Results 41 to 50 of about 11,037,086 (263)

Power module heat sink design optimization with ensembles of data-driven polynomial chaos surrogate models

e-Prime: Advances in Electrical Engineering, Electronics and Energy, 2022
We consider the problem of optimizing the design of a heat sink used for cooling an insulated gate bipolar transistor (IGBT) power module. The thermal behavior of the heat sink is originally estimated using a high-fidelity computational fluid dynamics ...
Dimitrios Loukrezis, Herbert De Gersem
doaj   +1 more source

Acceleration of Universe by Nonlinear Electromagnetic Fields [PDF]

, 2016
A new model of nonlinear electromagnetic fields possessing a dimensional parameter $\beta$ is proposed. Electromagnetic fields are considered as the source of the gravitation field and accelerated expansion of the universe is driven by nonlinear ...
S. Kruglov
semanticscholar   +1 more source

Eddy current testing of metallic sheets with defects using force measurements [PDF]

Serbian Journal of Electrical Engineering, 2008
The problem of determining defects in structures using eddy current methods was investigated. The goal of this work is to demonstrate that the forces generated by the eddy currents and acting back on the magnet system can be used to detect defects in the
Brauer Hartmut, Ziolkowski Marek
doaj   +1 more source

Relativistically expanding cylindrical electromagnetic fields

, 2009
We study relativistically expanding electromagnetic fields of cylindrical geometry. The fields emerge from the side surface of a cylinder and are invariant under translations parallel to the axis of the cylinder.
Aly, Contopoulos, Fabian, Fendt, Goodwin, Gourgouliatos, Gourgouliatos, Hurley, K. N. Gourgouliatos, Kalapotharakos, Komissarov, LeBlanc, Lovelace, Lovelace, Low, Lynden-Bell, Lynden-Bell, Lyutikov, McKinney, Meliani, Palmer, Prendergast, Priest, Tsinganos, Uzdensky, Uzdensky, Vlahakis, Vlahakis, Wolfson   +28 more
core   +1 more source

The interaction between electromagnetic fields at megahertz, gigahertz and terahertz frequencies with cells, tissues and organisms: risks and potential

Journal of the Royal Society Interface, 2017
Since regular radio broadcasts started in the 1920s, the exposure to human-made electromagnetic fields has steadily increased. These days we are not only exposed to radio waves but also other frequencies from a variety of sources, mainly from ...
Sergii Romanenko, Ryan Begley, A. Harvey, L. Hool, V. Wallace   +4 more
semanticscholar   +1 more source

Approximation and Uncertainty Quantification of Systems with Arbitrary Parameter Distributions using Weighted Leja Interpolation

Algorithms, 2020
Approximation and uncertainty quantification methods based on Lagrange interpolation are typically abandoned in cases where the probability distributions of one or more system parameters are not normal, uniform, or closely related distributions, due to ...
Dimitrios Loukrezis, Herbert De Gersem
doaj   +1 more source

Gauge Invariant Fractional Electromagnetic Fields

, 2011
Fractional derivatives and integrations of non-integers orders was introduced more than three centuries ago but only recently gained more attention due to its application on nonlocal phenomenas.
Agrawal, Agrawal, Baleanu, Baleanu, Bauer, Belleguie, Brandt, Caputo, Caputo, Cresson, Cresson, Dreisigmeyer, Engheta, Genchev, Goldfain, Herrmann, Iomin, Ketov, Kilbas, Kusnezov, Laskin, Laskin, Lim, Magin, Mashhoon, Matheus Jatkoske Lazo, Metzler, Metzler, Munkhammar, Muslih, Naber, Naqvi, Oldham, Podlubny, Raspini, Riewe, Tarasov, Tarasov, West, Zhang, Závada   +40 more
core   +1 more source

Rotation of electromagnetic fields and the nature of optical angular momentum [PDF]

, 2010
The association of spin and orbital angular momenta of light with its polarization and helical phase fronts is now well established. The problems in linking this with electromagnetic theory, as expressed in Maxwell's equations, are rather less well known.
Barut AO, Bateman H, Biedenharn LC, Cohen-Tannoudji C, Heaviside O, Jackson JD, Jauch JM, Milonni PW, Power EA, Rose ME, Simmons JW, Stephen M. Barnett, Yilmaz H   +12 more
core   +1 more source

Structural Health Monitoring: Latest Applications and Data Analysis

Applied Sciences, 2023
Structural health monitoring (SHM) is focused on the systematic monitoring of the state of structures to determine their safety, dependability, and durability [...]
Grzegorz Psuj, Barbara Szymanik
doaj   +1 more source

Tetrads in Geometrodynamics

, 2004
A new tetrad is introduced within the framework of geometrodynamics for non-null electromagnetic fields. This tetrad diagonalizes the electromagnetic stress-energy tensor and allows for maximum simplification of the expression of the electromagnetic ...
Alcides Garat, Carmeli M., Stephani H., Weinberg S.   +3 more
core   +1 more source