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In order to study influences of contact opening speeds on break arc behaviors of Ag and AgSnO2 contacts in air, break operations of a DC inductive (L=20mH) current up to several amps at 14V were conducted with several different contact opening speeds in the range from 0.5 mm/s to 20 mm/s in a switching mechanism in the uncontrolled laboratory atmosphere. Durations of break arc discharges were measured,...
Cork is a natural cellular material and is the outer bark of the Mediterranean tree Quercus Suber-L. Its many different applications derive from the unique set of properties: cork is a good thermal, vibratic and acoustic insulator, prevents fire propagation, it is impervious to water. In this study shows that the main problem for charge storage during long periods is related to the small amount of...
To extract wave direction from sea surface images, a new method is proposed, which is based on ridgelet transform. Due to the linear feature of sea wave images, this method first provides a pre-processing to take a disk shape area from the middle of the wave image. Then the wave direction which has an associated ±180 degree ambiguity is calculated using ridgelet transform. Meanwhile, a timestack image...
Conduction processes in polyethylene under high field depend upon the electrode-polymer interface and the ambient atmosphere. It was reported last year1 that the conduction of low density and high density polyethylene is sensitive to Shottky type emission from the cathode in air as well as in vacuum except in the presence of air between electrodes and polymer. This report brings further details concerning...
There are several reasons for studying the electrical behavior of gases at high pressure. Since the strength increases as the pressure is raised there is obvious industrial interest, but there is also great interest in determining whether the Townsend mechanisms of breakdown and Paschen's law are maintained as the gas density increases. The increased strength also leads to the possibility of field...
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