Title: Self-regulated Production of an Automotive Composite Floor Pan

Authors: Michael Emonts, Kai Fischer, Sebastian Stender, and Nadine Magura

DOI: 10.33599/nasampe/s.19.1380

Abstract: In collaboration with seven partners from industry, the Aachen Center for Integrative Lightweight Production (AZL) of RWTH Aachen University and the Institute for Plastics Processing (IKV) at RWTH Aachen University are developing a self-regulating production system for structural composite parts, which combines the automated preforming technologies 3D Fiber Spraying and Towpreg Placement with a High Pressure Resin Transfer Moulding (HP-RTM) process. By embedding optical measuring equipment and a structural simulation into the production system, the system itself is capable to detect production fluctuations of the 3D Fiber Spraying process and to compensate these by deliberately adjusting the fiber structure of the subsequent Towpreg Placement process. The technical and economic advancement of this self-regulating system is demonstrated by the manufacturing of an automotive floor pan from long and continuous fiber reinforced epoxy. In this paper, the impact of production fluctuations on the mechanical performance is shown for representative load cases. Subsequently, the effect of a deliberate adjustment of the continuous fiber structure on the component stiffness is numerically investigated. Laws for fluctuation compensation are derived and presented.

References: [1] Patel, Critesh. Development of discontinuous fibre preforming processes. Nottingham: University of Nottingham, 2014 [2] Magagnato, Dino. Charakterisierung und Simulation der Formfüllung beim Resin Transfer Molding unter Berücksichtigung der lokalen Faserstruktur. Karlsruhe: Karlsruher Institut für Technologie (KIT), 2016 [3] Chaudhari, Raman. Characterization of high-pressure resin transfer molding process variants for manufacturing high performance composites. Pfinztal: Fraunhofer-Institut für Chemische Technologie ICT, 2014 - ISBN: 978-3-8396-0669-8 [4] Fecher, Marc L.. Analyse des 3D-Faserspritzverfahrens zur Fertigung komplexer und funktionsintegrierter RTM-Strukturbauteile. Aachen: Institut für Kunststoffverarbeitung (IKV), 2017 - ISBN: 978-3-95886-161-9 [5] Hopmann, Christian, Egger, Peter, Beste, Christian, Magura, Nadine, Müller, Norbert, Stender, Sebastian, Fischer, Kai. „Conference Paper Ausschussfreie FVK-Bauteilherstellung durch Inline-Prozessregelung“. 29. Internationales Kolloquium Kunststofftechnik 2018. Aachen, 02/28 – 03/01/2018. Institut für Kunststoffverarbeitung(IKV). Print book – ISBN 978-3-8440-5609-9 [6] Meier, Reinhold. Über das Fließverhalten von Epoxidharzsystemen und vibrationsunterstützte Harzinfiltrationsprozesse. München: TU München, 2017 - ISBN: 978-3-8439-3211-0 [7] Chen, Wei, Zuo, Wenjie. “Component sensitivity analysis of conceptual vehicle body for lightweight design under static and dynamic stiffness demands.” Int. J. Vehicle Design 66 (2011): 107–123. DOI: 10.1504/IJVD.2014.064546 [8] Boeman, Reymond G., Johnson, Nancy L. “Development of a cost competitive, composite intensive, body-in-white”. SAE International, 2002. DOI: 10.4271/2002-01-1905 [9] Helsen, Jan, Cremers, Luc, Mas, Peter, Sas, Paul. “Conference Paper Global static and dynamic car body stiffness based on a single experimental modal analysis test.” International Conference on Noise and Vibrations Engineering including USD2010. Leuven, 2010 [10] Ickert, Leif, Thomas, Dieter, Eckstein, Lutz, Tröster, Thomas. Beitrag zum Fortschritt im Automobilleichtbau durch belastungsgerechte Gestaltung und innovative Lösungen für lokale Verstärkungen von Fahrzeugstrukturen in Mischbauweise. Frankfurt/M, Berlin: VDA, 2012 [11] Faber, Jakob. Beitrag zur konstruktiven Gestaltung offener, verrippter Profile aus Faser-Thermoplast-Verbunden mit lastpfadgerechten Verstärkungen. Darmstadt: TU Darmstadt, 2016 [12] Jürgens, Hans W. Erhebung anthropometrischer Maße zur Aktualisierung der DIN 33402 - Teil 2. Dortmund/ Berlin/ Dresden: Wirtschaftsverlag NW, 2004 [13] DIN EN ISO 14125, „Faserverstärkte Kunststoffe – Bestimmung der Biegeeigenschaften“. Beuth Verlag, 2011 [14] DIN EN ISO 14126, „Bestimmung der Druckeigenschaften in der Laminatebene“. Beuth Verlag, 2000 [15] Klein, Bernd. Leichtbau-Konstruktion. Wiesbaden: Springer Vieweg, 2009

Conference: SAMPE 2019 - Charlotte, NC

Publication Date: 2019/05/20

SKU: TP19--1380

Pages: 15

Price: FREE