Assessment of cleaning interventions on marble surfaces using pulsed thermography

Delegou, ET; Krokida, M; Avdelidis, NP; Moropoulou, AI

dc.contributor.author	Delegou, ET	en
dc.contributor.author	Krokida, M	en
dc.contributor.author	Avdelidis, NP	en
dc.contributor.author	Moropoulou, AI	en
dc.date.accessioned	2014-03-01T02:53:33Z
dc.date.available	2014-03-01T02:53:33Z
dc.date.issued	2012	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36413
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-84856680072&partnerID=40&md5=f873b9596af774ebd534b3aa8e3985a2	en
dc.subject.other	Cooling rates	en
dc.subject.other	Falling-rate	en
dc.subject.other	First-order kinetic models	en
dc.subject.other	In-situ	en
dc.subject.other	Marble surfaces	en
dc.subject.other	Microscopy images	en
dc.subject.other	Pulsed thermography	en
dc.subject.other	Time constants	en
dc.subject.other	Cleaning	en
dc.subject.other	Cooling	en
dc.subject.other	Image processing	en
dc.subject.other	Luminance	en
dc.subject.other	Mathematical models	en
dc.subject.other	Nondestructive examination	en
dc.subject.other	Thermography (imaging)	en
dc.subject.other	Marble	en
dc.title	Assessment of cleaning interventions on marble surfaces using pulsed thermography	en
heal.type	conferenceItem	en
heal.publicationDate	2012	en
heal.abstract	In this work, pulsed infrared thermography was applied on marble samples collected on site before and after pilot cleaning interventions. Temperature-time plots, displaying the intensity of pixels against time were plotted from the acquired pulsed thermographic images, and the temperature falling rate for the investigated samples was studied. It is shown that the cooling rate of the investigated samples is described by a first order kinetic model, where the time constant of the cooling rate is an exponential function of marble surface fracturing and its luminosity. The fracturing values resulted by digital image processing of microscopy images, whereas luminosity values were recorded by the in situ application of the NDE technique of colorimetry. It is concluded that the pulsed thermography can be a skilful means of inspecting marble architectural surfaces, before and after cleaning, using the suggested empirical mathematical model © 2012 Taylor & Francis Group, London.	en
heal.journalName	Emerging Technologies in Non-Destructive Testing V - Proceedings of the 5th Conference on Emerging Technologies in NDT	en
dc.identifier.spage	31	en
dc.identifier.epage	36	en