Electric-Thermo-Mechanical Analysis of Joule Heating in Dilatometric Specimens

Herrejón-Escutia, Martín; Solorio-Díaz, Gildardo; Vergara–Hernández, Héctor Javier; López–Martínez, Edgar; Chávez-Campos, Gerardo Marx; Vázquez–Gómez, Octavio

doi:10.5545/sv-jme.2017.4320

Cited by 6 publications

(1 citation statement)

References 16 publications

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“…On the other hand, the thermal resistance of dilatometric specimens depends hard on the transfer area through which the electrical current circulates as well as the electrical resistivity of the alloy dependent on the chemical composition [11–13]. This work aim is to determine the effect of the thickness and chemical composition of different dilatometric specimens of steel on thermal resistance under heating‐cooling cycles by Joule heating.…”

Section: Introductionmentioning

confidence: 99%

Effect of thickness and chemical composition on thermal resistance of steel dilatometric specimens under heating‐cooling cycles by Joule heating

Chávez‐Campos

Vázquez–Gómez

Vergara–Hernández

et al. 2023

Materialwissenschaft Werkst

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The effect of thickness and chemical composition on the electrical power and thermal resistance of dilatometric specimens heated by Joule heating are analyzed in different steels, using stepped tests of constant temperature and electrical current. In the stepped constant temperature tests, the electric current necessary to maintain the target temperature in a specific time is measured, while in the electric current tests the electrical current is maintained until the maximum temperature stabilizes. The results show that the electrical power behaves linearly with the thickness associated with the transfer area, while the thermal resistance behaves potentially; both values depend on the chemical composition due to electrical resistivity. The steels with a higher concentration of alloying elements have a better response to Joule heating. However, thickness is the parameter that most influences electrical power due to changes in transfer area and electrical current density, as well as in the mass of the specimen to be heated. Finally, based on the results obtained, predictions are realized for the design of thicker specimens, maintaining the observed behavior; i. e., as the thickness of the specimen increases, the increase in electrical power and thermal resistance is maintained.

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Section: Introductionmentioning

confidence: 99%