Comments about the combination of electrical and mechanical stimulations on rocks to boost frequency related characteristics of current emissions during cracking

dc.contributor.author	Κυριαζής, Παναγιώτης	el
dc.contributor.author	Αναστασιάδης, Κίμων	el
dc.contributor.author	Τριάντης, Δήμος Α.	el
dc.contributor.author	Σταύρακας, Ηλίας	el
dc.contributor.author	Βαλλιανάτος, Φίλιππος	el
dc.date.accessioned	2015-05-01T11:58:58Z
dc.date.available	2015-05-01T11:58:58Z
dc.date.issued	2015-05-01
dc.identifier.uri	http://hdl.handle.net/11400/9369
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://www.egu.eu/	en
dc.subject	Conductivity
dc.subject	Pressure Stimulated Current
dc.subject	Geomaterials
dc.subject	Γεωυλικά
dc.subject	Αγωγιμότητα
dc.subject	Ρεύμα που ενεργοποιείται με την πίεση
dc.title	Comments about the combination of electrical and mechanical stimulations on rocks to boost frequency related characteristics of current emissions during cracking	en
heal.type	conferenceItem
heal.classification	Technology
heal.classification	Electrical engineering
heal.classification	Geology
heal.classification	Τεχνολογία
heal.classification	Ηλεκτρολογία Μηχανολογία
heal.classification	Γεωλογία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85133147
heal.classificationURI	http://zbw.eu/stw/descriptor/18426-4
heal.classificationURI	http://zbw.eu/stw/descriptor/15873-1
heal.classificationURI	N/A-Τεχνολογία
heal.classificationURI	N/A-Ηλεκτρολογία Μηχανολογία
heal.classificationURI	N/A-Γεωλογία
heal.contributorName	Stonham, John	en
heal.language	en
heal.access	free
heal.publicationDate	2009-04
heal.bibliographicCitation	Kyriazis, P., Anastasiadis, C., Triantis, D.A., Stavrakas, I., Vallianatos, F., et al. (2009) Comments about the combination of electrical and mechanical stimulations on rocks to boost frequency related characteristics of current emissions during cracking, In: European Geosciences Union General Assembly 2009. Vienna, Austria, 19-24 April, 2009. [online]. Geophysical Research Abstracts, vol. 11, 12213. Available from: http://www.egu.eu/	en
heal.abstract	Experiments on a variety of rock geomaterials have been contacted using the experimental procedure known as Pressure Stimulated Current (PSC) technique. In this work an innovative measuring technique was considered to provide a more reliable frequency oriented analysis of pressure stimulated currents compared to the conventional PSC technique. The emitted electric current due to cracking is measured by a pair of electrodes perpendicularly positioned with respect to the stress axis. Another pair of electrodes is positioned parallel to the former and electric current due to cracking is measured while an electric field is applied simultaneously to the sample through a new current loop created by a separate measuring channel. The analysis of the two separately recorded signals has given a variety of interesting clues. First of all the coupling between electrodes that measure electric currents of mechanically stressed rocks is quantitatively determined because the measuring channels measure signals differing mutually by up to three orders of magnitude. Therefore the secure distance between the positions of electrodes, as well as details of positioning, were clarified. The existence of detectable currents due to cracking regardless of electric treatment of the sample was verified. This new measuring technique allows the boosting of electrical phenomena related to cracking and verifies the scale free universality of frequency related characteristics of Pressure Stimulated Currents. This experimental technique can provide reasonable conductivity values that can be used for the deterministic electric modeling of a mechanical-electrical phenomenon towards the differentiation between deformation stages of the same material.	en
heal.publisher	European Geosciences Union	en
heal.fullTextAvailability	true
heal.conferenceName	European Geosciences Union General Assembly 2009	en
heal.conferenceItemType	abstract