Results 51 to 60 of about 1,336,559 (340)

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

A physical model for the calculation of the corona onset voltage gradient of AC spacers

IET Science, Measurement & Technology, 2023
By correcting the photon area factor (PAF) to suit the structure of the spacer and redefining the effective ionization region of the process of negative corona onset, a physical model for the calculation of COG of AC spacers is established.
Shilong Huang, Jie Mao, Xiaoliang Yan, Weiye Xue, Zhongyuan Zhang, Liang Xie, Yunpeng Liu   +6 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

Study on the partial discharge characteristics induced by the motion of cellulose particles in transformer oil

IET Electric Power Applications
Cellulose particles present a significant concern within the oil‐paper insulation of transformers, posing potential risks to insulation performance.
Yijin Liu, Tao Zhao, Yunpeng Liu, Yunuo Liu, Xu Jiaxue, Chaojie Yang   +5 more
doaj   +1 more source

Alternating Current Discharge Characteristics and Simulation Analysis of Rod-Plane Short Air Gaps under Salt Fog Conditions

Energies, 2018
In this paper, smog meteorological conditions in the natural environment is simulated by the salt fog method. The study of the alternating current (AC) discharge characteristics of rod-plane short air gaps in salt fog environments has important guiding ...
Yunpeng Liu, Shuo Jiang, Zheng Zhong, Jianghai Geng, Fangcheng Lv   +4 more
doaj   +1 more source

Measurement of discharge channel based on background oriented schlieren technique using an optimized algorithm

AIP Advances, 2021
Thermal ionization is the main characteristic of long air gap breakdown. Using the thermal characteristics of the discharge channel can not only analyze the formation and development mechanism of the leader discharge but also better reflect the ...
Quansheng Wang, Jianghai Geng, Ping Wang, Fangcheng Lv, Yujian Ding   +4 more
doaj   +1 more source

Impact of Electric Vechicles on Power Transmission Grids

Heliyon, 2023
This paper presents a methodology for assessing the impact of electric vehicles (EVs) on the power transmission grid of the Costa Rica Power System. The methodology considers penetration scenarios, user preferences, charging habits, and expected fleet growth.
Gustavo Adolfo Gómez-Ramírez, Rebeca Solis-Ortega, Luis Alberto Ross-Lépiz   +2 more
openaire   +3 more sources

Electric Vehicles Charging Control based on Future Internet Generic Enablers

, 2014
In this paper a rationale for the deployment of Future Internet based applications in the field of Electric Vehicles (EVs) smart charging is presented. The focus is on the Connected Device Interface (CDI) Generic Enabler (GE) and the Network Information ...
Di Giorgio, Alessandro, Lanna, Andrea, Liberati, Francesco, Zuccaro, Letterio   +3 more
core   +1 more source

Modelling and simulation of a two speed electric vehicle [PDF]

, 2012
Electric vehicles offer an alternative to hybrid and conventional vehicles through the use of electcric drive without fossil fuel consumption. This shifts green house gas production from the vehicle to power stations, but if power is supplied from ...
Abdul Rahman, S, Lin, Y, Walker, PD, Zhan, W, Zhang, N, Zhu, B   +5 more
core   +1 more source

Single-Wire Electric-Field Coupling Power Transmission Using Nonlinear Parity-Time-Symmetric Model with Coupled-Mode Theory

, 2018
The output power and transmission efficiency of the traditional single-wire electric-field coupling power transmission (ECPT) system will drop sharply with the increase of the distance between transmitter and receiver, thus, in order to solve the above ...
Xujian Shu, Bo Zhang
semanticscholar   +1 more source