Results 31 to 40 of about 40,881 (309)
Active Reduction of Apparent Cable Capacitance
Sensors, 2023 This paper presents a method for reducing apparent cable capacitance seen by sensors. The proposed method is designed for sensing in extreme environments including ultra-high temperatures, but can be applied in benign environments as well.
Alexander Melin +2 more
doaj +1 more source
Impact of the surface roughness on the electrical capacitance [PDF]
Microelectronics Journal, 2006 A new hybrid approach consists to use the advantages of both systems namely the high geometric aspects of the electrodes of the ultracapacitor and the high dielectric strength of polymer materials used in dielectric capacitors. The surface roughness of the electrodes of the ultracapacitor is manufactured with nano-porous materials; activated carbon and
A. Albina +5 more
openaire +3 more sources
Non-destructive detection of CMAS damage on thermal barrier coatings using AC impedance technique
Mechanical Engineering Journal, 2016 Thermal barrier coatings (TBCs) on high temperature components in gas turbine engines are in some cases damaged by calcium-magnesium-alumino-silicates (CMAS) resulting from the ingestion of siliceous minerals at high temperatures exceeding 1200°C.
Yuki HAYASHI +2 more
doaj +1 more source
Experimental Analysis on the Dependence of the Capacitance of Magnetorheological Fluids on Frequency
Frontiers in Materials, 2022 The capacitance characteristics of magnetorheological fluids (MRFs) were studied experimentally based on simulation analysis. The nonlinear relationship between the capacitance of MRFs and electric field frequency was measured by the self-made circuit ...
Xuli Zhu +5 more
doaj +1 more source
Charge storage mechanism in nanoporous carbons and its consequence for electrical double layer capacitors [PDF]
, 2010 Electrochemical capacitors, also known as supercapacitors, are energy storage devices that fill the gap between batteries and dielectric capacitors. Thanks to their unique features, they have a key role to play in energy storage and harvesting, acting ...
Gogotsi, Yury +3 more
core +1 more source
A Mixed Normalization Capacitance Model for Electrical Capacitance Tomography [PDF]
Proceedings of the 2nd International Conference on Advances in Mechanical Engineering and Industrial Informatics (AMEII 2016), 2016 Electrical capacitance tomography (ECT) is a technique developed in recent 30 years, which aims to measure multi-phase flow. The image reconstruction for ECT is an inverse problem to find the permittivity distribution in a pipe. The normalized capacitance measurements are needed during the process of image reconstruction.
Qin Zhang, Feng Zhu, Lifeng Zhang
openaire +1 more source
Electrical capacitance tomography with square sensor
Electronics Letters, 1999 Electrical capacitance tomography (ECT) with circular sensors has previously been investigated. For some industrial applications such as circulating fluidised beds, square sensors are required. Research into this specific area has been carried out for the first time. To generate sensitivity maps, the Laplace equation is solved using a finite difference
Yang, W.Q., Liu, S.
openaire +5 more sources
Minimization of the Decoupling Circuit (DC-Link) in Induction Motors
Applied Sciences, 2023 There is currently a growing interest in replacing the internal combustion engine with electric motors in transportation applications. However, there are different problems related to electric motors for this application. One of them is the oversizing of
Luis Mauricio Carrillo-Santos +5 more
doaj +1 more source
1.6-kV 1.5-kA GaAs Avalanche Semiconductor Switch Triggered by 4 μJ Laser Diode
IEEE Journal of the Electron Devices Society, 2020 A current of 1.54 kA was obtained under a bias voltage of only 1.6 kV by employing a single photoconductive semiconductor switch (PCSS) excited by a laser diode (LD) with energy of 4 μJ.
Cheng Ma +4 more
doaj +1 more source
Electrical Capacitance Tomography With Differential Sensor
IEEE Sensors Journal, 2015 In electrical capacitance tomography, capacitance changes are used to determine the permittivity distribution in the imaging area. However, the changes are small compared to the standing capacitances, e.g. usually in the order of 10~30%. For a single channel capacitance sensor, a differential configuration having a redundant pair of electrodes can be ...
Ziqiang Cui, Huaxiang Wang, Wuliang Yin
openaire +3 more sources