Results 61 to 70 of about 309,905 (207)

Feasibility study of embedded FBG thermal sensing use for monitoring electrical fault-induced thermal excitation in random wound coils

The Journal of Engineering, 2019
This paper reports an experimental feasibility study of the potential for using Fibre Bragg Grating (FBG) thermal sensing technology for electrical fault detection in random wound coils.
Anees Mohammed, Siniša Djurović
doaj   +1 more source

Phase separation in mixtures of colloids and long ideal polymer coils

, 2000
Colloidal suspensions with free polymer coils which are larger than the colloidal particles are considered. The polymer-colloid interaction is modeled by an extension of the Asakura-Oosawa model. Phase separation occurs into dilute and dense fluid phases
A. Hanke, A. M. Kulkarni, A. Vrij, D. Frenkel, E. Eisenriegler, E. F. Casassa, E. J. Meijer, H. N. W. Lekkerkerker, M. Dijkstra, M. H. J. Hagen, M. S. Wertheim, N. E. Carnahan, P. G. de Gennes, R. P. Sear, R. P. Sear, R. P. Sear, R. Verma, Richard P. Sear, S. Asakura, T. Odijk, W. C. K. Poon, W. G. Hoover   +21 more
core   +1 more source

Strain analysis of stator coil holders for permanent magnet spherical motors

工程科学学报, 2015
An analytical model of air-gap flux density and the Lorenz force law were used to establish radial and tangential electro-magnetic force models in the spherical coordinate system for the stator coils. Then, a finite element model of the stator casing and
WU Feng-ying
doaj   +1 more source

Hybrid electromagnetic Halbach array for wireless power transfer (WPT) system using variable and uniform pitch coils

IET Power Electronics
The electromagnetic Halbach array (EHA) for wireless power transfer (WPT), designed to improve the transferred power and power transfer distance, has been proven to be effective and can be applied in various consumer applications.
Tamuno‐omie Gogo, Dibin Zhu
doaj   +1 more source

Magnifying image intensifier [PDF]

, 1978
A magnetically focused image intensifier was improved to increase the usable range of magnification without degradation of image quality. The power requirements of the focusing coils are minimal.
Vine, J.
core   +1 more source

Embroidered Coils for Magnetic Resonance Sensors [PDF]

, 2013
Magnetic resonance imaging is a widely used technique for medical and materials imaging. Even though the objects being imaged are often irregularly shaped, suitable coils permitting the measurement of the radio-frequency signal in these systems are ...
Blumich, Blümich, Callaghan, Fukushima, García-Naranjo, Geya, Kleinberg, Manz, Massey, Meiboom, Van Landeghem, Varnaitė   +11 more
core   +2 more sources

Cyber–physical microgrid components fault prognosis using electromagnetic sensors

IET Cyber-Physical Systems, 2018
Higher operational requirements in cyber–physical microgrid system stress the electrical system and may push it to the edge of stability. Therefore, prognosis of the imminent failures is vital.
Tanushree Agarwal, Payam Niknejad, Abolfazl Rahimnejad, Abolfazl Rahimnejad, M.R. Barzegaran, Luigi Vanfretti   +5 more
doaj   +1 more source

Structural determinants of coiled coil mechanics

Physical Chemistry Chemical Physics, 2019
In shear geometry, the sequence–structure–mechanics relationship of rationally designed coiled coil heterodimers is determined by the helix propensity of the individual helices and the packing density at the hydrophobic core.
Patricia Lopez-Garcia, Melis Goktas, Ana E. Bergues-Pupo, Beate Koksch, Daniel Varon Silva, Kerstin G. Blank   +5 more
openaire   +4 more sources

Proposed methodology for online frequency response analysis based on magnetic coupling to detect winding deformations in transformers

High Voltage, 2019
Frequency response analysis is widely used as a method for the offline diagnosis of winding deformations in power transformers. To apply it to a working transformer, people need to determine how to inject the excitation signal and measure the response ...
Yangchun Cheng, Jiangang Bi, Jiangang Bi, Wenzhi Chang, Yuan Xu, Xiaohua Pan, Xianwei Ma, Shuai Chang   +7 more
doaj   +1 more source

Influence of Fluoride and Stress on the Electrochemical Properties of Nickel-Titanium Coils [PDF]

, 2015
The aim of this study was to examine the effects of fluoride and stress on the electrochemical properties of nickel-titanium coils. Forty Dentsply GAC NiTi coils were divided into four groups of ten and individually tested.
Barnes, Ashley
core   +1 more source