PROJECT TITLE :

Arc location predictor on a 2D composite surface in vacuum

ABSTRACT:

Conductors, insulators and semiconductors behave differently in the surroundings containing charged particles. For any sample substrate that consists either of these two or more incorporates a specific charging property. In the charged surroundings, a differential potential is made up on metal and insulators kept adjacent to every different. If the surface potential exceeds the specified threshold voltage, a breakdown occurs on the substrate's surface that results into unleash of warmth and lightweight energy. This is termed as an electrostatic discharge or an arc. Thus, discharges deteriorate the surface properties of the substrate and reduce its practical life. Hence, an understanding of such charging-arcing phenomenon on varied substrate's surface is important. For this purpose, an obsessive facility for making charged atmosphere using electron gun and plasma supply is developed and numerous parameters of discharge are measured and analyzed. As the scale of the substrate may be a major concern of performing experiments, an algorithm for predicting arc current waveform is developed simultaneously. This software relies on the fundamental details provided by the user. It is capable of generating a library of arc current waveforms on each arc favorable location. A dedicated database is obtained for each substrate having different geometrical shape. Generated arc waveform at any specified location is a perform of its distance from substrate's edges. It is primarily based on 'arc image pixel manipulation technique'. Both experimental and simulated results are obtained for smaller sample substrates initially. Software generated waveform and actual waveform are quite comparable with every other. On successfully identifying arc location on the surface using the algorithm, use of CCD camera for the identical will be avoided. A unique approach for reproducing a different waveform at each location by breaking the symmetry of the substrate is additionally mentioned within the paper.