• Open Access

Scale-free features of temporal localization of deformation in late stages of creep failure

Tero Mäkinen, Juha Koivisto, Lasse Laurson, and Mikko J. Alava
Phys. Rev. Materials 4, 093606 – Published 18 September 2020

Abstract

The last stage of material failure often shows a regime with power-law acceleration as the material lifetime is approached. We study this experimentally in tensile creep with paper samples using digital image correlation. The last, tertiary creep stage exhibits scale-free features in the sample response (strain rate) and its fluctuations. It is accompanied by an increasing localization of strain at the location of final failure. The main features are reproduced by a material model built on a viscoelastic fiber bundle model.

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  • Received 1 June 2020
  • Accepted 21 August 2020

DOI:https://doi.org/10.1103/PhysRevMaterials.4.093606

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Statistical Physics & ThermodynamicsCondensed Matter, Materials & Applied Physics

Authors & Affiliations

Tero Mäkinen1,*, Juha Koivisto1, Lasse Laurson2, and Mikko J. Alava1,3

  • 1Department of Applied Physics, Aalto University, P.O. Box 11100, FI-00076 Aalto, Espoo, Finland
  • 2Computational Physics Laboratory, Tampere University, P.O. Box 692, FI-33014 Tampere, Finland
  • 3NOMATEN Centre of Excellence, National Centre of Nuclear Research, A. Soltana 7, 05-400 Otwock–Świerk, Poland

  • *Corresponding author; email address: tero.j.makinen@aalto.fi

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Issue

Vol. 4, Iss. 9 — September 2020

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