A new permeameter has been built and is now available for testing samples of steel and other ferromagnetic materials for their magnetic characteristics such as permeability, remanent induction, coercive force and saturation induction. The present range of operation for the permeameter is from 0.5 Oe to 1250 Oe. Results are presented for two samples of low-carbon steel as well as some preliminar...

This paper numerically investigates the application induction heating in weld-based additive manufacturing to reduce residual stresses. To avoid time-consuming transient electromagnetic calculation, the induction heat is assumed to be constant in the arc coordinate. Thermo-electromagnetic coupling analysis is performed only at a typical time to obtain the representative distribution of inductio...

Magnetic nanocrystals have been investigated extensively in the past several years for several potential applications, such as information technology, MRI contrast agents, and for drug conjugation and delivery. A specific property of interest in biomedicine is magnetic hyperthermia-an increase in temperature resulting from the thermal energy released by magnetic nanocrystals in an external alte...

To observe the evolution mechanism of physical fields in welding deformation rectification process by a traveling induction heating, research on simulation models welding—induction heating continuous were carried out. High-strength steel plates selected for experiment and turn, stress field strain distribution after various processes measured recorded. Then, according to construction process, a...

The electron transport though ferromagnetic-metal–superconducting hybrid devices is considered in the nonequilibrium Green’s function formalism in the quasiclassical approximation. Attention is focused on the limit in which the exchange splitting in the ferromagnet is much larger than the superconducting energy gap. Transport properties are then governed by an interplay between spin accumulatio...

Besides permitting an accurate determination of the ferromagnetic-to-paramagnetic phase transition temperature and the characteristic temperatures for the beginning and end of the growth of martensite (austenite) phase at the expense of austenite (martensite) phase while cooling (heating), the results of an extensive ac susceptibility, sound velocity and internal friction investigation of the t...

A novel magneto-active gel based nanomaterial system is presented to provide precise control of temperature to a localized area in response to externally controlled magnetic stimuli. Integration of ferromagnetic nanoparticles (Fe3O4) in the polyethylene glycol (PEG) based thermo-responsive polymer provides the swelling and de-swelling behavior of magnetic stimuli controlled system by generating...

Abstract The numerical simulation of the induction heating process can be computationally expensive, especially if ferromagnetic materials are studied. There several analytical models that describe electromagnetic phenomena. However, these very limited by geometry coil and workpiece. Thus, usual method for computing more complex systems is to use finite element solve set equations in multiphysi...

UNLABELLED Nickel-titanium shape memory alloy (NiTi-SMA) implants might allow modulating fracture healing, changing their stiffness through alteration of both elastic modulus and cross-sectional shape by employing the shape memory effect (SME). HYPOTHESES a novel NiTi-SMA plate stabilizes tibia osteotomies in rabbits. After noninvasive electromagnetic induction heating the alloy exhibits the ...

This paper presents a novel three-phase utility frequency to high frequency soft switching power conversion circuit with dual mode pulse width modulation and pulse density modulation for high power induction heating applications as melting of steel and non ferrous metals, annealing of metals, surface hardening of steel and cast iron work pieces and hot water producers, steamers and super heated...