Results 81 to 90 of about 137,232 (346)

Single-Pole High-Resistance Grounding Protection for DC Distribution Lines Based on Current Integral Quantity Correlation

Zhongguo dianli
When a single-pole high-resistance grounding fault occurs in a DC distribution system, the transient current amplitude is small and the fault characteristics are weak, making it hard for the existing protection methods to provide reliable protection for ...
Xingquan JI, Huizong MAO, Pingfeng YE, Zhiqiang LIU, Xiangxing ZHANG, Xinyue HUANG, Yachao NI   +6 more
doaj   +1 more source

Tribological Performance of 60NiTi Alloy Under Varying Contact Conditions and Elevated Temperatures in Linear Reciprocating Sliding

Advanced Engineering Materials, EarlyView.
This study investigates the tribological response of 60NiTi alloy under dry, water‐lubricated and high‐temperature conditions. The alloy exhibits decreasing wear volume and friction with increasing temperature due to the formation of protective oxide layers. The work clarifies dominant wear mechanisms and demonstrates the suitability of 60NiTi for high‐
Anthony Onyebuchi Okoani, Miguel Angel Selles, Maziar Ramezani   +2 more
wiley   +1 more source

A BEM approach for grounding grid computation [PDF]

, 1994
16th International Conference on Boundary Element Methods, 1994, Southampton, England[Abstract] Grounding systems are designed to preserve human safety and grant the integrity of equipments under fault conditions. To achieve these goals, the equivalent
Casteleiro, Manuel, Colominas, Ignasi, Navarrina, Fermín   +2 more
core  

Transient Physical Effects in Electron Beam Sintering [PDF]

, 2006
The extensive use of the electron beam in manufacturing processes like welding or perforating revealed the high potentials for also using it for solid freeform fabrication. First approaches like feeding wire into a melt pool have successfully shown the
Lutzmann, S., Sigl, M., Zaeh, M. F.
core   +1 more source

Nanoindentation Criteria for Combinatorial Thin Film Libraries

Advanced Engineering Materials, EarlyView.
Thin‐film material libraries are compositional spreads used for screening composition‐structure‐property relationships. Nanoindentation is often used to characterize mechanical behavior across these systems, however variations in methodology are widespread.
Andre Bohn, Adie Alwen, Andrea M. Hodge
wiley   +1 more source

The Layer 0 Inner Silicon Detector of the D0 Experiment

, 2009
This paper describes the design, fabrication, installation and performance of the new inner layer called Layer 0 (L0) that was inserted in the existing Run IIa Silicon Micro-Strip Tracker (SMT) of the D0 experiment at the Fermilab Tevatron collider.
A. Bean, A. Nomerotski, A. Zieminski, C.E. Gerber, C.H. Daly, Cooper, D. Buchholz, D. Butler, D. Markley, D. Olis, D. Strom, D. Tsybychev, E. Shabalina, F. Lehner, G.J. Otero y Garzón, Garcia-Sciveres, H. Gonzalez, H. Guldenman, H.J. Lubatti, J. Foglesong, J. Green, J. Howell, J. Wang, K. Hanagaki, K. Herner, K. Krempetz, K. Schultz, Krieger, L. Bagby, L. Christofek, Lutz, M. Demarteau, M. Hrycyk, M. Johnson, M. Kirby, M. Matulik, M. Roman, M. Tuttle, M. Utes, M. Weber, R. Angstadt, R. Lipton, R. Rucinski, R.D. Taylor, R.L. McCarthy, R.P. Smith, S.W. Youn, T. Bolton, T. Wesson, T. Zhou, W. Kuykendall, W.E. Cooper, Y. Orlov, Zimmerman, Zimmerman   +54 more
core   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Tower-Footing Resistance and Lightning Trip-outs of 150 kV Transmission Lines in West Sumatra in Indonesia

MATEC Web of Conferences, 2018
The trip-out rates calculated by taking account of the reduction in the tower-footing resistance due to the ionizing effect agree well with the observed ones.
Warmi Yusreni, Michishita Koji
doaj   +1 more source

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 Single‐Phase Grounding Fault Line Selection Method for Flexible Grounding Active Distribution Networks Based on the Ratio of Zero‐Sequence Current Changes

IET Electric Power Applications
Single‐phase grounding faults (SPGFs), especially high‐resistance faults, significantly weaken the electrical characteristics of active distribution networks (ADNs), thereby posing considerable challenges for faulted line selection (FLS).
Shi Su, Yuan Li, Xuehao He, Qingyang Xie, Jiali Su, Fahui Chen, Botong Li, Changqi Wang   +7 more
doaj   +1 more source