scholarly journals Parameters of Nanosecond Overvoltage Discharge Plasma in a Narrow Air Gap between the Electrodes Containing Electrode Material Vapor

2018 ◽  
Vol 63 (9) ◽  
pp. 790
Author(s):  
O. K. Shuaibov ◽  
O. Y. Minya ◽  
M. P. Chuchman ◽  
A. O. Malinina ◽  
O. M. Malinin ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Electrode Material ◽  
Particle Concentration ◽  
Discharge Plasma ◽  
Simulation Method ◽  
Air Gap ◽  
Copper Vapor

Parameters of the nanosecond overvoltage discharge plasma in an air gap of (1÷5) × 10−3 m between the electrodes, which contains the vapor of an electrode material (Zn, Cu, Fe) injected into plasma due to the ectonic mechanism, have been studied. The dependences of those parameters on the ratio E/N between the electric field strength E and the particle concentration N in the discharge are calculated for the “air–copper vapor” system, by using the numerical simulation method.

Water-Activated Bacterial Cellulose-Based Electrorheological Fluids and Electromechanical Response of Artificial Muscle Based on Electrorheological Fluids and Siloxane Gel

2009 ◽  
Vol 87-88 ◽  
pp. 143-148
Author(s):  
Nai Xu ◽  
De Min Jia
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Water Content ◽  
Bacterial Cellulose ◽  
Yield Stress ◽  
Particle Concentration ◽  
Electrorheological Fluids ◽  
Water Yield ◽  
Composite Gel

Electrorheological (ER) characteristics of ER fluids (ERF) containing bacterial cellulose (BC) particles in silicone oil was investigated as a function of particle water content, DC electric field strength and particle concentration. It was found that the existence of water in BC particles strongly influenced the performance of water-activated ERF based on BC particles. Around 8.8 wt% water, yield stress reached its maximum valve of 1118 Pa after which it decreased with increasing water content. At the same water content, yield stress increased linearly with increasing in either electric field strength or particle concentration. The ERF based on BC particles was introduced into the poly (dimethylsiloxane) (PDMS) gels to prepare electric field sensitive composite gel. Electric fields were applied to these composite gels using flexible electrodes. Compressions of these gels with varying PDMS/ERF ratios were confirmed by the electrode displacement. It was found that 50/50 PDMS/ERF gel exhibited the maximum displacement of 102um at 2 kV/mm electric field.

Electrorheological Response of Polyaniline Particles Embedded in Cross-Linked Poly(Dimethyl Siloxane) Networks

Materials ◽  
2005 ◽  
Author(s):  
Piyanooth Hiamtup ◽  
Anuvat Sirivat
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Crosslink Density ◽  
Particle Concentration ◽  
Shear Mode ◽  
Zero Field ◽  
Dimethyl Siloxane ◽  
The Matrix ◽  
Electromechanical Responses

Electrorheological characteristics of poly (dimethyl siloxane) (PDMS) networks containing camphorsulfonic acid (CSA) doped-polyaniline (PANI) particles were investigated. Samples were prepared by dispersing fine polyaniline particles into cross-linked PDMS. Rheological properties of the PANI/PDMS blends were studied in the oscillatory shear mode in order to study the effects of electric field strength, crosslink density of the matrix, particle concentration, and operating temperature on their electromechanical responses. The electrostriction of the blends were observed as a result of an attractive force among polarized particles embedded in the network. The sensitivity values of blends are defined as the storage moduli at any applied electric field subtracted by those values at zero electric field, and divided by the moduli at zero field. They were found to increase about 10-50% when electric field strength was increased to 2 kV/mm. These moduli values increased with particle concentration and temperature but they decreased with crosslink density of the matrices.

scholarly journals Dielectric body with arbitrary shaped and positioned cavity in homogeneous transversal electric field

2004 ◽  
Vol 1 (2) ◽  
pp. 175-186 ◽  
Author(s):  
Mirjana Peric
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Simulation Method ◽  
Charge Simulation Method ◽  
Dielectric Body ◽  
Electrical Field ◽  
Transversal Electric

This paper presents an application of Charge Simulation Method for calculation of the electric field strength and the potential in the arbitrary shaped and positioned cavity of the dielectric body. The dielectric body can also have an arbitrary, but known shape. Several examples of the dielectric body with the cavity are presented. The whole system is in the homogeneous transverse electrical field. The results obtained in this way have been compared to the results obtained by the program?s packages: Bela 1.0 and Quickfield 4.2 (Student?s Edition).

Study on Distribution Model of Electric Field for 220 kV Transmission Lines and Implement

2013 ◽  
Vol 860-863 ◽  
pp. 2315-2319
Author(s):  
Guang Zhou Zhang ◽  
Mu Li ◽  
Gong Da Zhang ◽  
Hu Zhang ◽  
Shu Bo Fang
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Transmission Line ◽  
Electric Field Strength ◽  
Transmission Lines ◽  
Simulation Method ◽  
Distribution Model ◽  
Charge Simulation Method ◽  
Power Frequency ◽  
Made In

For studying the environment of power frequency electric field near the transmission line, the electric field model of 220kV transmission line was made in charge simulation method. Using the model, the electric field strength nearby the ground that under the lines was calculated and the distribute curves were drew in MATLAB language. The results showed that increasing the height of the conductors to ground, the electric field strength at the same point becomes lower.

Electrorheological Fluid Hysteresis

Materials ◽  
2005 ◽  
Author(s):  
Young Dae Kim ◽  
Daniel De Kee
Keyword(s):  
Shear Rate ◽  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Particle Concentration ◽  
Electrorheological Fluid ◽  
Particle Structure ◽  
Hysteresis Behavior ◽  
Precise Control ◽  
Er Fluids

Electrorheological (ER) fluids are suspensions of polarizable particles dispersed in insulating liquids. They exhibit a rapid and reversible transition from a liquid-like to a solid-like state upon the application of an electric field. The observed shear stress - shear rate hysteresis makes the precise control of the ER mechanical devices very difficult. Hysteresis behavior of TiO2 ER fluids were observed by varying particle concentration, electric field strength, maximum shear rate, and the time of hysteresis loop. In the absence of an electric field, the stress level of the up curve exceeds that of the down curve. The presence of an electric field, reverses this trend. The extent of hysteresis becomes more significant with increasing electric field strength, particle concentration, and maximum shear rate. Hysteresis behavior of TiO2 ER fluids seems to arise mainly due to the change of the particle structure during shearing. To describe the complex rheological behavior of ER fluids, a kinetic theory is presented. Model predictions show qualitative agreement with the experimental hysteresis data.

Optical Measurement of the Electric Field Strength in a Gel Insulator

2016 ◽  
Vol 136 (10) ◽  
pp. 1420-1421
Author(s):  
Yusuke Tanaka ◽  
Yuji Nagaoka ◽  
Hyeon-Gu Jeon ◽  
Masaharu Fujii ◽  
Haruo Ihori
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Optical Measurement
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