness energy (GIC), indentation (id) and delamination after impact (Ai) and compression after impact (σCAI), were measured and compared with those of the original monolithic fabric. |
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| Keywords: | A Carbon fibre A Hybrid B Impact behaviour D Mechanical testing |
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