Results 141 to 150 of about 113,850 (277)

Effect of initial stress on electro-magneto-thermoelastic semiconductor materials exposed to a pulsed lasers due to the interaction between electrons and holes. [PDF]

Sci Rep
Alarfaj KK.
europepmc   +1 more source

A Dual‐Frequency Sensitivity Model for Optical Fibre Ultrasonic Sensors in Power Transformer Partial Discharge Detection

High Voltage, EarlyView.
ABSTRACT The detection of partial discharges (PD) on the power transformer tank demands higher sensitivity in ultrasonic detection. To target the detection frequency band for sensor optimisation and enhance sensitivity, this paper presents a dual‐frequency sensitivity model for optical fibre ultrasonic sensors.
Sihan Wang, Jihang Sun, Jialin Wang, Bin Wei, Guoming Ma   +4 more
wiley   +1 more source

Expert Knowledge-Infused Learning for Indoor Radio Propagation Environment Digital Twins. [PDF]

Sensors (Basel)
Wang H, Xu L, Zhang Y, Peng T, Wang W.
europepmc   +1 more source

Diffraction problem of electromagnetic wave propagation on system of arbitrary located screens and bodies

Физика волновых процессов и радиотехнические системы, 2017
Diffraction problem of electromagnetic wave propagation on system of arbitrary located screens and bodies is considered. Uniqueness and solvability theorems are proved. The problem is reduced to the integro-differential equations in Sobolev spaces. Solvability of system of integro-differential equations is proved also.
openaire   +1 more source

Investigating Dynamic Characteristics of Cavitation in Insulating Oil Microgaps Under Vibration: Theoretical Analysis and Experimental Observation

High Voltage, EarlyView.
ABSTRACT The internal pressure fluctuations caused by vibration in oil‐immersed electrical equipment can initiate bubbles within narrow oil gaps, reducing the electrical strength of equipment and giving rise to the problem of abnormal gas production in oil‐immersed equipment.
Jiajun Yang, Tao Zhao, Yunpeng Liu
wiley   +1 more source

Modelling the impact of energetic electrons on electron-acoustic instabilities and HF/UHF wave propagation in the ionospheric-like plasmas. [PDF]

Sci Rep
Ebadi D, Barzegar S.
europepmc   +1 more source

Arc Resistance Enhancement of Converter Transformer Tank Through Structural Improvements: Simulation and Experimental Validation

High Voltage, EarlyView.
ABSTRACT Currently, limited research exists on the structural response and protection methods of the converter transformer tank for ± 800 kV ultra‐high voltage direct current transmission project to high energy arc faults. This research investigates the dynamic response and the vulnerable areas of the ultra‐high voltage converter transformer under the ...
Ke Wang, Shuqi Zhang, Yikun Zhao, Yichen Wang, Zongliang Zhang, Jinhua Zhang   +5 more
wiley   +1 more source

Primordial Media: The Shrouded Realm of Composite Materials. [PDF]

ACS Photonics
Podolskiy VA, Narimanov E.
europepmc   +1 more source

Signal Extraction and Clustering of Partial Discharge in Motor Insulation Using Temporal Correlation‐Based Clustering

High Voltage, EarlyView.
ABSTRACT As one of the important links in energy transition and global energy interconnection, electric vehicles (EVs) are becoming increasingly major research topics in the field of energy. Partial discharge (PD) identification under repetitive impulsive voltages plays a pivotal role in evaluating the health of electric vehicle (EV) motor insulation ...
Li Wang, Jia‐Wei Zhang, Haikun Shang, Yu Zhao, Yufei Wang, Chen Song, Jianwei Zhang, Fouad Belhora   +7 more
wiley   +1 more source

Wave Tracing: Generalizing The Path Integral To Wave Optics

Computer Graphics Forum, EarlyView.
Abstract Modeling the wave nature of light and the propagation and diffraction of electromagnetic fields is crucial for the accurate simulation of many phenomena, yet wave simulations are significantly more computationally complex than classical ray‐based models.
Shlomi Steinberg, Matt Pharr
wiley   +1 more source