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Proceedings Paper

NDT and E for the surface roughness of marble
Author(s): Nicolas P. Avdelidis; Antonia Moropoulou; Ekaterini T. Delegou; Darryl P. Almond
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Paper Abstract

Two non-contact NDT and E (non-destructive testing and evaluation) techniques were employed in the inspection of quarry Pentelic marble samples; surface profilometry and infrared thermography. The samples were processed with different roughness treatments (i.e. 60, 80, 100, 220, 400 and 600 mesh) and were evaluated in the laboratory. Furthermore, different surface cleaning treatments were applied to a Pentelic marble surface in situ and then representative samples were collected and evaluated in the laboratory by the means of these two non-destructive techniques. Quantitative analysis of all samples was performed. In particular, the surface roughness parameter Rq at a specific length scale and 3-D micro-topography plots were attained by the use of the laser profilometry scanning approach, whilst temperature - time plots displaying the intensity of pixels as a function of time on the obtained thermal images were also obtained with the intention of distinguishing the influence of the applied roughness treatments. Results indicate that these two non-destructive techniques can be used for the assessment of surface roughness.

Paper Details

Date Published: 12 April 2004
PDF: 6 pages
Proc. SPIE 5405, Thermosense XXVI, (12 April 2004); doi: 10.1117/12.541311
Show Author Affiliations
Nicolas P. Avdelidis, MIKAT Surveillance Systems (Greece)
Univ. of Bath (United Kingdom)
Antonia Moropoulou, National Technical Univ. of Athens (Greece)
Ekaterini T. Delegou, National Technical Univ. of Athens (Greece)
Darryl P. Almond, Univ. of Bath (United Kingdom)

Published in SPIE Proceedings Vol. 5405:
Thermosense XXVI
Douglas D. Burleigh; K. Elliott Cramer; G. Raymond Peacock, Editor(s)

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