Results 61 to 70 of about 67,105 (263)

Space charge characteristics and dielectric properties of PANI/PP‐g‐MAH/PP ternary composite

High Voltage
Space charge accumulation in polypropylene materials for direct current capacitor will accelerate the ageing of the materials, resulting in the degradation of their insulation properties.
Guochang Li, Tianzhen Liu, Zhenlu Gu, Xiaolong Chen, Beibei Sun, Yuanwei Zhu, Shengtao Li, Yanhui Wei   +7 more
doaj   +1 more source

Quantifying Electric Charge on Cap-Pin Glass Insulator: Investigating the Impact of Pollution through Simulation and Experimental Approaches

ENP Engineering Science Journal
The objective of this paper is to investigate the behavior of electric charges on cap-pin glass insulator under 50 Hz AC voltage. The study is conducted using COMSOL Multiphysics to understand the charge location, polarity, and parameters affecting their
Rabie Salhi, Abdelouahab Mekhaldi, Madjid Teguar, Omar Kherif   +3 more
doaj   +1 more source

Space charge accumulation in XLPE versus temperature and water content

Proceedings of the Nordic Insulation Symposium, 2018
The rate of accumulation and amount of space charge is dependent on several factors, including the electrical properties of the insulation material and the temperature of the insulation. Increased water content has been found to increase the conductivity of XLPE up to three times compared to that of dry XLPE, and is therefore also expected to affect ...
Torbjørn Andersen Ve, Frank Mauseth, Erling Ildstad   +2 more
openaire   +2 more sources

Low‐Temperature Imidization of Polyimides (PI) for Scalable Manufacturing of Flexible Wearable Electronics

Advanced Engineering Materials, EarlyView.
Low‐temperature imidization of PEG‐modified polyimide enables fully screen‐printed, roll‐to‐roll fabrication of flexible electrodes on PET substrates, delivering robust mechanical durability and reliable ECG/EMG signal performance for wearable electronics.
Akib Abdullah Khan, Jong‐Hoon Kim
wiley   +1 more source

Research progress on space charge measurement and space charge characteristics of nanodielectrics

IET Nanodielectrics, 2018
Since the proposal of the notion of nanodielectric, the space charge characteristics of nanodielectrics have been widely investigated. With the addition of nanoparticles, some nanodielectrics exhibit smaller space charge accumulation amount during the ...
Ya-Ni Wang, Ya-Lin Wang, Jian-Dong Wu, Yi Yin   +3 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Development of a novel signal restoration algorithm to eliminate the distorted components in space charge measurement excited by femtosecond laser irradiation

High Voltage
For the space charge measurement method with optical excitation for electrical insulation, the distortion of the excitation laser on the measurement signal and the accumulation of space charge have not been discussed before.
Tianrun Qi, Hanwen Ren, Haoyu Gao, Qingmin Li, Yidan Ma, Yiqun Ma, Tao Xiao   +6 more
doaj   +1 more source

Space Charge Accumulation and Decay in Dielectric Materials with Dual Discrete Traps

Applied Sciences, 2019
Charge trapping and de-trapping properties can affect space charge accumulation and electric field distortion behavior in polymers. Dielectric materials may contain different types of traps with different energy distributions, and it is of interest to ...
Zhaoliang Xing, Chong Zhang, Haozhe Cui, Yali Hai, Qingzhou Wu, Daomin Min   +5 more
doaj   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source