Share Email Print

Proceedings Paper

A nondestructive method for diagnosis of insulated building walls using infrared thermography in real situation
Author(s): Mohamed H. A. Larbi Youcef; Atef Mazioud; Pierre Bremond; Laurent Ibos; Yves Candau; Michel Piro; Alain Filloux
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

In order to provide a method to control conformity of insulation of buildings after restoration, Protomeres project was launched under Prebat 2005 program. This work deals with the development of an experimental protocol for the diagnostic of multi-layered insulated building walls. In a previous study, a test bench was set up in order to measure front and back side temperatures of standard panels compounded of 1cm of plaster and various thicknesses of polystyrene. The panels considered have insulation thicknesses of 2, 6 and 10cm. In the present work, the panels are fixed on walls in laboratory to test real situations in constructions. The front side is painted in standardized black color and heated by two halogen lamps of 500W. A CEDIP Jade Long wave infrared camera and thermocouples are used to carry out temperature measurements during an exposure time and subsequent cooling. In a second time, a one dimensional model based on thermal quadruples and Laplace transforms was developed under Matlab environment. This model simulates a three-layered wall with a blade of air between polystyrene and concrete. Finally, a method of identification of physical parameters is implemented by performing least square minimization based on Levenberg-Marquardt method. The experimental measurements are compared to theoretical results and by minimization we obtain thermal conductivity and diffusivity as well as thickness of the two layers.

Paper Details

Date Published: 17 March 2008
PDF: 8 pages
Proc. SPIE 6939, Thermosense XXX, 69390V (17 March 2008); doi: 10.1117/12.776850
Show Author Affiliations
Mohamed H. A. Larbi Youcef, C.E.R.T.E.S., IUT, Univ. Paris XII (France)
Atef Mazioud, C.E.R.T.E.S., IUT, Univ. Paris XII (France)
Pierre Bremond, Cedip Infrared Systems (France)
Laurent Ibos, C.E.R.T.E.S., IUT, Univ. Paris XII (France)
Yves Candau, C.E.R.T.E.S., IUT, Univ. Paris XII (France)
Michel Piro, EDF R&D (France)
Alain Filloux, Alpheeis (France)

Published in SPIE Proceedings Vol. 6939:
Thermosense XXX
Vladimir P. Vavilov; Douglas D. Burleigh, Editor(s)

© SPIE. Terms of Use
Back to Top