An Inductive Method for Comprehensive Estimation of Temperature-Dependent Electrical and Thermal Properties of Conductive Ferromagnetic Materials

Reliable information about the properties of the processed materials has a significant impact on the effects of their processing. In induction heating processes, this also applies to information about the influence of temperature <i>T</i> on these properties. These are both thermal and e...

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Main Author: Jerzy Zgraja
Format: Article
Language:English
Published: MDPI AG 2024-02-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/17/4/887
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author Jerzy Zgraja
author_facet Jerzy Zgraja
author_sort Jerzy Zgraja
collection DOAJ
description Reliable information about the properties of the processed materials has a significant impact on the effects of their processing. In induction heating processes, this also applies to information about the influence of temperature <i>T</i> on these properties. These are both thermal and electro-magnetic properties. Based on previous studies, a comprehensive experimental method is presented for estimating the temperature characteristics of thermal diffusivity, volumetric heat capacity and resistivity on one measurement station, with particular attention to ferromagnetic materials. The estimation process is carried out on an induction heating stand using forcing signals from an inverter generator. In a computer-controlled cycle that changes the base temperature level, basic measurements of thermal and electrical properties are carried out on a material sample in the form of a cylindrical disk. They are the results of the analysis of the temperature and electromagnetic responses of a material sample to short- and long-term step pulses of a sinusoidal excitation signal with a frequency of approximately 40 kHz. The presented estimation method can be treated as a final method or a preliminary procedure for radically narrowing the variability in decision variables inthe optimization process of simultaneous determination of the sought material characteristics.
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spelling doaj.art-5df9ea3246a640e8922fe50e553086d42024-02-23T15:15:21ZengMDPI AGEnergies1996-10732024-02-0117488710.3390/en17040887An Inductive Method for Comprehensive Estimation of Temperature-Dependent Electrical and Thermal Properties of Conductive Ferromagnetic MaterialsJerzy Zgraja0Institute of Applied Computer Science, Lodz University of Technology, 90-537 Lodz, PolandReliable information about the properties of the processed materials has a significant impact on the effects of their processing. In induction heating processes, this also applies to information about the influence of temperature <i>T</i> on these properties. These are both thermal and electro-magnetic properties. Based on previous studies, a comprehensive experimental method is presented for estimating the temperature characteristics of thermal diffusivity, volumetric heat capacity and resistivity on one measurement station, with particular attention to ferromagnetic materials. The estimation process is carried out on an induction heating stand using forcing signals from an inverter generator. In a computer-controlled cycle that changes the base temperature level, basic measurements of thermal and electrical properties are carried out on a material sample in the form of a cylindrical disk. They are the results of the analysis of the temperature and electromagnetic responses of a material sample to short- and long-term step pulses of a sinusoidal excitation signal with a frequency of approximately 40 kHz. The presented estimation method can be treated as a final method or a preliminary procedure for radically narrowing the variability in decision variables inthe optimization process of simultaneous determination of the sought material characteristics.https://www.mdpi.com/1996-1073/17/4/887induction heatingmaterial propertiestemperature characteristics
spellingShingle Jerzy Zgraja
An Inductive Method for Comprehensive Estimation of Temperature-Dependent Electrical and Thermal Properties of Conductive Ferromagnetic Materials
Energies
induction heating
material properties
temperature characteristics
title An Inductive Method for Comprehensive Estimation of Temperature-Dependent Electrical and Thermal Properties of Conductive Ferromagnetic Materials
title_full An Inductive Method for Comprehensive Estimation of Temperature-Dependent Electrical and Thermal Properties of Conductive Ferromagnetic Materials
title_fullStr An Inductive Method for Comprehensive Estimation of Temperature-Dependent Electrical and Thermal Properties of Conductive Ferromagnetic Materials
title_full_unstemmed An Inductive Method for Comprehensive Estimation of Temperature-Dependent Electrical and Thermal Properties of Conductive Ferromagnetic Materials
title_short An Inductive Method for Comprehensive Estimation of Temperature-Dependent Electrical and Thermal Properties of Conductive Ferromagnetic Materials
title_sort inductive method for comprehensive estimation of temperature dependent electrical and thermal properties of conductive ferromagnetic materials
topic induction heating
material properties
temperature characteristics
url https://www.mdpi.com/1996-1073/17/4/887
work_keys_str_mv AT jerzyzgraja aninductivemethodforcomprehensiveestimationoftemperaturedependentelectricalandthermalpropertiesofconductiveferromagneticmaterials
AT jerzyzgraja inductivemethodforcomprehensiveestimationoftemperaturedependentelectricalandthermalpropertiesofconductiveferromagneticmaterials