Passive and active thermal non-destructive imaging of materials

Avdelidis, NP; Moropoulou, A; Almond, DP

dc.contributor.author	Avdelidis, NP	en
dc.contributor.author	Moropoulou, A	en
dc.contributor.author	Almond, DP	en
dc.date.accessioned	2014-03-01T02:49:53Z
dc.date.available	2014-03-01T02:49:53Z
dc.date.issued	2004	en
dc.identifier.issn	0277786X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34762
dc.subject	Aircraft	en
dc.subject	Assessment	en
dc.subject	Composites	en
dc.subject	Conservation	en
dc.subject	Emissivity	en
dc.subject	Modelling	en
dc.subject	Moisture	en
dc.subject	Pavement	en
dc.subject	Thermography	en
dc.subject.other	Aircraft	en
dc.subject.other	Airports	en
dc.subject.other	Composite materials	en
dc.subject.other	Moisture	en
dc.subject.other	Pavements	en
dc.subject.other	Porous materials	en
dc.subject.other	Thermography (imaging)	en
dc.subject.other	Assessment	en
dc.subject.other	Emissivity	en
dc.subject.other	Infrared cameras	en
dc.subject.other	Thermal contact resistance	en
dc.subject.other	Infrared imaging	en
dc.title	Passive and active thermal non-destructive imaging of materials	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1117/12.568749	en
heal.identifier.secondary	http://dx.doi.org/10.1117/12.568749	en
heal.identifier.secondary	18	en
heal.publicationDate	2004	en
heal.abstract	Thermal non-destructive approaches, passive and active, are widely used due to the outstanding advantages that offer in a number of applications and particularly for the assessment of materials and structures, hi this work, different applications, employing either MWIR or LWIR thermographic testing, as well as passive and/or active approaches, depending on the application, concerning the assessment of various materials are presented. In a few instances, thermal modelling is also discussed and compared with the outcome of experimental testing. The following applications are reviewed: Emissivity measurements. Moisture impact assessment in porous materials. Evaluation of conservation interventions, concerning: Consolidation interventions on porous stone. Cleaning of architectural surfaces. Assessment of airport pavements. Investigation of repaired aircraft panels. Through skin sensing assessment on aircraft composite structures. Real time monitoring of all features was obtained using passive imaging or transient thermographic analysis (active imaging). However, in the composite repairs and through skin imaging cases thermal modelling was also used with the intention of providing supplementary results, as well as to demonstrate the importance of thermal contact resistance between two surfaces (skin and strut in through skin sensing). Finally, in order to obtain useful information from the surveys, various properties (thermal, optical, physical) of the examined materials were taken into account.	en
heal.journalName	Proceedings of SPIE - The International Society for Optical Engineering	en
dc.identifier.doi	10.1117/12.568749	en
dc.identifier.volume	5612	en
dc.identifier.spage	126	en
dc.identifier.epage	140	en