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Title: Pressure stimulated currents in rocks and their correlation with mechanical properties
Authors: Σταύρακας, Ηλίας
Τριάντης, Δήμος Α.
Αγιουτάντης, Ζαχαρίας
Μαυριγιαννάκης, Στέλιος
Σάλτας, Βασίλης
Contributors: Βαλλιανάτος, Φίλιππος
Clarke, Malcolm
Item type: Journal article
Keywords: Marble;Linear elastic region;Electrical earthquake;Μάρμαρο;Γραμμική ελαστική περιοχή;Ηλεκτρικός σεισμός
Subjects: Technology
Electrical engineering
Ηλεκτρολογία Μηχανολογία
Issue Date: 14-Apr-2015
Date of availability: 14-Apr-2015
Publisher: European Geosciences Union
Abstract: The spontaneous electrification of marble samples was studied while they were subjected to uniaxial stress. The Pressure Stimulated Current (PSC) technique was applied to measure the charge released from compressed Dionysos marble samples, while they were subjected to cyclic loading. The experimental results demonstrate that, in the linear elastic region of the sample, no PSC is recorded, while beyond the stress limit (s>0.60), observable variations appear, which increase considerably in the vicinity of sample failure, reaching a maximum value just before the failure. The emitted current is reduced on each loading cycle and it has a reciprocal dependence to the normalized Young modulus. The MCD model, applied out of the vicinity of sample failure explains successfully the above findings. The existence of a "memory-like" behavior of the sample, could justify the weakness or absence of electrical earthquake precursors, during an aftershock sequence.
Language: English
Citation: STAVRAKAS, I., TRIANTIS, D.A., AGIOUTANTIS, Z., MAURIGIANNAKIS, S., SALTAS, V., ET AL. (2004). Pressure stimulated currents in rocks and their correlation with mechanical properties . Natural Hazards and Earth System Science. [Online] 4 (4). p.563-567. Available from:[Accessed 08/10/2004]
Journal: Natural Hazards and Earth System Science
Type of Journal: With a review process (peer review)
Access scheme: Publicly accessible
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
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