Genetic algorithms are on the rise in electromagnetics as design tools and problem solvers because of their versatility and ability to optimize in complex multimodal search spaces. This paper describes the basic genetic algorithm and recounts its history in the electromagnetics literature. Also, the application of advanced genetic operators to the field of electromagnetics is described, and design results are presented for a number of different applications.

Genetic algorithm optimization applied to electromagnetics: a review

A review of multi-physical fields induced phenomena and effects in spark plasma sintering: Fundamentals and applications

Journal of Magnetism and Magnetic Materials. Volumes 198-199, 1 June 1999,

https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1243&context=ameslab_manuscripts

Review of Fe-6.5 wt%Si high silicon steel—A promising soft magnetic material for sub-kHz application

This paper reviews the design and development of magnetothermally-triggered drug delivery systems, whereby magnetic nanoparticles are combined with thermally-activated materials. By combining superparamagnetic nanoparticles with lower critical solution temperature (LCST) polymers, an alternating current (AC) magnetic field can be used to trigger localized heating in vivo, which in turn causes a phase change in the host polymer to allow diffusion and release of drugs. The use of magnetic nanoparticles for biomedical applications is reviewed, as well as the design of thermally-activated polymeric systems. Current research on externally-triggered delivery is highlighted, with a focus on the design and challenges in developing magnetothermally-activated systems.

Magnetothermally-responsive Nanomaterials: Combining Magnetic Nanostructures and Thermally-Sensitive Polymers for Triggered Drug Release

A new concept for the control of a magnetic circuit is described. This new concept is used for control with eddy currents and with a permanent magnet. The eddy current control has a conducting plate that sets to concentrate the flux and to decrease the exciting current. The permanent magnet is constructed by arrangement of several magnets. The effects of switching the magnetic circuit are described. The circuit uses two kinds of magnets, i.e., Alnico (with high resonance) and ferrite (with high coercive force). >

Flux Controlling Methdo Of Magnetic Circuit And Its Application

This paper describes the chaotic behavior of Barkhausen noise. We previously revealed that Barkhausen noises under a rotational magnetic field were different from those under an alternating magnetic field, and showed that the heat fatigue level of Inconel-600 steel plates could be detected by using the proposed Barkhausen noises. In this paper, we examine the latter chaotic behavior in order to apply it to the estimation of the fatigue level of metallic structures.

Chaotic Behavior of Rotational Barkhausen Noises.

For this investigation, the Si–Fe powder containing 1% to 6.5% silicon was prepared by the spark erosion technique, which has a higher quenching rate than splat-cooling. The roughly spherical powder particles of 6.5% Si–Fe ranged from 0.1 µm to 30 µm in diameter, and the rapidly quenched magnetic powder was composed of both noncrystalline and crystalline portions. The fractional volume of the noncrystalline portion increased as the particle size decreased. The procedure for preparing the powder, its magnetothermal characteristics and its crystallization behaviour are discussed.

https://iopscience.iop.org/article/10.1143/JJAP.23.1020/pdf

Magnetothermal Characteristics of Rapidly-Quenched Fe–Si Magnetic Powder

Conventional non-destructive testing methods cannot necessarily estimate the amount of fatigue damage. If this can be estimated, the service life of a structure can be extended and accidents can be prevented. We measured the magnetic flux density caused by residual magnetization in order to estimate the amount of fatigue damage to austenitic stainless steel plates (SUS304), using a fluxgate sensor. Our experiments showed that the residual magnetization is clearly dependent on an increase in the plane bending stress and the number of stress cycles. This paper discusses the evaluation of plane bending fatigue in austenitic stainless steel plates using residual magnetization.

Evaluation of the Bending Fatigue of Stainless Steels Using the Residual Magnetization Method.

This paper describes a new multilayer coil with a core for generating high ac magnetic fields. The new device employs an eddy current-type multilayer coil in which the core is set to decrease the exciting current. The core always operates in an unsaturated state. The device efficiently concentrates ac magnetic flux and makes it easier to obtain a high magnetic field. The structure and characteristics of the device are also discussed.

Characteristics of Multilayer Eddy-Current Type Coil with Core

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