Results 81 to 90 of about 11,968 (212)
Charge distributions near metal-dielectric interfaces before and after dielectric surface flashover [PDF]
A technique was developed for measuring surface charge distribution near interfaces without placing any measuring apparatus near the face of the samples.
Robinson, J. W.
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Electrical Circuit Flashover Model of Polluted Insulators under AC Voltage Based on the Arc Root Voltage Gradient Criterion [PDF]
In order to study the flashover mechanism of polluted insulators under AC voltage, a new arc propagation criterion which is based on an arc root voltage gradient is proposed.
Alston +13 more
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An Underappreciated Radiation Hazard from High Voltage Electrodes in Vacuum
The use of high voltage (HV) electrodes in vacuum is commonplace in physics laboratories. In such systems, it has long been known that electron emission from an HV cathode can lead to bremsstrahlung X-rays; indeed, this is the basic principle behind the ...
DeMille, David +8 more
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Sessile water droplets on insulating surfaces subject to high AC stress effect of contact angle [PDF]
Surface pollution of outdoor high-voltage insulators is an important cause of flashover. We have undertaken an experimental study of electrical breakdown at the edges of a sessile water droplet on a planar, polymeric, insulating surface when subject to ...
Crichton, B.H. +3 more
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Flashover Features in Aircraft Cargo Compartment at Low Pressure
The flashover mechanism in an aircraft cargo compartment under low pressure was investigated in this study. A series of fire experiments were conducted in a scale model of a one-quarter volume FAA standard aircraft cargo compartment at 96 kPa and 60 kPa.
Zitong Li +3 more
doaj +1 more source
Under dc electric field, pollution may be more easily deposited around insulator string caps and pins, distributing non-uniformly on its inner and outer parts, and presenting ring-like shape.
Zhijin Zhang +6 more
doaj +1 more source
Characteristics of EMI generated by negative metal-positive dielectric voltage stresses due to spacecraft charging [PDF]
Charging of spacecraft surfaces by the environmental plasma can result in differential potentials between metallic structure and adjacent dielectric surfaces in which the relative polarity of the voltage stress is either negative dielectric/positive ...
Chaky, R. C., Inouye, G. T.
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Dielectric molding apparatus Patent [PDF]
Dielectric apparatus for heating, fusing, and hardening of organic matrix to form plastic material into shaped ...
King, C. B., Menges, M. J., Swann, R. T.
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Creeping flashover easily occurs at the interface between oil and pressboard in transformer and thus results in outage of power transmission system. Investigations have shown that creeping flashover characteristics at oil/pressboard interface can be ...
Meng Huang +5 more
doaj +1 more source
Laboratory test methods for evaluating the fire response of aerospace materials [PDF]
The test methods which were developed or evaluated were intended to serve as means of comparing materials on the basis of specific responses under specific sets of test conditions, using apparatus, facilities, and personnel that would be within the ...
Hilado, C. J.
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