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Proceedings Paper

Use of cooling down thermography in locating below-surface defects of building facades
Author(s): Timo T. Kauppinen; Christiane Maierhofer; Herbert Wiggenhauser; Detlef Arndt
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Paper Abstract

By using quantitative thermal scanning of the surface of various building structures, defects and thermal bridges can be found and recognized. In controlled conditions, it is also possible to classify the type of defects applying non- stationary heat-transfer models. By heating the structure with an energy pulse and monitoring the surface temperature changes, the structural details and defects in the near- surface region can be clearly seen in the thermal images, based on the different thermal parameters of these structures. In this paper, experimental results of laboratory studies of a test wall (thermal cabin) are presented. Using relatively low energy pulses and short heating-up times (15 min), different surface temperatures and different rates of cooling visualize the structural details of the cabin. The paper is partially based on the presentation at Eurosense, June 1999.

Paper Details

Date Published: 30 March 2000
PDF: 14 pages
Proc. SPIE 4020, Thermosense XXII, (30 March 2000); doi: 10.1117/12.381567
Show Author Affiliations
Timo T. Kauppinen, VTT Building Technology (Finland)
Christiane Maierhofer, Federal Institute for Materials Research and Testing (Germany)
Herbert Wiggenhauser, Federal Institute for Materials Research and Testing (Germany)
Detlef Arndt, Federal Institute for Materials Research and Testing (Germany)

Published in SPIE Proceedings Vol. 4020:
Thermosense XXII
Ralph B. Dinwiddie; Dennis H. LeMieux, Editor(s)

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