English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Acoustic emission (AE) characterization is an effective technique toindirectly capture the progressive failure process of the brittle rock. Inprevious studies, both the experiment and numerical simulation were adopted toinvestigate AE characteristics of the brittle rock. However, as the mostpopular numerical model, the moment tensor model (MTM) did not reproduce themonitoring and analyzing manner of AE signals from the physical experiment.Consequently, its result could not be constrained by the experimental result.It is thus necessary to evaluate the consistency and compatibility between theexperiment and MTM. To fulfill this, we developed a particle-velocity-basedmodel (PVBM) which enabled directly monitor and analyze the particle velocityin the numerical model and had good robustness. The PVBM imitated the actualexperiment and could fill in gaps between the experiment and MTM. AEexperiments of Marine shale under uniaxial compression were carried out, ofwhich results were simulated by MTM. In general, the variation trend of theexperimental result could be presented by MTM. Nevertheless, magnitudes of AEparameters by MTM presented notable differences with more than several orderscompared with those by the experiment. We sequentially used PVBM as a proxy toanalyze these discrepancies quantitatively and make a systematical evaluationon AE characterization of brittle rocks from the experiment to numericalsimulation, considering the influence of wave reflection, energy geometricaldiffusion, viscous attenuation, particle size as well as progressivedeterioration of rock material. It was suggested that only the combination ofMTM and PVBM could reasonably and accurately acquire AE characteristics of theactual AE experiment of brittle rocks by making full use of their respectiveadvantages.

Evaluation on characterization of acoustic emission of brittle rocks from the experiment to numerical simulation