Search Results - "Uhrlandt, D."

Fluid Modelling of DC Argon Microplasmas: Effects of the Electron Transport Description by Baeva, M., Loffhagen, D., Becker, M. M., Uhrlandt, D.

“…The paper gives an overview of the influence of the description of the electron transport properties on the characteristics of a DC microplasma in argon at…”
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Observed Oscillating Anodic Plasma Plume Phenomena in High Current Vacuum Arcs by Gonzalez, Diego, Franke, Steffen, Gortschakow, S., Methling, R., Uhrlandt, D.

“…The impact of current density on the anode attachment characteristics of high current vacuum arcs was investigated using high-speed imaging techniques. The…”
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Unified Non-equilibrium Modelling of Tungsten-Inert Gas Microarcs in Atmospheric Pressure Argon by Baeva, M., Loffhagen, D., Uhrlandt, D.

“…Analysis of the plasma parameters of a tungsten-inert gas microarc with a length of 0.4 mm is carried out by means of a unified one-dimensional model. The…”
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Nonequilibrium simulation analysis of the power dissipation and the pressure produced by TIG welding arcs by Baeva, M., Uhrlandt, D.

“…The recently developed novel nonequilibrium model of TIG arcs is applied to study in detail the momentum balance and pressure establishment in the arc region…”
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An improved arc model for vacuum arc regarding anode spot modes by Khakpour, A., Franke, St, Methling, R., Gortschakow, S., Uhrlandt, D., Imani, M. T.

“…This paper introduces an improved arc model for vacuum arcs. In this model, the impact of different high-current anode modes is considered. An existence…”
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A simplified voltage model in GMAW by Zhang, G., Goett, G., Uhrlandt, D., Lozano, Ph, Sharma, R.

“…The relation between the voltage and the arc length in gas metal arc welding (GMAW) is an important characteristic. It determines the power transfer to a large…”
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Study of flux-cored arc welding processes for mild steel hardfacing by applying high-speed imaging and a semi-empirical approach by Wilhelm, G., Gött, G., Uhrlandt, D.

“…Arc welding processes with flux-cored wire electrodes are often applied for steel hardfacing. The optimal choice of the process parameters is a key issue for…”
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Study of High-Current Anode Modes for Various Electrode Materials by Gortschakow, S., Gonzalez, D., Franke, St, Methling, R., Uhrlandt, D., Boening, S, Boening, M.

“…Electrodes made from CuCr alloy with the same composition, but different thermal processing have been analysed in a vacuum interrupter model at AC currents up…”
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Spectroscopic Investigation of DC-arcs between Parallel Rails under the Influence of External Magnetic Fields by Gonzalez, D., Methling, R., Gortschakow, S., Franke, St, Uhrlandt, D.

“…The effect of transverse magnetic fields on the spectral characteristics of low current DC-arcs on air was investigated. The setup consists of two parallel…”
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Investigation of the Attachment Process of Anode Spot Type 2 and Anode Plume of Vacuum Arcs Depending on Current Density by Gonzalez, D., Gortschakow, S., Franke, St, Methling, R., Uhrlandt, D.

“…The characteristics of the discharge mode transitions of vacuum arcs on Cu-Cr electrodes as a function of current density was investigated using high-speed…”
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Influence of ignition position on the properties of vacuum arc generated by switching RMF contacts by Gortschakow, S., Gonzalez, D., Methling, R., Franke, St, Uhrlandt, D., Lawall, A., Taylor, E. D., Graskowski, F.

“…This contribution reports on the influence of the arc ignition position on the behavior and properties of switching arc between the RMF contacts. A pulsed AC…”
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Magnetohydrodynamic modeling for an OVD reactor setup by Baeva, M., Uhrlandt, D.

“…A three-dimensional magnetohydrodynamic model of an inductively coupled plasma depositor has been developed and applied to describe the process of outside…”
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Spectrally and spatially resolved imaging of an anode flare in the initial stage of a vacuum arc discharge by Methling, R., Popov, S., Batrakov, A., Uhrlandt, D.

“…Dynamics of the anode spot generation in the initial stage of vacuum arc with a short gap with gallium-indium liquid-metal electrodes was investigated. Using a…”
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Fluid Modeling and Analysis of the Constriction of the DC Positive Column in Argon by Gnybida, M., Loffhagen, D., Uhrlandt, D.

“…The glow-to-arc transition of the positive column of a dc discharge in argon in the course of constriction has been investigated on the basis of a…”
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Spectroscopic Study of a Single Vacuum-Arc Cathode Spot by Popov, S.A., Batrakov, A.V., Methling, R., Uhrlandt, D., Weltmann, K.-D.

“…The cathode-spot plasma in spark and arc stages of a vacuum discharge was studied spectroscopically. A single spot was generated with high reproducibility in a…”
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Time-Resolved Spectroscopy of Single Cathode Spots: Comparison of Cathode and Anode Position by Methling, R., Popov, S., Batrakov, A., Uhrlandt, D., Weltmann, K.

“…Optical emission of a single cathode spot in vacuum was studied to improve the understanding of cathode spot initiation and dynamics. Discharges with high…”
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In situ Measurement of Capacitors under High Hydrostatic Pressure by Bekker, M., Pieterse, P.J., Uhrlandt, D.

“…The application of pressure tolerant medium- and high voltage electronic circuits in deep-sea environments, requires pretesting of all electrical or electronic…”
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Progress of the Electron Kinetics in Spatial and Spatiotemporal Plasma Structures by Winkler, R., Arndt, S., Loffhagen, D., Sigeneger, F., Uhrlandt, D.

“…A brief introduction into the progress of the analysis of the electron kinetics in spatially one‐ and two‐dimensional steady‐state plasmas and in…”
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Relaxation of electrons in two space dimensions in space-charge confined plasmas by Uhrlandt, D., Arndt, S.

“…The relaxation of the electron component in a cylindrical DC column plasma is studied by solving the electron kinetic equation in two space dimensions. In…”
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Study on identifying GMAW process deviations by means of optical and electrical process data using ANN by Reisgen, U., Mann, S., Oster, L., Gott, G., Sharma, R., Uhrlandt, D.

“…In this study, different process deviations of gas metal arc welding were classified using transient optical and electrical process data by means of artificial…”
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