An outdoor thermographic survey of historic structures

Moropoulou, A; Avdelidis, NP; Theoulakis, P

dc.contributor.author	Moropoulou, A	en
dc.contributor.author	Avdelidis, NP	en
dc.contributor.author	Theoulakis, P	en
dc.date.accessioned	2014-03-01T02:49:22Z
dc.date.available	2014-03-01T02:49:22Z
dc.date.issued	2003	en
dc.identifier.issn	0277786X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34561
dc.subject	Building materials	en
dc.subject	Conservation treatments	en
dc.subject	Consolidation	en
dc.subject	Moisture	en
dc.subject	Non-destructive	en
dc.subject	Thermography	en
dc.subject.other	Building materials	en
dc.subject.other	Consolidation	en
dc.subject.other	Moisture	en
dc.subject.other	Porous materials	en
dc.subject.other	Thermal diffusion	en
dc.subject.other	Historic structures	en
dc.subject.other	Thermography (imaging)	en
dc.title	An outdoor thermographic survey of historic structures	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1117/12.497522	en
heal.identifier.secondary	http://dx.doi.org/10.1117/12.497522	en
heal.publicationDate	2003	en
heal.abstract	Frequently, on outdoor thermographic surveys long wavelength infrared - thermal imaging systems are employed. When such systems are cooled, they are ideal for outdoor measurements, since they eliminate the effects of sunlight reflections and enhance the accuracy of the measurements. In this research study, long wavelength infrared thermography was used in the assessment of historic porous stones masonry, either consolidated or untreated, in the Medieval City of Rhodes, in Greece. Due to the difference between the thermal diffusivities of consolidated and untreated stones or even of moist and dry stones, infrared thermography was capable of imaging large areas, displaying qualitative variations in penetration depth (i.e. consolidation) and/or respiration behaviour (i.e. moisture impact), appearing as surface temperature fluctuations on the thermal image(s). The obtained thermal images provided significant information in the assessment of materials concerning moisture and consolidation treatments; monitoring of the physicochemical behaviour of porous materials. Conclusively, thermography ought to be considered as a powerful non-destructive assessment tool in the investigation of historic structures.	en
heal.journalName	Proceedings of SPIE - The International Society for Optical Engineering	en
dc.identifier.doi	10.1117/12.497522	en
dc.identifier.volume	5073	en
dc.identifier.spage	117	en
dc.identifier.epage	121	en