Chinese hamster V79 cells were made thermotolerant by either continuous heating at 42.5 degrees or by fractionated 43 degrees exposures with interfraction incubation at 37 degrees. For both methods of thermotolerance induction, elevations in cellular glutathione (GSH) were observed. Additionally, GSH was also shown to be elevated following a 1-hr exposure to 6% ethanol, which also induces therm...

This paper presents the study of induced currents and temperature distribution in gear heated by induction process using 2D finite element (FE) model. The model is developed by coupling Maxwell and heat transfer equations into a multi-physics model. The obtained results allow comparing the medium frequency (MF) and high frequency (HF) cases and the effect of machine parameters on the evolution ...

This paper is proposed to improve the efficiency of the series resonant inverter for industrial heating applications. Resonant inverters are those operate at high frequency with reduced losses preferable for induction heating. Resonating components and switching device which are placed in series to load forms series resonant inverter. Inverter which is characterized by full bridge made up of In...

This paper presents an investigation of non-stationary induction heating process applied to AISI 4340 steel spline shafts based on 3D simulation and experimental validation. The study is based on the knowledge, concerning the form of correlations between various induction heating parameters and the final hardness profile, developed in the case of stationary induction heating. The proposed appro...

Heating induction is a new environmentally friendly, energy-saving technology that offers more effective performance than other common heaters. The energy-use efficiency of an inductor circuit greater 80 percent, while biomass tank and tungsten coil have 70 percent 51.8 efficiency, respectively. This method also produces heat any forms heating using gas or coal. has attracted significant intere...

Abstract Advanced automotive industries generate large demand for the next generation of high strength and toughness spring steels. Vanadium-containing 55SiCrV steels subjected to rapid-induction heating treatment can fulfil such requirements. However, effect vanadium microalloying under online heat treatments is rarely reported. A comparative study microstructure tensile properties 55SiCr stee...

This thesis describes an efficient numerical simulation technique of magnetoquasistatic electromagnetic fields for planar induction heating applications. The technique is based on a volume-element discretization, integral formulation of Maxwell’s equations, and uses the multilayer Green’s function to avoid volumetric meshing of the heated material. The technique demonstrates two orders of magni...