Identifying impending failure in heterogeneous materials: A study on acoustic emission time series

Leandro F. Friedrich, Édiblu S. Cezar, Angélica B. Colpo, Boris N.R. Tanzi, Giuseppe Lacidogna and Ignacio Iturrioz

Chaos, Solitons & Fractals, 2024, vol. 185, issue C

Abstract: In the present paper, precursors to identify impending failure in heterogeneous materials are investigated by analyzing Acoustic Emission (AE) time series. Three main approaches are considered: (1) long-range correlations using the Hurst (H) analysis, (2) Natural Time (NT) analysis, and (3) a proposed Method of Critical Fluctuations-Based (MCF-B) approach. The above approaches are employed to data collected from an experimental AE test on a concrete cubic specimen subjected to an axial compression loading. The results indicate that: persistent long-range correlations tend towards near-random behavior prior to imminent failure; critical regions, characterized by the convergence of natural time parameters, show a direct correlation with imminent increments in the acoustic emission activity and the structure's collapse; the proposed MCF-B approach as precursor, is capable to identify critical states, being the results in agreement with those from NT and Hurst analysis.

Keywords: Acoustic emission; Long-range correlations; Natural time analysis; Method of critical fluctuations (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:185:y:2024:i:c:s0960077924007240

DOI: 10.1016/j.chaos.2024.115172

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