@article{15984,
  abstract     = {{<jats:p>A new and promising approach to the reduction of greenhouse gas emissions is the use of improved lightweight constructions based on multi-material systems comprising sheet metal with local carbon fibre reinforced plastic (CFRP) reinforcements. The CFRP is used to reinforce highly stressed areas and can be aligned to specific load cases. The locally restricted application of CFRP means that the material costs can be effectively reduced by comparison to parts made entirely of CFRP on account of the expensive production process requiring the use of an autoclave. These parts are thus only used in high-priced products. The production of hybrid CFRP steel structures in a mass production process calls for an efficient production technology. Current research work within the scope of a collaborative research project running at the University of Paderborn is concentrating on the development of manufacturing processes for the efficient production of automotive structural components made up of sheet metal blanks with local CFRP patches. The project is focusing especially on basic research into the production of industrial components. The aim of the investigation is to create an efficient and controlled process for producing CFRP reinforced steel structures from semi-finished hybrid steel-CFRP material. This includes tool concepts and an appropriate process design to permit short process times. The basis of an efficient process design is an in-depth knowledge of the material behaviour, and hence a thorough characterisation was performed. Material parameters were determined for both simulation and forming. For this, monotonic tensile, shear and bending tests were conducted using both uncured prepregs and cured CFRP specimens. To achieve an accurate simulation of the forming process, a special material model for carbon fibre prepregs has been developed which also includes the anisotropic material behaviour resulting from fibre orientation, the viscoelastic behaviour caused by the matrix and the hardening effects that prevail during curing. Recent results show good qualitative agreement and will be presented in this paper. In order to control the properties of the hybrid components, four different tool concepts for the prepreg press technology have been developed and tested. The concepts are presented and the results of experimental investigations are discussed in this paper.</jats:p>}},
  author       = {{Schmidt, Hans Christian and Damerow, Ulf and Lauter, Christian and Gorny, Bernhard and Hankeln, Frederik and Homberg, Werner and Tröster, Thomas and Maier, Hans Jürgen and Mahnken, Rolf}},
  issn         = {{1662-9795}},
  journal      = {{Key Engineering Materials}},
  pages        = {{295--300}},
  title        = {{{Manufacturing Processes for Combined Forming of Multi-Material Structures Consisting of Sheet Metal and Local CFRP Reinforcements}}},
  doi          = {{10.4028/www.scientific.net/kem.504-506.295}},
  year         = {{2012}},
}

@inproceedings{15986,
  author       = {{Gorny, B. and Hankeln, Frederik and Lauter, Christian and Schmidt, H. C. and Damerow, U. and Mahnken, Rolf and Maier, H. J. and Tröster, Thomas and Homberg, Werner}},
  location     = {{Turin, Italy}},
  title        = {{{Simulation and manufacturing of deep drawn parts reinforced by carbon fibre prepregs}}},
  year         = {{2012}},
}

@article{16010,
  author       = {{Lauter, Christian and Tröster, Thomas and Brandis, Rinje and Gausemeier, Jürgen}},
  issn         = {{1865-4819}},
  journal      = {{Lightweight Design}},
  pages        = {{50--56}},
  title        = {{{Methodik für die Produktentstehung hybrider Leichtbaustrukturen}}},
  doi          = {{10.1365/s35725-013-0137-4}},
  volume       = {{5}},
  year         = {{2012}},
}

@techreport{16012,
  author       = {{Tröster, Thomas and Marten, Thorsten and Adelbert, Stefan and Kadim, Abdel}},
  isbn         = {{978-3-942541-18-3 }},
  publisher    = {{Abschlussberichte Forschungsvereinigung Stahlanwendung e.V., Verlag und Vertriebsgesellschaft mbH}},
  title        = {{{P 850 – Wirbelbetterwärmung von Platinen für das Presshärten}}},
  year         = {{2012}},
}

@inbook{52422,
  author       = {{Schlüter, Alexander and Rommel, Benjamin}},
  booktitle    = {{Energie- und klimaeffiziente Produktion: Grundlagen, Leitlinien und Praxisbeispiele}},
  editor       = {{Hesselbach, Jens}},
  pages        = {{290--314}},
  publisher    = {{Springer Vieweg}},
  title        = {{{Auf dem besten Weg zu neuen Lösungen: Kunststoffverarbeitung}}},
  year         = {{2012}},
}

@inbook{52418,
  author       = {{Schlüter, Alexander and Rommel, Benjamin and Bleeke, Wilhelm}},
  booktitle    = {{Energie- und klimaeffiziente Produktion: Grundlagen, Leitlinien und Praxisbeispiele }},
  editor       = {{Hesselbach, Jens}},
  isbn         = {{978-3-8348-0448-8}},
  publisher    = {{Springer Vieweg}},
  title        = {{{Energieströme messen}}},
  year         = {{2012}},
}

@article{52225,
  author       = {{Schäfer, Mirko and Wagner, Johannes and Schlüter, Alexander and Hesselbach, Jens}},
  issn         = {{2305-9974}},
  journal      = {{SNE Simulation Notes Europe}},
  number       = {{1}},
  pages        = {{1--6}},
  publisher    = {{ARGESIM Arbeitsgemeinschaft Simulation News}},
  title        = {{{Energy Flows in Industrial Buildings and Machines using the Example of a Node Model}}},
  doi          = {{10.11128/sne.22.tn.10103}},
  volume       = {{22}},
  year         = {{2012}},
}

@inproceedings{52228,
  author       = {{Schlüter, Alexander and Rosano, Michele and Böhm, Stefan and Calisir, Necat and Hesselbach, Jens}},
  issn         = {{978-605-63463-1-6}},
  location     = {{Istanbul, Turkey}},
  title        = {{{Effects of Implementing Efficiency Techniques in the Plastics Industry in Germany and Western Australia – A Comparative Modelling Assessment}}},
  year         = {{2012}},
}

@inbook{52420,
  author       = {{Schlüter, Alexander and Martin, Lars and Schäfer, Mirko}},
  booktitle    = {{Energie- und klimaeffiziente Produktion: Grundlagen, Leitlinien und Praxisbeispiele}},
  editor       = {{Hesselbach, Jens}},
  isbn         = {{	 978-3-8348-0448-8}},
  publisher    = {{Springer Vieweg}},
  title        = {{{Energieströme simulieren: Vom Prozess bis zur Fabrik}}},
  year         = {{2012}},
}

@inbook{52419,
  author       = {{Schlüter, Alexander and Schäfer, Mirko}},
  booktitle    = {{Energie- und klimaeffiziente Produktion: Grundlagen, Leitlinien und Praxisbeispiele}},
  editor       = {{Hesselbach, Jens}},
  isbn         = {{978-3-8348-0448-8}},
  pages        = {{101--102}},
  publisher    = {{Springer Vieweg}},
  title        = {{{Von der Modellbildung zur Simulation: Die Vorgehensweise}}},
  year         = {{2012}},
}

@inbook{52421,
  author       = {{Schlüter, Alexander and Leischner, Frank and Rommel, Benjamin}},
  booktitle    = {{Energie- und klimaeffiziente Produktion: Grundlagen, Leitlinien und Praxisbeispiele}},
  editor       = {{Hesselbach, Jens}},
  pages        = {{229--256}},
  publisher    = {{Springer Vieweg}},
  title        = {{{Prozesswärme und Abwärmenutzung}}},
  year         = {{2012}},
}

@misc{52446,
  author       = {{Schlüter, Alexander and Rosano, Michele and Böhm, Stefan and Calisir, Necat and Hesselbach, Jens}},
  publisher    = {{10th Conference on Sustainable Manufacturing}},
  title        = {{{Effects of Implementing Efficiency Techniques in the Plastics Industry in Germany and Western Australia – A Comparative Modelling Assessment, talk}}},
  year         = {{2012}},
}

@misc{52445,
  author       = {{Schlüter, Alexander}},
  publisher    = {{Klimaretter.info}},
  title        = {{{Wenn aus Wärme Kälte wird. Interview}}},
  year         = {{2012}},
}

@article{62788,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>We present a novel approach for the simulation of solid to solid phase‐transformations in polycrystalline materials. To facilitate the utilization of a non‐affine micro‐sphere formulation with volumetric‐deviatoric split, we introduce Helmholtz free energy functions depending on volumetric and deviatoric strain measures for the underlying scalar‐valued phase‐transformation model. As an extension of affine micro‐sphere models [5], the non‐affine micro‐sphere formulation with volumetric‐deviatoric split allows to capture different Young's moduli and Poisson's ratios on the macro‐scale [1]. As a consequence, the temperature‐dependent free energy assigned to each individual phase takes the form of an elliptic paraboloid in volumetric‐deviatoric strain space, where the energy landscape of the overall material is obtained from the contributions of the individual constituents. For the evolution of volume fractions, we use an approach based on statistical physics–taking into account actual Gibbs energy barriers and transformation probabilities [2]. The computation of individual energy barriers between the phases considered is enabled by numerical minimization of parametric intersection curves of elliptic Gibbs energy paraboloids. (© 2012 Wiley‐VCH Verlag GmbH &amp; Co. KGaA, Weinheim)</jats:p>}},
  author       = {{Ostwald, Richard and Bartel, Thorsten and Menzel, Andreas}},
  issn         = {{1617-7061}},
  journal      = {{PAMM}},
  number       = {{1}},
  pages        = {{277--278}},
  publisher    = {{Wiley}},
  title        = {{{Simulation of phase‐transformations based on numerical minimization of intersecting Gibbs energy potentials}}},
  doi          = {{10.1002/pamm.201210129}},
  volume       = {{12}},
  year         = {{2012}},
}

@article{62787,
  author       = {{Ostwald, Richard and Bartel, Thorsten and Menzel, Andreas}},
  issn         = {{0927-0256}},
  journal      = {{Computational Materials Science}},
  pages        = {{12--16}},
  publisher    = {{Elsevier BV}},
  title        = {{{Phase-transformations interacting with plasticity – A micro-sphere model applied to TRIP steel}}},
  doi          = {{10.1016/j.commatsci.2012.05.015}},
  volume       = {{64}},
  year         = {{2012}},
}

@article{20947,
  abstract     = {{Alkylphosphonic acids of different alkyl chain lengths were adsorbed on electrochemically polished NiTi surfaces from ethanolic solutions. The electropolishing process led to passive films mainly composed of Ti-oxyhydroxide. The surface showed nanoscopic etching pits with a depths of about 2 nm and a diameter of about 20 nm. The interfacial binding mechanism of the phosphonic acid group to the oxyhydroxide surface and the ordering of the monolayer were spectroscopically analysed by means of infrared reflection absorption FTIR-spectroscopy with (PM-IRRAS) and without (IRRAS) photoelastic modulation. The comparison of IRRAS and PM-IRRAS data of the long chain octadecylphosphonic acid monolayer proved that the binding mechanism of the phosphonic acid group to the oxyhydroxide surface is based on a mono-or bidentate bond, which is not stable in the presence of high water activities. An alkyl chain length of 17 CH2 groups is required for the formation of self-assembled monolayers, which are stable in aqueous environments. These long chain aliphatic organophosphonic acid monolayers were shown to inhibit anodic and cathodic surface reactions. (C) 2010 Elsevier B.V. All rights reserved.}},
  author       = {{Maxisch, M. and Ebbert, Christoph and Torun, B. and Fink, N. and de los Arcos, T. and Lackmann, J. and Maier, H. J. and Grundmeier, Guido}},
  issn         = {{1873-5584}},
  journal      = {{APPLIED SURFACE SCIENCE}},
  number       = {{6}},
  pages        = {{2011--2018}},
  title        = {{{PM-IRRAS studies of the adsorption and stability of organophosphonate monolayers on passivated NiTi surfaces}}},
  doi          = {{10.1016/j.apsusc.2010.09.044}},
  volume       = {{257}},
  year         = {{2011}},
}

@article{15969,
  author       = {{Lauter, Christian and Sarrazin, M. and Tröster, Thomas}},
  journal      = {{Adhäsion – Kleben und Dichten}},
  pages        = {{39--43}},
  publisher    = {{Springer Vieweg}},
  title        = {{{Multimaterialsysteme höchstfest verbunden}}},
  volume       = {{3/2011}},
  year         = {{2011}},
}

@inproceedings{15971,
  author       = {{Frantz, Meike and Stübbe, O. and Lauter, Christian and Schrange, J. and Tröster, Thomas}},
  location     = {{Köln}},
  title        = {{{Mechatronisches System zur Bestimmung der Restlebensdauer von Faserverbund-Leichtbaustrukturen am Beispiel einer Lauffeder}}},
  year         = {{2011}},
}

@inproceedings{15972,
  author       = {{Thomas, D. and Block, H. and Tröster, Thomas and Krogmeier, J.}},
  location     = {{Köln}},
  title        = {{{Herstellung von belastungsgerechten Strukturbauteilen mittels partieller induktiver Härtung}}},
  year         = {{2011}},
}

@article{15974,
  author       = {{Marten, Thorsten and Lauter, Christian and Tröster, Thomas}},
  journal      = {{Ingenieurspiegel}},
  pages        = {{67--69}},
  publisher    = {{Public Verlagsgesellschaft und Anzeigenagentur}},
  title        = {{{Automobilleichtbau durch höchstfeste Multimaterialsysteme}}},
  volume       = {{2/2011}},
  year         = {{2011}},
}