Results 71 to 80 of about 787,525 (181)

INFLUENCE OF THE TIME OF DISINHIBITION TO TRANSIENTS AND WEAR OF THE FRICTION LININGS IN AN ASYNCHRONOUS MOTOR

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2016
Time and the stopping distance of the electric drive with frequent starting-and-braking modes that contain embedded asynchronous motor with a recessed combined braking device depend on the moment of an electromagnet disinhibition.
V. V. Solencov, V. V. Brel
doaj   +1 more source

A Novel Exact Plate Theory for Bending Vibrations Based on the Partial Differential Operator Theory

open access: yesMathematics, 2021
Thick wall structures are usually applied at a highly reduced frequency. It is crucial to study the refined dynamic modeling of a thick plate, as it is directly related to the dynamic mechanical characteristics of an engineering structure or device ...
Chuanping Zhou   +5 more
doaj   +1 more source

Dynamics of a nano-scale rotor driven by single-electron tunneling [PDF]

open access: yesEPL, 98 (2012) 68004, 2012
We investigate theoretically the dynamics and the charge transport properties of a rod-shaped nano-scale rotor, which is driven by a similar mechanism as the nanomechanical single-electron transistor (NEMSET). We show that a static electric potential gradient can lead to self-excitation of oscillatory or continuous rotational motion.
arxiv   +1 more source

A 2 degree-of-freedom SOI-MEMS translation stage with closed loop positioning [PDF]

open access: yes, 2014
This research contains the design, analysis, fabrication, and characterization of a closed loop XY micro positioning stage. The XY micro positioning stage is developed by adapting parallel-kinematic mechanisms, which have been widely used for macro and ...
Koo, Bon Jin
core  

Vibration control in plates by uniformly distributed PZT actuators interconnected via electric networks

open access: yes, 2010
In this paper a novel device aimed at controlling the mechanical vibrations of plates by means of a set of electrically-interconnected piezoelectric actuators is described. The actuators are embedded uniformly in the plate wherein they connect every node
Batra   +17 more
core   +1 more source

Gunn Effect in Silicon Nanowires: Charge Transport under High Electric Field [PDF]

open access: yes, 2017
Gunn (or Gunn-Hilsum) Effect and its associated negative differential resistivity (NDR) emanates from transfer of electrons between two different energy bands in a semiconductor.
Anantram, M. P.   +5 more
core   +3 more sources

In-line variable spreading of carbon fibre/thermoplastic pre-preg tapes for application in automatic tape placement

open access: yesMaterials & Design, 2020
This study investigates a device for in-line continuous spreading of carbon fibre/thermoplastic pre-preg tape for potential application in the Laser-Assisted Automatic Tape Placement (LATP) laminate manufacturing process.
Gearóid Clancy   +3 more
doaj  

Biventricular Mechanical Circulatory Support Does Not Prevent Delayed Myocardial Ventricular Rupture following Myocardial Infarction

open access: yesCase Reports in Cardiology, 2013
Cardiogenic shock and myocardial rupture can complicate an acute myocardial infarction (AMI). A case is reported in which a 58-year-old male with an acute inferior myocardial infarction required placement of biventricular assist device for hemodynamic ...
Yazhini Ravi   +4 more
doaj   +1 more source

Design Optimization of MEMS Comb Accelerometer [PDF]

open access: yes, 2007
© ASEE 2007MEMS (Microelectromechanical Systems) refers to the technology integrating electrical and mechanical components with feature size of 1~1000 microns.
Hmurcik, Lawrence V.   +4 more
core   +1 more source

Calculation of electrical impedance of oscillating piezoceramic disk in the area of high frequencies

open access: yesТехнічна інженерія, 2020
The relevance of the use of various functional elements of piezoelectronics in power and information systems is due primarily to their high reliability. As a result of research of mathematical model of the real device it is possible to define a specific ...
K.V. Bazilo   +3 more
doaj   +1 more source

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