Results 11 to 20 of about 789,537 (359)

Dynamic Time Warping Based Pilot Protection Algorithm for AC and HVDC Transmission Lines

open access: yesIEEE Access, 2023
This paper presents a pilot protection algorithm for alternating (ac) and direct current (dc) transmission lines, the last in the line commutated converter and voltage source converter topologies.
Giovanni Manassero   +1 more
doaj   +1 more source

Parameter Evaluation Procedure for Gapped Core Current Transformers Considering Accuracy Requirements under Transient Conditions [PDF]

open access: yesE3S Web of Conferences, 2020
Particular features of gapped core current transformers and characteristics of transient phenomena inside them are under consideration; a procedure is proposed that allows for evaluating the excitation limiting e.m.f.
Vorobiev Victor   +6 more
doaj   +1 more source

Recursive least squares for online dynamic identification on gas turbine engines [PDF]

open access: yes, 2016
Online identification for a gas turbine engine is vital for health monitoring and control decisions because the engine electronic control system uses the identified model to analyze the performance for optimization of fuel consumption, a response to ...
Nalianda, Devaiah   +2 more
core   +1 more source

Mechanically-assisted crevice corrosion and its effect on materials degradation

open access: yesCorrosion Communications, 2023
Mechanically-assisted crevice corrosion (MACC) is a synergistic combination of wear and crevice corrosion. The major differences between tribocorrosion, fretting corrosion and MACC relate to the relative scale of motion and contact area, are clarified in
Weichen Xu   +5 more
doaj   +1 more source

Microstructure Refinement on Crevice Corrosion of High-Speed Rail Steel U75V Visualized by an In Situ Monitoring System

open access: yesFrontiers in Materials, 2022
Rail foot covered by a fastener will suffer from crevice corrosion, leading to thinning and localized attack of crevice interior posing a risk of failure. This work investigated crevice corrosion behavior of a typical pearlitic high-speed rail steel U75V,
Jian Wang   +18 more
doaj   +1 more source

The Pilling-Bedworth Ratio of Oxides Formed From the Precipitated Phases in Magnesium Alloys

open access: yesFrontiers in Materials, 2021
The Pilling-Bedworth ratio of oxides preferentially formed from the precipitated phases in magnesium alloys were calculated. The results showed that the PBR value of Nd2O3 preferentially formed from Mg12Nd was 1.0584, and the PBR value of Y2O3 ...
Quantong Jiang   +14 more
doaj   +1 more source

Two metabolic stages of SRB strain Desulfovibrio bizertensis affecting corrosion mechanism of carbon steel Q235

open access: yesCorrosion Communications, 2023
Desulfovibrio bizertensis (D. bizertensis), an SRB isolated and cultured from the rust layer of the South China Sea, is widespread in the corrosive microbial communities on steel surface.
Xucheng Dong   +6 more
doaj   +1 more source

Decision-making for unmanned aerial vehicle operation in icing conditions [PDF]

open access: yes, 2016
With the increased use of unmanned aerial systems (UAS) for civil and commercial applications, there is a strong demand for new regulations and technology that will eventually permit for the integration of UAS in unsegregated airspace.
Armanini, S. F.   +4 more
core   +1 more source

Exceptional atmospheric corrosion inhibition performance of super-hydrophobic films based on the self-propelled jumping behavior of water droplets

open access: yesCorrosion Communications, 2021
Super-hydrophobic surfaces have attracted much attention for their potential applications based on the lotus effect, especially in corrosion protection. However, the lotus effect has limited application given its high dependence on external forces, such ...
Peng Wang   +4 more
doaj   +1 more source

Driving automation: Learning from aviation about design philosophies [PDF]

open access: yes, 2007
Full vehicle automation is predicted to be on British roads by 2030 (Walker et al., 2001). However, experience in aviation gives us some cause for concern for the 'drive-by-wire' car (Stanton and Marsden, 1996). Two different philosophies have emerged in
Harris, D, Stanton, NA, Young, MS
core   +1 more source

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