Hostname: page-component-cd9895bd7-p9bg8 Total loading time: 0 Render date: 2024-12-23T18:50:18.795Z Has data issue: false hasContentIssue false
  • English
  • Français

Defects detection by infrared thermography with a newmicrowave excitation system

Published online by Cambridge University Press:  28 August 2014

Sam Ang Keo ,
Franck Brachelet ,
Didier Defer  and
Florin Breaban
Get access

Abstract

This study presents a NDT method using infrared thermography associated with a microwave excitation. The advantages of such stimulation lie in the volumic absorption of incoming waves which lead to a greater sounded depth. This method is applied to two types of samples. The first is a concrete slab reinforced with CFRP on which a bonding failure is inserted and the second is a wooden plate on which a metallic insert is placed on the back face. The device generating the microwaves is made of a commercial magnetron associated with a pyramidal horn antenna. An infrared camera is placed on the same side as the stimulated surface and thermograms are recorded at regular intervals. The whole assembly is placed in a protective room against high frequencies. The incident power density leads to heating of less than 1 °C of the surface of the samples. The thermograms show a higher temperature rise in front of the defect area. The non-uniformity of the beam, leads us to treat the thermograms with an algorithm of contrast. These first results show the interest of the microwave excitation to detect defects deeper than in the case of surface excitation.

Keywords

NDTinfrared thermographymicrowaveCFRPwood
Type
Research Article
Information
Mechanics & Industry , Volume 15 , Issue 6 , 2014 , pp. 509 - 516
Copyright
© AFM, EDP Sciences 2014

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Balaras, C.A., Argiriou, A.A., Infrared thermography for building diagnostics, Energy Build. 34 (2002) 171–183 CrossRefGoogle Scholar
Meola, C., A new approach for estimation of defects detection with infrared thermography, Mater. Lett. 61 (2007) 747–750 CrossRefGoogle Scholar
Cheng, Chia-Chi, Cheng, Tao-Ming, Chiang, Chih-Hung, Defect detection of concrete structures using both infrared thermography and elastic waves, Automat. Constr. 18 (2008) 87–92 CrossRefGoogle Scholar
Grinzato, E., Vavilov, V., Kauppinen, T., Quantitative infrared thermography in buildings, Energy Build. 29 (1998) 1–9 CrossRefGoogle Scholar
Taillade, F., Quiertant, M., Benzarti, K., Aubagnac, C., Shearography and pulsed stimulated infrared thermography applied to a nondestructive evaluation of FRP strengthening systems bonded on concrete structures, Constr. Build. Mater. 25 (2011) 568–574 CrossRefGoogle Scholar
Wiggenhauser, H., Active IR-applications in civil engineering, Infrared Phys. Technol. 43 (2002) 233–238 CrossRefGoogle Scholar
Jeff R. Brown, H.R. Hamilton, Quantitative infrared thermography inspection for FRP applied to concrete using single pixel analysis, Constr. Build. Mater. (2010)
M. Marchetti, S. Ludwig, J. Dumoulin, L. Ibos, A. Mazioud, Active Infrared Thermography for Non-Destructive Control for Detection of Defects in Asphalt Pavements, presented at the 9th International Conference on Quantitative Infrared Thermography, Krakow, Poland, 2008
Clark, M.R., McCann, D.M., Forde, M.C., Application of infrared thermography to the non-destructive testing of concrete and masonry bridges, NDT & E Int. 36 (2003) 265–275 CrossRefGoogle Scholar
Manyong Choi, Kisoo Kang, Jeonghak Park, Wontae Kim, Koungsuk Kim, Quantitative determination of a subsurface defect of reference specimen by lock-in infrared thermography, NDT & E Int. 41 (2008) 119–124
Maldague, Theory and Practice of Infrared Technology for Nondestructive Testing, Canada, 2001
Maldague, X., Largouët, Y., Couturier, J.-P., A study of defect depth using neural networks in pulsed phase thermography: modelling, noise, experiments, Revue Générale de Thermique 37 (1998) 704–717 CrossRefGoogle Scholar
D. Balageas, J.-C. Krapez, L. Legrandjacques, F. Lepoutre, H. Petry, Industrial applications of infrared thermography, presented at the 10th International Conference, CP463, Photoacoustic and Photothermal Phenomena, Roma Italy, 1998
U. Galietti, D. Palumbo, G. Calia, F. Ancona, New data analysis to evaluate defects in composite materials using microwaves thermography, presented at the 11th International Conference on Quantitative InfraRed Thermography, University of Naples Federico II, Naples, Italy, 2012
Cuccurullo, G., Berardi, P.G., Carfagna, R., Pierro, V., IR temperature measurements in microwave heating, Infrared Phys. Technol. 43 (2002) 145–150 CrossRefGoogle Scholar
Cuccurullo, G., Pierro, V., A procedure to measure electromagnetic skin depth in microwave heating, Infrared Phys. Technol. 46 (2004) 49–55 CrossRefGoogle Scholar
Güney, K., Simple Design Method for Optimum Gain Pyramidal Horns, AEU – Int. J. Electron. Commun. 55 (2001) 205–208 CrossRefGoogle Scholar
R. Kitchen, RF and Microwave Radiation Safety Handbook, 2nd edition, Oxford, 2001
Pedreño-Molina, J.L., Monzó-Cabrera, J., Pinzolas, M., A new procedure for power efficiency optimization in microwave ovens based on thermographic measurements and load location search, Int. Commun. Heat Mass Transfer 34 (2007) 564–569 CrossRefGoogle Scholar
Monzó-Cabrera, Juan, Pedreño-Molina, J.L., Toledo, A., Feedback control procedure for energy efficiency optimization of microwave-heating ovens, Measurement 42 (2009) 1257–1262 CrossRefGoogle Scholar
M. Bangay, C. Zombolas, Advanced Measurements of Microwave Oven Leakage, presented at the Australian Radiation Protection and Nuclear Safety Agency, Australia, 2004