Dielectric spectroscopy as a diagnostic test method for the determination of mechanical damage in marble samples

dc.contributor.author	Σάλτας, Βασίλης	el
dc.contributor.author	Τριάντης, Δήμος Α.	el
dc.contributor.author	Σταύρακας, Ηλίας	el
dc.contributor.author	Αναστασιάδης, Κίμων	el
dc.contributor.author	Βαλλιανάτος, Φίλιππος	el
dc.date.accessioned	2015-04-19T11:51:03Z
dc.date.available	2015-04-19T11:51:03Z
dc.date.issued	2015-04-19
dc.identifier.uri	http://hdl.handle.net/11400/8552
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.subject	dielectric spectroscopy
dc.subject	conductivity
dc.subject	electric modulus
dc.subject	rocks
dc.subject	Mechanical properties
dc.subject	διηλεκτρική φασματοσκοπία
dc.subject	αγωγιμότητα
dc.subject	ηλεκτρικό μέτρο
dc.subject	μηχανικές ιδιότητες
dc.subject	πετρώματα
dc.title	Dielectric spectroscopy as a diagnostic test method for the determination of mechanical damage in marble samples	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.keywordURI	http://lod.nal.usda.gov/192546
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh2002006407
heal.language	en
heal.access	free
heal.publicationDate	2009-09
heal.bibliographicCitation	Saltas, V., Triantis, D.A., Stavrakas, I., Anastasiadis, C. and Vallianatos, F. (2009) Dielectric spectroscopy as a diagnostic test method for the determination of mechanical damage in marble samples, In: Proceedings of the 10th International Conference of the Slovenian Society for Non-Destructive Testing. Ljubljana, Slovenia, 1-3 September, 2009. [online]. p.415-421. Available from: http://www.ndt.net/	en
heal.abstract	Dielectric Spectroscopy (DS) is a well-established technique for the electrical characterization of various materials but may also serve to determine changes in their mechanical properties, since the macroscopic structural changes of a material under stress are strongly related to changes in its electrical conductivity or dielectric properties. In the present work, dry marble samples were subjected to various uniaxial loads up to failure and the complex dielectric permittivity İ* was recorded during each load cycle, over a wide frequency range (10-2Hz – 1MHz). The results show a strong dispersion in electrical conductivity spectra, especially at low frequencies. Conductivity values measured at low frequencies (<1Hz) are almost three orders of magnitude larger for samples prior to failure, as compared to the unstressed samples. Dc-conductivity follows an exponential behavior with respect to the relative compressional stress. A frequency dependent relaxation mechanism is observed in the electric modulus representation M* during the application of stress to the sample. The frequency of the observed relaxation peak in the imaginary part of M* and the values of M recorded in the real part of M*, are strongly affected by the applied stress and may be used to provide reliable information about the stress condition of the investigated material.	en
heal.publisher	The Slovenian Society for Non-Destructive Testing	en
heal.fullTextAvailability	true
heal.conferenceName	10th International Conference of the Slovenian Society for Non-Destructive Testing	en
heal.conferenceItemType	full paper