Author:
Bauer Elton,de Freitas Vasco Peixoto,Mustelier Niubis,Barreira Eva,de Freitas Sara Stingl
Abstract
Purpose
– Infrared thermography is increasingly being used to diagnose pathologies in buildings, such as façade defects. The purpose of this paper is to assess the results reproducibility and the equipment influence on the measurements. To do so, it was defined as case study the assessment of rendering delamination.
Design/methodology/approach
– Two infrared cameras of different makers were used to detect the presence of defects deliberately created in specimens. The tests were done in the laboratory with a heat source. The defects were detected through a temperature gradient between the zones with and without defect.
Findings
– With this thermographic imaging, it was possible to identify the defects in the specimen both qualitatively and quantitatively. The results were found to be reproducible in the three cycles performed. The influence of the equipment on the results was of little significance for the quantitative assessment criterion “temperature difference between zones with and without defect”, but for the criterion “absolute surface temperature”, the difference in the results yielded by the two cameras was around 1.8°C.
Originality/value
– The results suggest that there is reproducibility of the measurements, considering both the qualitative and quantitative approach, when assessing delamination, irrespective of the maker of the equipment used. The influence of the equipment on the results depends on the quantitative assessment criterion used.
Subject
Building and Construction,Civil and Structural Engineering
Reference30 articles.
1. Asdrubali, F.
,
Baldinelli, G.
and
Bianchi, F.
(2012), “A quantitative methodology to evaluate thermal bridges in buildings”,
Applied Energy
, Vol. 97, pp. 365-373.
2. ASTM E1862
(1997/2010), “Standard test methods for measuring and compensating for reflected temperature using infrared imaging radiometers”, ASTM International.
3. Avdelidis, N.
and
Moropoulou, A.
(2003), “Emissivity considerations in building thermography”,
Energy and Buildings
, Vol. 35 No. 7, pp. 663-667.
4. Avdelidis, N.
and
Moropoulou, A.
(2004), “Applications of infrared thermography for the investigation of historic structures”,
Journal of Cultural Heritage
, Vol. 5 No. 1, pp. 119-127.
5. Avdelidis, N.
,
Moropoulou, A.
and
Theoulakis, P.
(2003), “Detection of water deposits and movement in porous materials by infrared imaging”,
Infrared Physics & Technology
, Vol. 44 No. 3, pp. 183-190.
Cited by
30 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献