Similarity of fluctuations in critical systems: Acoustic emissions observed before fracture

Andronikos Loukidis, Jennifer Perez-Oregon, Ermioni D. Pasiou, Nicholas V. Sarlis and Dimos Triantis

Physica A: Statistical Mechanics and its Applications, 2021, vol. 566, issue C

Abstract: Here, we study the scaled distributions for the variance κ1 of natural time χ when analysing the energy time-series of acoustic emission recorded when marble and cement mortar specimens were subjected to mechanical loading until fracture. It is shown that the κ1 scaled distributions exhibit – for at least three orders of magnitude – a characteristic exponential tail like that previously found for the order parameter in equilibrium (e.g., two-dimensional Ising model), and in non-equilibrium (e.g., turbulent flow) critical systems as well as in seismicity. The presented findings, which are also compared to those coming from the non-conservative Olami–Feder–Christensen earthquake model and the Burridge–Knopoff train model, advocate for the use of κ1 as an order parameter for the acoustic events preceding failure in a fashion similar to that in the case of seismicity.

Keywords: Systems obeying scaling laws; Criticality; Fluctuations; Natural time; Acoustic emissions; Fracture (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:566:y:2021:i:c:s0378437120309201

DOI: 10.1016/j.physa.2020.125622

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