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Axial Temperature Profile in a Cylindrical Tensile Bar Carrying a Large Electric Current During a Tensile Test

[+] Author Affiliations
Russell L. Warley, John T. Roth

Penn State Erie, The Behrend College

Paper No. IMECE2006-14927, pp. 615-623; 9 pages
doi:10.1115/IMECE2006-14927
From:
  • ASME 2006 International Mechanical Engineering Congress and Exposition
  • Heat Transfer, Volume 2
  • Chicago, Illinois, USA, November 5 – 10, 2006
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-4785-3 | eISBN: 0-7918-3790-4
  • Copyright © 2006 by ASME

abstract

Recent research has shown that passing DC electric current through a metallic tensile test specimen during deformation decreases the energy required to deform a specimen to a greater extent than that expected due to resistive heating. Prior resistive heating models have been successful in predicting temperatures in the absence of test sample deformation. In this work a 1D transient thermal model of a cylindrical cross section tensile bar is solved for the case where the sample is carrying a large DC electric current while simultaneously being deformed to fracture. The model uses a simplified representation of the necking process to provide geometrical information to the heat transfer model during the latter phases of deformation. Simulation results are compared to experimental surface temperature data.

Copyright © 2006 by ASME

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