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Proceedings Paper

Thermal nondestructive evaluation of scaling in boiler tubes
Author(s): Sanjay Awasthi; Ravibabu Mulaveesala; Suneet Tuli
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Paper Abstract

This paper highlights the modeling, simulation and detection of deposited scales in boiler tubes by Pulsed Thermography (PT). A novel data analysis method, based on variations of slopes in Temperature-Time profiles approach has been adopted, to estimate subsurface scale thickness and material loss in the tubes. The slopes are obtained for different pixels in the field of view of the captured image sequence during transient heating of the boiler tube. Relative thickness variations due to material loss and the deposited scales of boiler tube have been estimated from the calculated slopes. Experimental results are presented in support.

Paper Details

Date Published: 9 April 2007
PDF: 8 pages
Proc. SPIE 6541, Thermosense XXIX, 654114 (9 April 2007); doi: 10.1117/12.724820
Show Author Affiliations
Sanjay Awasthi, Indian Institute of Technology Delhi (India)
Ravibabu Mulaveesala, Indian Institute of Technology Delhi (India)
Suneet Tuli, Indian Institute of Technology Delhi (India)

Published in SPIE Proceedings Vol. 6541:
Thermosense XXIX
Kathryn M. Knettel; Vladimir P. Vavilov; Jonathan J. Miles, Editor(s)

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