Browsing by Subject "Microstructure"

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  • Muschinski, Andreas (Cambridge : Cambridge University Press, 1996)
    A Kolmogorov-type similarity theory of locally homogeneous and isotropic turbulence generated by a Smagorinsky-type large-eddy simulation (LES) at very large LES Reynolds numbers is developed and discussed. The underlying ...
  • Niendorf, T.; Krooß, P.; Somsen, C.; Rynko, R.; Paulsen, A.; Batyrshina, E.; Frenzel, J.; Eggeler, Gunther; Maier, Hans Jürgen (Singapore : World Scientific Publishing Co. Pte Ltd, 2015)
    Titanium-tantalum shape memory alloys (SMAs) are promising candidates for actuator applications at elevated temperatures. They may even succeed in substituting ternary nickel-titanium high temperature SMAs, which are either ...
  • Freiburg, D.; Biermann, D.; Peuker, A.; Kersting, P.; Maier, Hans Jürgen; Möhwald, Kai; Knödler, Patrick; Otten, Maik (Amsterdam : Elsevier, 2014)
    Thermally sprayed coatings and tribological surfaces are a point of interest in many industrial sectors. They are used for better wear resistance of lightweight materials or for oil retention on surfaces. Lightweight ...
  • Holzweissig, Martin J.; Kanagarajah, Pirabagini; Maier, Hans Jürgen (London : SAGE Publications Ltd., 2014)
    In this study, digital image correlation was used for two widely different cases to assess the potential and the limitations of the technique for applications at high temperatures. Specifically, digital image correlation ...
  • Rahlves, Maik; Kelb, Christian; Rezem, Maher; Schlangen, Sebastian; Boroz, Kristian; Gödeke, Dina; Ihme, Maximilian; Roth, Bernhard (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    Polymer-based holographic and diffractive optical elements have gained increasing interest due to their potential to be used in a broad range of applications, such as illumination technology, micro-optics, and holography. ...
  • Baum, Martina J.; Heepe, Lars; Fadeeva, Elena; Gorb, Stanislav N. (Frankfurt am Main : Beilstein-Institut zur Förderung der Chemischen Wissenschaften, 2014)
    The microstructure investigated in this study was inspired by the anisotropic microornamentation of scales from the ventral body side of the California King Snake (Lampropeltis getula californiae). Frictional properties ...
  • Schlie, Sabrina; Fadeeva, Elena; Koch, Jürgen; Ngezahayo, Anaclet; Chichkov, Boris (London : SAGE Publications Ltd., 2010)
    In this study we investigate the potential of femtosecond laser generated micrometer sized spike structures as functional surfaces for selective cell controlling. The spike dimensions as well as the average spike to spike ...
  • Sadek, E.; Fouad, N.A. (London : SAGE Publications Ltd., 2013)
    Extruded polystyrene rigid foams have attracted a great attention as a superior load-bearing thermal insulation material since their implementation in building construction. One of the most common application areas of this ...
  • Graf, Marcel; Ullmann, Madlen; Korpala, Grzegorz; Wester, Hendrik; Awiszus, Birgit; Kawalla, Rudolf; Behrens, Bernd-Arno (Basel : MDPI AG, 2018)
    Developments in technology rely increasingly on the numerical simulation of single process steps up to whole process chains using commercially available or user-written software systems, mostly based on the finite element ...
  • Behrens, Bernd-Arno; Hübner, Sven; Chugreev, Alexander; Bohne, Florian; Seel, Andreas; Jalanesh, Masood; Wölki, Kai (Amsterdam : Elsevier B.V., 2018)
    One possibility to adjust tailored properties in hot stamping is the application of a masking concept to prevent a complete austenitization. In this study different concepts were investigated in order to use them as a ...
  • Rahlves, Maik; Rezem, Maher; Kelb, Christian; Boroz, Kristian; Gödeke, Dina; Schlangen, Sebastian; Reithmeier, Eduard; Roth, Bernhard (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    Polymer based diffractive optical elements have gained increasing interest due to their potential to be used in various applications such as illumination technology, micro optics and holography. We present a novel production ...
  • Schlangen, Sebastian; Bremer, Kort; Zheng, Yulong; Isaak, Andreas; Wurz, Marc Christopher; Böhm, Sebastian; Wellmann, Felix; Steinke, Michael; Pelegrina Bonilla, Gabriel; Neumann, Jörg; Kracht, Dietmar; Roth, Bernhard; Overmeyer, Ludger (Bellingham, WA : SPIE - International Society for Optical Engineering, 2018)
    Mode division multiplexing (MDM) could bring a technological progress in the field of optical telecommunication by increasing the data transmission bandwidth. A key challenge for enabling MDM lies in manufacturing of ...
  • Gerstein, G.; Isik, K.; Gutknecht, F.; Sieczkarek, P.; Ewert, J.; Tekkaya, A.E.; Clausmeyer, T.; Nürnberger, F. (Bristol : Institute of Physics Publishing, 2017)
    The evolution of damage in geared components manufactured from steel sheets was investigated, to analyse the influence of damage caused by the sheet-bulk-metal forming. Due to the inhomogeneous and multi-axial deformation ...
  • Liang, Fangyi; Luo, Huixia; Partovi, Kaveh; Ravkina, Olga; Cao, Zhengwen; Liu, Yi; Caro, Jürgen (Cambridge : Royal Society of Chemistry, 2014-01-10)
    By cobalt-doping of the mixed conducting phase PSFC, a good combination of high CO2 stability and high oxygen permeability is obtained for the 60 wt% Ce0.9Pr0.1O2-delta d -40 wt% Pr0.6Sr0.4Fe0.5Co0.5O3-delta (CP-PSFC) dual ...
  • Temuujin, J.; Minjigmaa, A.; Bayarzul, U.; Kim, D.S.; Lee, S.-H.; Lee, H.J.; Ruescher, C.H.; MacKenzie, K.J.D. (Madrid : Consejo Superior de Investigaciones Científicas (CSIC), 2017)
    Alkali-activated materials were prepared from pond ash from the Darkhan city (Mongolia) thermal power station. This ash contains about 60 wt % X-ray amorphous material in addition to quartz, mullite, hematite and ...
  • Rüsing, Christian; Lambers, H.-G.; Lackmann, Jan; Frehn, Andreas; Nagel, M.; Schaper, Mirko; Maier, Hans Jürgen; Niendorf, T. (Amsterdam : Elsevier B.V., 2015)
    The current work investigates the impact of pre-deformation temperatures on the microstructure evolution and the subsequent cyclic stress-strain response of high-manganese steel showing twinning-induced plasticity (TWIP) ...
  • Stolbchenko, Mykhailo; Grydin, Olexandr; Nürnberger, Florian; Samsonenko, Andrii; Schaper, Mirko (Amsterdam : Elsevier, 2014)
    In the present study experimental results of twin-roll cast aluminium-steel clad strips of a thickness of 2.0 mm using the example of pure aluminium and an austenitic steel are presented. Electron probe measurements of the ...
  • Cheng, Xinbin; Dong, Siyu; Zhi, Song; Paschel, Sebastian; Balasa, Istvan; Ristau, Detlev; Wang, Zhanshan (London : Nature Publishing Group, 2019)
    With the ever-increasing laser power and repetition rate, thermal control of laser media is becoming increasingly important. Except for widely used air cooling or a bonded heat sink, water cooling of a laser medium is more ...