Results 21 to 30 of about 839,437 (238)

Blue and white light emission from zinc oxide nanoforests

open access: yesBeilstein Journal of Nanotechnology, 2015
Blue and white light emission is observed when high voltage stress is applied using micrometer-separated tungsten probes across a nanoforest formed of ZnO nanorods.
Nafisa Noor   +6 more
doaj   +1 more source

Effect Model of Stress and Plastic Deformation on Conductivities of Various Magnetic Materials

open access: yesIEEE Access, 2020
In order to study the effect of stress/plastic deformation on electrical conductivity of various magnetic materials, the electrical conductivity of silicon steel, carbon steel and aluminum alloy of different resistance coefficients at the stage of ...
Fuchen Zhang   +3 more
doaj   +1 more source

Effect of DC Pre-stress on Space Charge and Electrical Tree in XLPE with Needle-Plate Electrodes

open access: yesZhongguo dianli, 2021
Space charge is one of the main factors that affect the electrical tree characteristics of HVDC cable insulation. Based on the bipolar charge transport model, this paper simulates the space charge distribution characteristics of the two-dimensional ...
Xiaobin XU   +5 more
doaj   +1 more source

Consideration of the spatial orientation of magnetic field quantities and tensile mechanical stress in the Finite Element Analysis of electrical machines [PDF]

open access: yesArchives of Electrical Engineering, 2022
Due to speed-dependent centrifugal forces, the support of the torque, static mechanical stress introduced by manufacturing processes the laminated core of rotating electrical machines is exposed to considerable mechanical stress.
Benedikt Schauerte   +3 more
doaj   +1 more source

Thermo-mechanical stress of bonded wires used in high power modules with alternating and direct current modes [PDF]

open access: yes, 2012
Today, power electronic reliability is a main subject of interest for many companies and laboratories. The main process leading to the IGBT failure is the cycling thermal stress.
Medjahed, Hassen   +2 more
core   +4 more sources

Stress-dependent electrical transport and its universal scaling in granular materials [PDF]

open access: yes, 2018
We experimentally and numerically examine stress-dependent electrical transport in granular materials to elucidate the origins of their universal dielectric response.
Gan, Yixiang   +3 more
core   +3 more sources

Study on Electrophysiological Signal Monitoring of Plant under Stress Based on Integrated Op-Amps and Patch Electrode

open access: yesJournal of Electrical and Computer Engineering, 2017
Electrophysiological signal in plant is a weak electrical signal, which can fluctuate with the change of environment. An amplification detection system was designed for plant electrical signal acquisition by using integrated op-amps (CA3140, AD620, and ...
Weiming Cai, Qingke Qi
doaj   +1 more source

Modeling Methods of Static Hysteresis Characteristics of Electrical Steel Sheets under Stress

open access: yesZhongguo dianli, 2020
Accurate and rapid simulation of the hysteresis characteristics of magnetic materials under different stresses is of great significance to design electrical equipment cores that withstand mechanical stress.
Yiling LI, Lin LI, Ren LIU
doaj   +1 more source

Pressure sensing of liquid metal-based fiber arrays

open access: yesAIP Advances, 2021
The GaIn based room temperature liquid metal (LM) is a potential material for sensing applications due to its good fluidity and excellent conductivity. The change in volume or shape substantially modifies the LM electrical properties, especially in the ...
Lei Wang   +3 more
doaj   +1 more source

Residual stress evaluation by Barkhausen signals with a magnetic field sensor for high efficiency electrical motors

open access: yesAIP Advances, 2018
The iron loss of industrial motors increases by residual stress during manufacturing processes. It is very important to make clear the distribution of the residual stress in the motor cores to reduce the iron loss in the motors.
Yuji Tsuchida, Masato Enokizono
doaj   +1 more source

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