TY - JOUR
T1 - A new development of four-point method to measure the electrical resistivity in situ during plastic deformation
AU - Saberi, Saeid
AU - Stockinger, Martin
AU - Stoeckl, Christian
AU - Buchmayr, Bruno
AU - Weiss, Helmut
AU - Afsharnia, Reza
AU - Hartl, Karin
N1 - Publisher Copyright:
© 2021 The Author(s)
PY - 2021/5/11
Y1 - 2021/5/11
N2 - 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.
AB - 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.
KW - Electrical resistivity
KW - Four-point method
KW - Plane strain test
KW - Plastic anisotropy
KW - Plastic deformation
KW - Uniaxial tensile test
UR - http://www.scopus.com/inward/record.url?scp=85105863085&partnerID=8YFLogxK
U2 - 10.1016/j.measurement.2021.109547
DO - 10.1016/j.measurement.2021.109547
M3 - Article
SN - 0263-2241
VL - 180.2021
JO - Measurement
JF - Measurement
IS - August
M1 - 109547
ER -