Results 61 to 70 of about 112,422 (307)
EnergiesWith the increasing grid integration of wind turbines, mechanical reliability issues have become more critical. In particular, two-mass drivetrains undergo severe torsional vibrations due to abrupt torque fluctuations during low-voltage ride-through ...
Min-Jun Jo, Ye-Chan Kim, Seung-Ho Song
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Resistive damping implementation as a method to improve controllability in stiff ohmic RF-MEMS switches [PDF]
, 2013 This paper presents in detail the entire procedure of calculating the bias resistance of an ohmic RF-MEMS switch, controlled under resistive damping (charge drive technique).
D Czaplewski +11 more
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Domain Wall Rebounds Driven by Competing Entropic and Spin‐Transfer Torques in Cylindrical Nanowires
Advanced Functional Materials, EarlyView.Domain‐wall motion in cylindrical magnetic nanowires driven by nanosecond current pulses. Low current densities efficiently displace domain walls, whereas higher currents cause rebound at the wire ends. The effect results from the interplay between spin‐transfer torque and thermally induced processes, highlighting the role of thermal gradients in ...
Elias Saugar +11 more
wiley +1 more source
IEEE AccessThe Virtual Synchronous Generator (VSG) is a widely studied control strategy for Grid-Forming (GFM) converters, enabling frequency support by implementing virtual inertia and damping.
Erico Gurski, Roman Kuiava, Gilney Damm
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Conductive Bonding and System Architectures for High‐Performance Flexible Electronics
Advanced Functional Materials, EarlyView.This review outlines bonding technologies and structural design strategies that support high‐performance flexible and stretchable electronics. Bonding approaches such as surface‐activated bonding and anisotropic conductive films, together with system‐level architectures including buffer layers and island‐bridge structures, possess distinct mechanical ...
Kazuma Nakajima, Kenjiro Fukuda
wiley +1 more source
Gourd‐Inspired Design of Unit Cell with Multiple Gradients for Physiological‐Range Pressure Sensing
Advanced Functional Materials, EarlyView.Gourd‐shaped micro‐dome arrays with coordinated modulus, conductivity, and geometric gradients co‐optimize sensitivity and linearity in piezoresistive tactile sensors. Under pressure, a solid upper dome embeds into a porous lower dome, triggering rapid contact‐area growth and series‐to‐parallel conduction, enabling unsaturated, intensity‐resolved ...
Jiayi Xu +6 more
wiley +1 more source
Non-modal stability analysis and transient growth in a magnetized Vlasov plasma
, 2014 Collisionless plasmas, such as those encountered in tokamaks, exhibit a rich variety of instabilities. The physical origin, triggering mechanisms and fundamental understanding of many plasma instabilities, however, are still open problems. We investigate
Ratushnaya, Valeria, Samtaney, Ravi
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Advanced Functional Materials, EarlyView.ACC forms via aggregating prenucleation clusters that gatekeep its chemical composition. Ion identity steers the path: Ba and Sr substitute Ca in clusters, thereby inhibiting nucleation, with a dose‐dependent switch of Sr to induction. Mg partitions into Mg‐rich and Mg‐poor clusters; the latter form ACC, expelling Mg.
Qianyu Zhao +9 more
wiley +1 more source
Study on Dynamic Characteristics of Thrust Bearing of Icebreaker
Journal of Harbin University of Science and Technology, 2019 By means of finite element analysis method, we simulate the process of the icebreaker and ice collision to obtain the ice load The transient point supporting fanshaped thrust bearing dynamic characteristics were calculated in this transient process,and
LI Yong-hai +4 more
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Vertical axis wind turbine drive train transient dynamics [PDF]
, 1982 Start up of a vertical axis wind turbine causes transient torque oscillations in the drive train with peak torques which may be over two and one half times the rated torque of the turbine.
Carne, T. G., Clauss, D. B.
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