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Title: Electric signal emissions during repeated abrupt uniaxial compressional stress steps in amphibolite from KTB drilling
Authors: Τριάντης, Δήμος Α.
Αναστασιάδης, Κίμων
Βαλλιανάτος, Φίλιππος
Κυριαζής, Παναγιώτης
Nover, G.
Item type: Journal article
Keywords: mechanical stress;Rock sample;Electric insulators;Direction of stress;Μηχανική καταπόνηση;Δείγμα πέτρας;Μονωτές ηλεκτρικού ρεύματος;Κατεύθυνση πίεσης
Subjects: Technology
Electrical engineering
Ηλεκτρολογία Μηχανολογία
Issue Date: 14-Apr-2015
Date of availability: 14-Apr-2015
Publisher: Copernicus Publications
Abstract: Laboratory experiments have confirmed that the application of uniaxial stress on rock samples is accompanied by the production of weak electric currents, to which the term Pressure Stimulated Currents ? PSC has been attributed. In this work the PSC emissions in amphibolite samples from KTB drilling are presented and commented upon. After having applied sequential loading and unloading cycles on the amphibolite samples, it was ascertained that in every new loading cycle after unloading, the emitted PSC exhibits lower peaks. This attitude of the current peaks is consistent with the acoustic emissions phenomena, and in this work is verified for PSC emissions during loading ? unloading procedures. Consequently, the evaluation of such signals can help to correlate the state and the remaining strength of the sample with respect to the history of its mechanical stress.
Language: English
Citation: TRIANTIS, D.A., ANASTASIADIS, C., VALLIANATOS, F., KYRIAZIS, P. & NOVER, G. (2007). Electric signal emissions during repeated abrupt uniaxial compressional stress steps in amphibolite from KTB drilling. Natural Hazards and Earth System Science. [Online] 7 (1). p.149-154. Available from:[Accessed 26/01/2007]
Journal: Natural Hazards and Earth System Sciences
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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