Non-extensivity of the isothermal depolarization relaxation currents in uniaxial compressed rocks

 
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2011 (EN)
Non-extensivity of the isothermal depolarization relaxation currents in uniaxial compressed rocks (EN)

Τριάντης, Δήμος Α. (EL)
Βαλλιανάτος, Φίλιππος (EL)
Sammonds, Peter R. (EN)

N/A (EN)

The isothermal depolarization current relaxation in uniaxial compressed rocks follows a generalized exponential function which explicitly introduces hierarchically constrained dynamics and macroscopic interactions. The interactions are associated with the non-extensive entropy parameter q and exhibits a behavior indicating a scaling with normalized uniaxial stress Σ=σ/σY, where σY is the yield stress where deviation from the elastic region starts in a stress-strain curve. Combining ideas of Levy and Tsallis statistics we argue the remarkable result that a Levy-walk-type mechanism can organize the geometry of the heterogeneous system to criticality. The stress-dependent q-estimation leads to the conclusion that fracturing is a subextensive process with strong interaction. (EN)

journalArticle

Μονοαξονική πίεση (EN)
Uniaxial stress (EN)
Macroscopic interactions (EN)
Pressure stimulated currents (EN)
Μακροσκοπικές αλληλεπιδράσεις (EN)
Ρεύματα που ενεργοποιούνται με την πίεση (EN)

ΤΕΙ Αθήνας (EL)
Technological Educational Institute of Athens (EN)

EPL (EN)

English

2011-06

doi:10.1209/0295-5075/94/68008

IOP Publishing (EN)
EDP Sciences (EN)
EPL Association (EN)
European Physical Society (EN)
Società Italiana di Fisica (IT)



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