Results 261 to 270 of about 73,716 (295)
Some of the next articles are maybe not open access.
Journal of Physics D: Applied Physics, 2023
Abstract We report several effects found in reactive bipolar high-power impulse magnetron sputtering (abbreviated as bipolar HiPIMS or BPH) discharges at the substrate level. The role of the negative peak current and the positive pulse voltage, U
Michiels, Matthieu +5 more
openaire +2 more sources
Abstract We report several effects found in reactive bipolar high-power impulse magnetron sputtering (abbreviated as bipolar HiPIMS or BPH) discharges at the substrate level. The role of the negative peak current and the positive pulse voltage, U
Michiels, Matthieu +5 more
openaire +2 more sources
2015 IEEE Eindhoven PowerTech, 2015
High voltage bushing forms an essential part of a power transformer and its insulation condition is of high importance in a transformer's reliability. Transformer failure statistics indicate considerable contribution from bushing failures, which makes the monitoring of power transformer bushings essential.
Roya Nikjoo, Nathaniel Taylor, Hans Edin
openaire +1 more source
High voltage bushing forms an essential part of a power transformer and its insulation condition is of high importance in a transformer's reliability. Transformer failure statistics indicate considerable contribution from bushing failures, which makes the monitoring of power transformer bushings essential.
Roya Nikjoo, Nathaniel Taylor, Hans Edin
openaire +1 more source
Electrical Engineering, 2016
In a previously published work, performances of three practical earthing systems consists of 2, 3 and 4 rod-bed electrodes buried at the same site, thus the same soil resistivity were investigated. It was found that the degree of reduction of the earth resistance values is the highest in the poor earthing systems (2 rod electrodes).
Abdullah, Saleha +2 more
openaire +2 more sources
In a previously published work, performances of three practical earthing systems consists of 2, 3 and 4 rod-bed electrodes buried at the same site, thus the same soil resistivity were investigated. It was found that the degree of reduction of the earth resistance values is the highest in the poor earthing systems (2 rod electrodes).
Abdullah, Saleha +2 more
openaire +2 more sources
IEEE Transactions on Plasma Science, 2016
The objective of this paper is to investigate an influence of high-frequency high-voltage impulse conditioning on the back-to-back capacitor bank switching performance of vacuum interrupters (VIs). Nine identical 7.2-kV VIs were tested by 80 CO operations after the proposed conditioning. Test inrush currents were set to 0-, 2-, and 5-kA peak.
Yingyao Zhang +6 more
openaire +1 more source
The objective of this paper is to investigate an influence of high-frequency high-voltage impulse conditioning on the back-to-back capacitor bank switching performance of vacuum interrupters (VIs). Nine identical 7.2-kV VIs were tested by 80 CO operations after the proposed conditioning. Test inrush currents were set to 0-, 2-, and 5-kA peak.
Yingyao Zhang +6 more
openaire +1 more source
AIAA Journal, 2015
A tunable diode laser-based H2O absorption diagnostic has been developed to characterize transient phenomena within the Stanford Expansion Tube Flow Facility. A measurement rate of 25 kHz was achieved to identify and investigate transient flow structures within the ∼600 μs facility test time.
Christopher L. Strand, Ronald K. Hanson
openaire +1 more source
A tunable diode laser-based H2O absorption diagnostic has been developed to characterize transient phenomena within the Stanford Expansion Tube Flow Facility. A measurement rate of 25 kHz was achieved to identify and investigate transient flow structures within the ∼600 μs facility test time.
Christopher L. Strand, Ronald K. Hanson
openaire +1 more source
Effect of Enhancement Materials When Mixed with Sand Under High Impulse Conditions
2006 IEEE 8th International Conference on Properties and applications of Dielectric Materials, 2006To date, there is no data describing the characteristics of enhancement materials mixed with soils under impulse conditions are published. In this research, it is aimed to investigate the characteristics of enhancement materials, copper sulphate (CuSO4 ) and sodium chloride (NaCl) mixed with soils under impulse ...
openaire +1 more source
Nondestructive Testing and Evaluation, 2012
This paper is devoted to the description of the double reflection type as an important basic case (as well as single reflection type) and gives some introduction to the phenomenology of elongated reflections in ground-penetrating radar (GPR) diagnostics of bituminous pavement. The single reflections correspond to simple velocity contrast between layers
Lech Krysiński, Jacek Sudyka
openaire +1 more source
This paper is devoted to the description of the double reflection type as an important basic case (as well as single reflection type) and gives some introduction to the phenomenology of elongated reflections in ground-penetrating radar (GPR) diagnostics of bituminous pavement. The single reflections correspond to simple velocity contrast between layers
Lech Krysiński, Jacek Sudyka
openaire +1 more source
2013 2nd International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST), 2013
The objective of this paper is to investigate back-to-back capacitor switching restrike characteristics of vacuum interrupters (VIs) after conditioning by using a series of high-frequency sub-microsecond voltage impulses. 7.2 kV VIs are conditioned by several hundreds of batches of sub-microsecond high voltage impulses (1000Hz, 0.1s). The peak value of
null He Yang +5 more
openaire +1 more source
The objective of this paper is to investigate back-to-back capacitor switching restrike characteristics of vacuum interrupters (VIs) after conditioning by using a series of high-frequency sub-microsecond voltage impulses. 7.2 kV VIs are conditioned by several hundreds of batches of sub-microsecond high voltage impulses (1000Hz, 0.1s). The peak value of
null He Yang +5 more
openaire +1 more source
Journal of Sound and Vibration, 1966
Abstract The pure tone and speech attenuation characteristics of V 51 R and Selectone-K earplugs have been measured in the laboratory, and their effects on speech communication have also been measured under field conditions of quiet and impulsive noise back grounds.
R.R.A. Coles, C.G. Rice
openaire +1 more source
Abstract The pure tone and speech attenuation characteristics of V 51 R and Selectone-K earplugs have been measured in the laboratory, and their effects on speech communication have also been measured under field conditions of quiet and impulsive noise back grounds.
R.R.A. Coles, C.G. Rice
openaire +1 more source
2001
15-18 OCT. 2001, CAPUA ITALY, ESA SP-
POZZI, AMILCARE, TOGNACCINI, RENATO
openaire +3 more sources
15-18 OCT. 2001, CAPUA ITALY, ESA SP-
POZZI, AMILCARE, TOGNACCINI, RENATO
openaire +3 more sources