Auflistung nach Schlagwort "Models"

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  • Abrasion monitoring and automatic chatter detection in cylindrical plunge grinding 
    Ahrens, M.; Fischer, R.; Dagen, M.; Denkena, Berend; Ortmaier, Tobias (Amsterdam : Elsevier, 2013)
    Using conventional grinding wheels, wheel-sided chatter vibration is one of the limiting factors in terms of productivity and surface finish. Initial vibration related to the dynamic behavior of the machine tool copy on ...
  • An Active Damping Method for Chatter Vibration in Plunge Grinding Using Electromagnetic Actuators 
    Ahrens, M.; Dagen, M.; Denkena, Berend; Ortmaier, Tobias (Amsterdam : Elsevier, 2016)
    Using conventional grinding wheels, self-excited vibrations are one of the most limiting factors in terms of productivity and process stability in cylindrical plunge grinding. Depending on the dynamic behavior of the ...
  • Assessing the Device-performance Impacts of Structural Defects with TCAD Modeling 
    Needleman, David Berney; Wagner, Hannes; Altermatt, Pietro P.; Buonassisi, Tonio (Amsterdam : Elsevier, 2015)
    Advanced solar cell architectures like passivated emitter and rear (PERC) and heterojunction with intrinsic thin layer (HIT) are increasingly sensitive to bulk recombination. Present device models consider homogeneous bulk ...
  • Augmenting Milling Process Data for Shape Error Prediction 
    Denkena, Berend; Dittrich, Marc-André; Uhlich, Florian (Amsterdam : Elsevier B.V., 2016)
    New integrated sensors and connected machine tools generate a tremendous amount of in-depth process data. The continuous transformation of the obtained data into deployable machining knowledge allows for faster ramp-ups, ...
  • Automated extraction of the Antarctic coastline using snakes 
    Klinger, T.; Heipke, Christian; Ott, N.; Schenke, H.W.; Ziems, M. (Göttingen : Copernicus GmbH, 2010)
    In this paper we present an automatic approach for coastline detection from images which is based on parametric active contours (snakes). Snakes require the definition of an energy functional that reflects the underlying ...
  • Estimation of Dynamic Grinding Wheel Wear in Plunge Grinding 
    Ahrens, M.; Damm, J.; Dagen, M.; Denkena, Berend; Ortmaier, T. (Amsterdam : Elsevier BV, 2017)
    Using conventional grinding wheels, self-excited vibrations are one of the most limiting factors in terms of productivity and process stability in cylindrical plunge grinding. Depending on the dynamic behavior of the ...
  • Influence of various irradiance models and their combination on simulation results of photovoltaic systems 
    Hofmann, Martin; Seckmeyer, Gunther (Basel : MDPI AG, 2017)
    We analyze the output of various state-of-The-Art irradiance models for photovoltaic systems. The models include two sun position algorithms, three types of input data time series, nine diffuse fraction models and five ...
  • Investigations on scour development at tripod foundations for offshore wind turbines: Modeling and application 
    Stahlmann, Arne; Schlurmann, Torsten (Reston : American Society of Civil Engineers, 2012)
    Regarding offshore constructions, there is still a lack in knowledge of scour progression for complex structures like foundations for offshore wind energy converters at present, which is however necessary for its dimensioning. ...
  • Modeling of photoluminescence in laser-based lighting systems 
    Chatzizyrli, Elisavet; Tinne, Nadine; Lachmayer, Roland; Neumann, Jörg; Kracht, Dietmar (Bellingham, Wash. : SPIE, 2017)
    The development of laser-based lighting systems has been the latest step towards a revolution in illumination technology brought about by solid-state lighting. Laser-activated remote phosphor systems produce white light ...
  • Multi-scale positioning control model of a novel fluid dynamic drive by coupling process and adapted CFD models 
    Möhring, H.-C.; Kayapinar, H.; Denkena, Berend (Amsterdam : Elsevier BV, 2012)
    In this paper multi-scale modeling of a novel fluid dynamic planar positioning system is described and compared with a simplified plant model. The multi-scale model is realized by coupling a mechatronic simulation model ...
  • Multiple scale modeling of Al2O3 thin film growth in an ion beam sputtering process 
    Turowski, Marcus; Jupé, Marco; Melzig, Thomas; Pflug, Andreas; Ristau, Detlev (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    A multiple scale model approach is presented in order to investigate Al2O3 thin film growth in the framework of an existing Ion Beam Sputtering (IBS) coating process. Therefore, several simulation techniques are combined ...
  • Multiple-model based verification of japanese road data 
    Ziems, M.; Fujimura, H.; Heipke, Christian; Rottensteiner, Franz (Göttingen : Copernicus GmbH, 2010)
    This paper describes a semi-automatic system for road verification from high resolution orthophotos in an urban context. The system combines several road detection and road verification approaches from current literature ...
  • Numerical and experimental study on tsunami run-up and inundation influenced by macro roughness elements 
    Goseberg, Nils; Schlurmann, Torsten (Reston : American Society of Civil Engineers, 2010)
    This research study considers long wave run-up experimentally and numerically. At first, an alternative methodology in long wave physical modeling is presented by means of a set of pipe pumps forcing the inflow of a ...
  • Optimization of novel phase separating IBS process 
    Jupé, Marco; Willemsen, Thomas; Malobabic, Sina; Schuba, Kornelia; Ristau, Detlev (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    During the last years, optical low loss components gained more and more industrial interest and led to novel approaches for the production in optical coating technology. The application of filtered deposition technologies ...
  • Opto-Thermal simulation model for optimizing laser-excited remote phosphor systems 
    Chatzizyrli, Elisavet; Tinne, Nadine; Lachmayer, Roland; Neumann, Jörg; Kracht, Dietmar (Bellingham, Wash. : SPIE, 2018)
    A new family of lighting products is developed as laser diodes replace LEDs in the remote phosphor configuration. The resulting lighting systems, also known as laser-excited remote phosphor systems, exhibit advanced ...
  • Physical modeling of scour around tripod foundation structures for offshore wind energy converters 
    Stahlmann, Arne; Schlurmann, Torsten (Reston : American Society of Civil Engineers, 2010)
    As a step to further develop the share of renewable energies, the first German offshore test site alpha ventus has been installed in the North Sea in 2009 in water depths of 30 m, where experience shall be gained and made ...
  • Simulation in thin film technology 
    Turowski, Marcus; Jupé, Marco; Ehlers, Henrik; Melzig, Thomas; Pflug, Andreas; Ristau, Detlev (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    Simulation and modeling find more and more their way into thin film technology. Beside theoretical models for layer design, pre-production design analysis, and real time process control, atomistic simulation techniques ...
  • What determines the differences found in forest edge flow between physical models and atmospheric measurements? - An LES study 
    Kanani, Farah; Träumner, Katja; Ruck, Bodo; Raasch, Siegfried (Stuttgart : Gebrüder Borntraeger Verlagsbuchhandlung, 2014)
    A recent study has shown that Doppler lidar is a state-of-the-art method to obtain spatially and temporally resolved flow fields in forest edge flow regimes. In that study, the general flow features observed by lidar were ...