Results 11 to 20 of about 11,630 (246)

Three types of bidirectional leader development in triggered lightning flashes

open access: yesScientific Reports, 2023
Eight cases of bidirectional leader (BL) development in artificially triggered lightning flashes are reported with synchronous high-speed camera images and electric field signals.
Rui Su   +5 more
doaj   +1 more source

Enhancing the Output Performance of a Triboelectric Nanogenerator Based on Modified Polyimide and Sandwich-Structured Nanocomposite Film

open access: yesNanomaterials, 2023
Recently, scientists have been facing major obstacles in terms of improving the performances of dielectric materials for triboelectric nanogenerators. The triboelectric nanogenerator (TENG) is one of the first green energy technologies that can convert ...
Jiaheng Zhou   +10 more
doaj   +1 more source

Insulator fault feature extraction system of substation equipment based on machine vision

open access: yesIET Networks, EarlyView., 2022
Abstract The artificial intelligence technology and intelligent automation are more and more widely used, the insulators play a supporting and insulating role in the operation of the grid. The use of machine vision inspection technology to detect insulator faults has become an inevitable trend of the times.
Keruo Jiang   +4 more
wiley   +1 more source

Application of 3D scanning technology in Royal Malaysian Air Force Industrial Revolution 4.0‐based aircraft maintenance

open access: yesIET Networks, EarlyView., 2022
Abstract 3D scanning is rapidly becoming a key maintenance tool. Aerospace was a pioneer in adopting 3D scanning technology because aircraft manufacture and maintenance require precision. Monitoring deterioration, removing components for maintenance, and verifying covert operations are not practical or helpful without technology.
T. Nanthakumaran Thulasy   +4 more
wiley   +1 more source

Risk zoning of lightning disaster in Hubei Province based on projection pursuit method

open access: yes暴雨灾害, 2019
Using the cloud-ground lightning locating data from 2007 to 2017 and the thunderstorm day data from 1961 to 2003 in Hubei, we selected six lightning parameters such as thunderstorm day, cloud-ground lightning density, lightning current wave-head ...
Tianye YU   +3 more
doaj   +1 more source

Study of the B-Dot Sensor for Aircraft Surface Current Measurement

open access: yesSensors, 2022
The B-dot sensor is a type of Rogowski coil widely used in the measurement of current. However, the accuracy of the B-dot for measuring aircraft high-frequency lightning current is greatly affected by factors such as numerical integration drift, high ...
Chen Tong   +6 more
doaj   +1 more source

Thunderstorm Feature Dataset and Characteristics of Thunderstorm Activities in China

open access: yes应用气象学报, 2021
A thunderstorm feature dataset (TFD) is built up based on the black body temperature (TBB) product and cloud classification (CLC) product of FY-2E meteorological satellite as well as the lightning data of the World-Wide Lightning Location Network (WWLLN).
Ma Ruiyang   +3 more
doaj   +1 more source

Project Management of Lightning Protection Innovative Design [PDF]

open access: yesE3S Web of Conferences, 2021
Lightning protection is becoming more and more important because the climate has changed in recent years and lightning occurs frequently. Given the lightning accidents in these years, this study adopted a new lightning protection device, increased ...
Ling Kang
doaj   +1 more source

A Maintenance Cost Study of Transformers Based on Markov Model Utilizing Frequency of Transition Approach

open access: yesEnergies, 2018
In this paper, a maintenance cost study of transformers based on the Markov Model (MM) utilizing the Health Index (HI) is presented. In total, 120 distribution transformers of oil type (33/11 kV and 30 MVA) are examined.
Muhammad Sharil Yahaya   +7 more
doaj   +1 more source

Observation of the Whole Discharge Process During a Multi-stroke Triggered Lightning by Continuous Interferometer

open access: yes应用气象学报, 2020
The discharge process is often discussed in the lightning physics. VHF (very high frequency) observations play an important role in studying lightning discharge processes, because they show where air breakdown occurs.
Zhang Yang   +6 more
doaj   +1 more source

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