Browsing by Subject "High temperature"

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  • A vibration control for disassembly of turbine blades 
    Mullo, Santiago D.; Pruna, Edwin; Wolff, Julius; Raatz, Annika (Amsterdam : Elsevier B.V., 2019)
    Typically, disassembly forces are unknown due to high forces or high temperatures during product operation, where assembly connections solidify. For the regulation of disassembly forces a controller is developed. The ...
  • Adiabatic spin cooling using high-spin Fermi gases 
    Colomé-Tatché, Maria; Klempt, Carsten; Santos, Luis; Vekua, Teimuraz (Bristol : IOP Publishing Ltd., 2011)
    Spatial entropy redistribution plays a key role in adiabatic cooling of ultra-cold lattice gases. We show that high-spin fermions with a spatially variable quadratic Zeeman coupling may allow for the creation of an inner ...
  • Creation of silicon vacancy color centers with a narrow emission line in nanodiamonds by ion implantation 
    Takashima, Hideaki; Fukuda, Atsushi; Shimazaki, Konosuke; Iwabata, Yusuke; Kawaguchi, Hiroki; Schell, Andreas W.; Tashima, Toshiyuki; Abe, Hiroshi; Onoda, Shinobu; Ohshima, Takeshi; Takeuchi, Shigeki (Washington, DC : Optica, 2021)
    Nanodiamonds containing silicon-vacancy (SiV) centers with high brightness, high photo-stability, and a narrow zero phonon line (ZPL) have attracted attention for bioimaging, nanoscale thermometry, and quantum technologies. ...
  • Cyclic degradation of titanium-tantalum high-temperature shape memory alloys - The role of dislocation activity and chemical decomposition 
    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 ...
  • Development of a form-flexible handling technology with active cooling for hybrid components in forging processes 
    Ince, Caner-Veli; Geggier, Jan; Bruns, Christopher; Raatz, Annika (Amsterdam [u.a.] : Elsevier, 2021)
    Tailored Forming is a novel manufacturing process for the production of forged hybrid components. In contrast to components made of mono-materials, hybrid components can be adapted to the respective loads by combining ...
  • Digital image correlation at high temperatures for fatigue and phase transformation studies 
    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 ...
  • Experimental investigation of additively manufactured high-temperature heat exchangers 
    Fuchs, Marco; Bodemer, Julian; Kabelac, Stephan (Amsterdam [u.a.] : Elsevier, 2023)
    This article examines various additively manufactured heat exchangers for high-temperature applications. The heat exchangers differ in terms of their internal fin structure as well as optimizations in terms of manufacturing ...
  • Hydrogen Purification through a Highly Stable Dual-Phase Oxygen-Permeable Membrane 
    Jia, Lujian; He, Guanghu; Zhang, Yan; Caro, Jürgen; Jiang, Heqing (Weinheim : Wiley-VCH, 2021)
    Using oxygen permeable membranes (OPMs) to upgrade low-purity hydrogen is a promising concept for high-purity H2 production. At high temperatures, water dissociates into hydrogen and oxygen. The oxygen permeates through ...
  • Remote frequency measurement of the 1S 0→ 3P 1 transition in laser-cooled 24Mg 
    Friebe, J.; Riedmann, M.; Wübbena, T.; Pape, A.; Kelkar, H.; Ertmer, Wolfgang; Terra, O.; Sterr, Uwe; Weyers, S.; Grosche, G.; Schnatz, H.; Rasel, Ernst Maria (Bristol : IOP Publishing Ltd., 2011)
    We perform Ramsey-Bordé spectroscopy on laser-cooled magnesium atoms in free fall to measure the 1S 0→ 3P 1 intercombination transition frequency. The measured value of 655 659 923 839 730 (48) Hz is consistent with our ...
  • Simulation of Compression Heat Pump Cycles Using NH3/H2O Mixtures to Estimate Their Working Domains 
    Loth, Maximilian; Kabelac, Stephan (Weinheim : Wiley-VCH Verl., 2023)
    A computer-aided process design methodology is used to determine the limits of NH3/H2O mixtures in different heat pump cycles from 20 °C to 150 °C. The evaluation is based on a defined parameter set consisting of the ...