Pressure stimulated currents correlated with acoustic emissions during the application of mechanical stress on marble samples

dc.contributor.author	Σταύρακας, Ηλίας	el
dc.contributor.author	Χλούπης, Γεώργιος Π.	el
dc.contributor.author	Αναστασιάδης, Κίμων	el
dc.contributor.author	Τριάντης, Δήμος Α.	el
dc.date.accessioned	2015-04-26T16:39:38Z
dc.date.available	2015-04-26T16:39:38Z
dc.date.issued	2015-04-26
dc.identifier.uri	http://hdl.handle.net/11400/8999
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	https://www.egu.eu/	en
dc.subject	Weak electric current
dc.subject	Fracture
dc.subject	Electric noise
dc.subject	Ασθενές ηλεκτρικό ρεύμα
dc.subject	Θραύση
dc.subject	Ηλεκτρικός θόρυβος
dc.title	Pressure stimulated currents correlated with acoustic emissions during the application of mechanical stress on marble samples	en
heal.type	conferenceItem
heal.classification	Technology
heal.classification	Electrical engineering
heal.classification	Τεχνολογία
heal.classification	Ηλεκτρολογία Μηχανολογία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85133147
heal.classificationURI	http://zbw.eu/stw/descriptor/18426-4
heal.classificationURI	N/A-Τεχνολογία
heal.classificationURI	N/A-Ηλεκτρολογία Μηχανολογία
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85041872
heal.language	en
heal.access	free
heal.publicationDate	2010-05
heal.bibliographicCitation	Stavrakas, I., Hloupis, G.P., Anastasiadis, C. and Triantis, D.A. (2010) Pressure stimulated currents correlated with acoustic emissions during the application of mechanical stress on marble samples, In: European Geosciences Union General Assembly 2010. Vienna, Austria, 2-7 May, 2010. [online]. Geophysical Research Abstracts, vol. 12, 14107. Available from: https://www.egu.eu/	en
heal.abstract	When a brittle material is subjected to mechanical stress up to the level of fracture, weak electric current emissions related to the mechanical status of the sample are detected. Such electric current emissions are rendered under the term Pressure Stimulated Currents. In this work marble samples were subjected to continuously increasing mechanical stress at a constant rate up to fracture. During this procedure the sample was placed in a shielded cage in order to avoid electric noise from affecting the measurements. The emitted PSC was recorded with a sensitive programmable electrometer while the applied stress and the yielded strain were measured through a load cell and a strain gage bridge respectively. Concurrent Acoustic Emission (AE) measurements were conducted with the use of a high sampling rate acquisition system. In this work, for the very first time the PSC emissions are correlated with the AE events. From the experimental results it becomes clear that when the electric current shows significant excitation, concurrent high power AE events are recorded. The phenomenon becomes more obvious in the vicinity of fracture where the mass cracking that guides fracture leads to a significant number of high power AE events. This observation clearly verifies PSC theory since it shows that the recorded PSC is a consequence of the cracking process.	en
heal.publisher	European Geosciences Union	en
heal.fullTextAvailability	true
heal.conferenceName	European Geosciences Union General Assembly 2010	en
heal.conferenceItemType	abstract