Analysis of Materials Emissivity Based on Image Software
Thermography Infrared (TIV) is a nondestructive diagnostic technique, with non-contact, to evaluate the surface temperature of objects based on the emitted radiation. The surface temperature field is carried out using an image that reproduces color patterns. As a non-destructive, versatile, and non-contact technique, constitutes a very useful tool in various fields. Active or passive heating procedures may be used. Nevertheless, accurate measurement of temperature is strongly dependent on the emissivity value of the material. This study presents and discusses a methodology for measuring the materials emissivity using image processing software. The results show an effective and valuable contribution in this field, especially for application in active thermography.
KeywordsEmissivity Infrared thermography Non-destructive diagnostic technique Image software
Unable to display preview. Download preview PDF.
- 1.Bucur V.: Nondestructive Characterization and Imaging of Wood. Springer, NY, USA (2003)Google Scholar
- 2.Rosina, E., Robison, E.: The Aplication of Infrared Thermography on Wood-Framed North American Historic Buildings”, APT Bulletin. 4, 37–44 (2002)Google Scholar
- 3.Maldague, X.: Nondestructive Evaluation of Materials by Infrared Thermography. Springer-Verlag. London, UK (1993)Google Scholar
- 5.Avdelidis, N., Moropoulou, A.: Emissivity Considerations in Building Thermography, Energy and Buildings. 35, 663–667 (2003)Google Scholar
- 7.López, G., Basterra, L., Acuna, L., Casado, M.: Determination of the Emissivity of Wood for Inpection by Infrared Thermography. Journal Nondestruct Eval. (2013)Google Scholar
- 8.Spencer, M.: Applying Infrared Thermography for the Purpose of Identifying Concealed Wood Framing Member Type and Subsurface Anomalies with Intended Application Towards Historic Structures. Lexington, Kentucky, National Center for Preservation Technology and Training—Technology Serving the Future of America´s Heritage (2008), http://ncptt.nps.gov/wp-content/uploads/2008-06.pdf”.
- 9.Rice, R.: Emittance Factores for Infrared Thermometers Used for Wood Products. Wood and Fiber Science. 36, 520–526 (2004)Google Scholar
- 10.Fronapfel, E.; Stolz, B.: Emissivity Measurements of Common Construction Materials. In: InfraMation Proceedings (2006). http://www.callsbsa.com/wpcontent/uploads/2011/03/Emissivity-Measurementsof-Common-Construction-Materials.pdf
- 11.Tanaka, T.; Divós, F.: Wood Inspection by Thermography. In: Proceedings of the 12th International Symposium on Nondestructive Testing of Wood (2012). http://www.NDT.net/article/v06n03/Tanaka/Tanaka.htm
- 12.ASTM E1933-99a (Reapproved 2010), Standard Test Methods for Measuring and Compensating for Emissivity Using Infrared Imaging Radiometers. American Society for Testing and Materials, West Conshohocken, USA (2013).Google Scholar
- 13.FLIR Systems. Manual do Utilizador da FLIR ThermaCAM B20. FLIR (2006)Google Scholar
- 14.FLIR Systems. Manual do Utilizador do software FLIR ThermaCAM QuickView 1.3. FLIR (2006)Google Scholar
- 15.FLIR Systems. Manual do Utilizador do software FLIR ThermaCAM Reporter 7.0. FLIR (2006)Google Scholar