A new development of four-point method to measure the electrical resistivity in situ during plastic deformation

Saeid Saberi, Martin Stockinger, Christian Stoeckl, Bruno Buchmayr, Helmut Weiss, Reza Afsharnia, Karin Hartl

Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung

1 Zitat (Scopus)


The presented study introduces a new test method to measure the change of the electrical resistivity in situ during plastic deformation to characterize the deformation behaviour of metals. This investigation is based on a specially developed four- point method, which determines the change in electrical resistance of sheet samples of an aluminium alloy 6062, a copper alloy CW024A and steel DC04 in situ during deformation in a tensile test. Results show that the strain path, the deformation history, the plastic anisotropy as well as the plastic deformation have a significant influence on the electrical resistivity of all investigated materials. Therefore, this technique is universally applicable for all sheet metals, independent of the crystal structure, the electrical and mechanical properties to characterize structural changes during forming. The obtained data can be used for simulations of metal forming processes, e. g. to predict forming limit curves and damage monitoring under service loading.
PublikationsstatusVeröffentlicht - 11 Mai 2021

Bibliographische Notiz

Funding Information:
This work was financially supported by Austrian Academy of Sciences. The experimental and scientific assistances provided by the Institute of Metal Forming, Montanuniversitaet Leoben is gratefully acknowledged.

Publisher Copyright:
© 2021 The Author(s)


  • Electrical resistivity
  • Four-point method
  • Plane strain test
  • Plastic anisotropy
  • Plastic deformation
  • Uniaxial tensile test

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