Acoustic Emissions in Rock Deformation and Failure: New Insights from Q-Statistical Analysis

Sergio Vinciguerra; Annalisa Greco; Alessandro Pluchino; Andrea Rapisarda; Constantino Tsallis

doi:10.20944/preprints202303.0462.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 24 March 2023 / Approved: 27 March 2023 / Online: 27 March 2023 (13:30:55 CEST)

We propose a new statistical analysis of the Acoustic Emissions (AE) produced in a series of triaxial deformation experiments leading to fractures and failure of two different rocks, namely, Darley Dale Sandstone (DDS) and AG Granite (AG). By means of q-statistical formalism, we are able to characterize the pre-failure processes in both types of rocks. In particular, we study AE inter-event time and AE inter-event distance distributions. Both of them can be reproduced with q-exponential curves, showing universal features which are observed here for the first time and could be important in order to understand more in detail rock fractures dynamics.

Acoustic emissions; q-statistics; rocks fractures

Environmental and Earth Sciences, Geochemistry and Petrology

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Acoustic Emissions in Rock Deformation and Failure: New Insights from Q-Statistical Analysis

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