A. Elmoursi

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The authors present a numerical technique based on the combined method of charge simulation and the method of characteristics to evaluate fields in unbounded geometries. The numerical procedure utilizes a nonrigid grid structure which, after convergence to a self-consistent solution, is a map of the field lines and equipotential contours. The numerical(More)
  • A. Elmoursi
  • Conference Record of the IEEE Industry…
  • 1989
A numerical model that determines the electrical characteristics of a bell-type electrostatic painting system is presented. The model is capable of handling the complex geometries of practical sprayers and accounts for the space-charge effect of charged paint droplets. The influence of aerodynamic forces in tracing droplet trajectories is considered. As a(More)
A low cost and reliable high voltage pulse modulator is described whose design is based on R-C circuits and which uses triggered spark gaps for switching. Oscilloscope photographs of the output pulse indicate the success of this design in fulfilling the waveform requirements. Furthermore, this pulse modulator was used in the pulse implantation of aluminum(More)
This paper explores the use of deformation machining technology (DMT), originally developed at Bauman Moscow State Technical University, to make electrical joints and compare their performance to bolted and welded electrical joints. The DMT process is used to generate tooth-like profiles on two opposing surfaces that make the electrical joint, which are(More)
The field distribution of a ¿uniform field¿ electrode system which is usually employed in studying the particle initiated breakdown in SF6 and other compressed gases is analyzed by using the charge simulation method. The results indicate that field distribution of such a system is non-uniform under certain conditions and needs careful evaluation.
This is the second part of the paper related to the exploration of deformation machining technology (DMT), originally developed at Bauman Moscow State Technical University, as it may apply to making electrical joints and comparing their performance to bolted and welded electrical joints. The DMT process is used to generate tooth-like profiles on two(More)
In situations where paint resistivity is low, as for waterborne paints, it is not possible to use conventional electrostatic painting systems without isolating the sprayer, the fluid-handling system, and the paint containers. An alternate technique is to apply high voltage to the workpiece and ground the sprayer. The authors evaluate the electrical(More)
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