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AIP Conference ProceedingsVolume 2288, 26 October 2020, Article number 03000727th Conference on High-Energy Processes in Condensed Matter, HEPCM 2020; Khristianovich Institute of Theoretical and Applied Mechanics, SB RASNovosibirsk; Russian Federation; 29 June 2020 through 3 July 2020; Code 164451

Optical method to study post-necking material behaviour(Conference Paper)(Open Access)

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  • Ural Federal University Named after the First President of Russia B.N. Yeltsin, Ekaterinburg, 620002, Russian Federation

Abstract

The article is devoted to the determination of equivalent stresses and strains in the minimum cross-section of the neck during tensile testing of cylindrical specimens. To correct the average tensile stresses, the Bridgman theory is used, based on the experimental measurement of the neck. The paper proposes an approach for calculating the radius of curvature of the neck based on the approximation equation that describes the entire profile of specimen. Its accuracy was estimated using the finite element method. A program has been developed that provides the measure of the diameter of specimen in the minimum cross-section of the neck and the calculation of the radius of its curvature from the video recording of the test process based on the proposed equation. Using this program, hardening curves for 09G2S steel were constructed at engineering, true and equivalent stresses. © 2020 Author(s).

Funding details

Funding sponsor Funding number Acronym
Council on grants of the President of the Russian FederationMK-1878.2020.8

  • 1

    The study was made within the base part of state job in the field of VFLHQWLILF DFWLYLW\ ʋ -2020-0020 and was supported by the grant from the President of the Russian Federation for young scientists – candidates of sciences MK-1878.2020.8.

  • ISSN: 0094243X
  • ISBN: 978-073544018-0
  • Source Type: Conference Proceeding
  • Original language: English
  • DOI: 10.1063/5.0028748
  • Document Type: Conference Paper
  • Volume Editors: Fomin V.M.
  • Publisher: American Institute of Physics Inc.

  Erpalov, M.V.; Ural Federal University Named after the First President of Russia B.N. Yeltsin, Ekaterinburg, Russian Federation;
© Copyright 2020 Elsevier B.V., All rights reserved.

Cited by 4 documents

Khotinov, V.A. , Erpalov, M.V. , Ovsyannikov, A.B.
Estimation of the Viscoplastic Properties of 38G2F Steel Using the Results of Tensile and Impact Bending Tests
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Phase Transformation Crystallography in Pipeline HSLA Steel after TMCP
(2023) Metals
Erpalov, M. , Khotinov, V.
Application of the Method for Optical Measuring the Neck Profile to Determine the Hardening Curve of Aluminum from the Results of the Tensile Test
(2022) Key Engineering Materials
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