Results 41 to 50 of about 1,017,777 (303)

MAIN BIRD EXCREMENT CONTAMINATION TYPE CAUSING INSULATOR FLASHOVERS IN 110 kV OVERHEAD POWER LINES IN ESTONIA; pp. 211–224 [PDF]

Oil Shale, 2013
The study aims to elucidate which type of bird excrement contamina­tion causes insulator flashovers in 110 kV overhead power lines in Estonia. Laboratory wetting and bird streamer tests performed on naturally contaminated glass and composite insulators ...
PAUL TAKLAJA, Rein Oidram, JAAN NIITSOO, Ivo Palu   +3 more
doaj   +1 more source

Mechanical Properties of High-Temperature Vulcanized Silicone Rubber Under Acid-Fog With AC Energized

IEEE Access, 2022
Due to excellent anti-pollution performance, composite insulators have been widely used in transmission lines. However, composite insulators present various failures after long-term outdoor operation under environmental, mechanical, and electrical stress.
Zhijin Zhang, Guohui Pang, Xiaodan MA, Tian Liang, Xingliang Jiang   +4 more
doaj   +1 more source

Recycling alginate composites for thermal insulation

Carbohydrate Polymers, 2021
We present a new method for the total functional recycling of alginate-based composite materials made via ionotropic gelation. The original material, an alginate/fiberglass foam with thermal insulation characteristics, was produced following a patented process in which fiberglass waste is embedded into the polyanionic gel matrix, and the resulting ...
Matteo Cibinel, Giorgia Pugliese, Davide Porrelli, Lucia Marsich, Vanni Lughi   +4 more
openaire   +4 more sources

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Characteristics of powdered layer on silicone rubber surface

Journal of Materials Research and Technology, 2021
In recent years, varying degrees of surface pulverization had been found on composite insulators running for years in severe outdoor environment such as dry, high altitude, salt fog and intensive ultraviolet radiation.
Tian Liang, Zhijin Zhang, Xiaohong Ma, Yingzhu Xiang, Huan Huang, Xingliang Jiang   +5 more
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 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

Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals

Advanced Engineering Materials, EarlyView.
This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao, Sriram Subramanian, Gianluca Memoli   +2 more
wiley   +1 more source

Research on the long-time operation performance of composite insulator shed hydrophobicity under hydrothermal conditions

High Voltage, 2018
Due to excellent anti-pollution flashover performance, a composite insulator has become the most frequently and widely used insulator product in transmission lines.
Li Cheng, Shanfeng Shao, Sida Zhang, Ruijin Liao, Lijun Yang, Chenjun Guo   +5 more
doaj   +1 more source

Vapour sensing applications and electrical conduction mechanisms of a novel metal-polymer composite [PDF]

, 2003
A novel metal-polymer composite is presented, comprised of a micron-sized nickel powder dispersed within a silicone polymer matrix. The composite is intrinsically electrically insulating, but displays a dramatic increase in conductivity under compression,
Hands, Philip James Walton, Hands, Philip J.W.; id_orcid   +1 more
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