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Thermographic Tests of Curved GFRP Structures with Delaminations: Numerical Modelling vs. Experimental Validation
Authors: P. D. Pastuszak
Abstract:The present work is devoted to thermographic studies of curved composite panels (unidirectional GFRP) with subsurface defects. Various artificial defects, created by inserting PTFE stripe between individual layers of a laminate during manufacturing stage are studied. The analysis is conducted both with the use finite element method and experiments. To simulate transient heat transfer in 3D model with embedded various defect sizes, the ANSYS package is used. Pulsed Thermography combined with optical excitation source provides good results for flat surfaces. Composite structures are mostly used in complex components, e.g., pipes, corners and stiffeners. Local decrease of mechanical properties in these regions can have significant influence on strength decrease of the entire structure. Application of active procedures of thermography to defect detection and evaluation in this type of elements seems to be more appropriate that other NDT techniques. Nevertheless, there are various uncertainties connected with correct interpretation of acquired data. In this paper, important factors concerning Infrared Thermography measurements of curved surfaces in the form of cylindrical panels are considered. In addition, temperature effects on the surface resulting from complex geometry and embedded and real defect are also presented.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1112121Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1330
 D. Wu, G.Busse, “Lock-in thermography for nondestructive evaluation of materials”, Revue Generale de Thermique 1998; 37 (8) pp. 693–703.
 D. Wu, et al., “Nondestructive inspection of turbine blades with lock-in Thermography”, Materials Science Forum 1996; 210–213, pp. 289–94.
 T. Zweschper, A. Dillenz, G. Busse, “Ultrasound lock-inthermography - a defect-selective NDT method for the inspection of aerospace components” Insight: Non Destructive Testing and Condition Monitoring 2001; 43, pp. 173–9.
 M. R. Valluzzi, E. Grinzato, C. Pellegrino, C. Modena, “IR thermography for interface analysis of FRP laminates externally bonded to RC beams”, Materials and Structures (2009) 42, pp. 25–34.
 F. Mabrouki, M. Genest, G. Shi, A.Fahr, “Numerical modeling for thermographic inspection of fiber metal laminates”, NDT&E International 42 (2009), pp. 581–588.
 N. Krohna, A. Dillenza, K. Nixdorf, R. Voit-Nitschmann, G. Busse, “NDT of shape adaptive structures” NDT&E International 34 (2001) pp. 269-276.
 M. Vikström, J. Bäcklund, K. A. Olsson, “Non-destructive testing of sandwich constructions using thermography”, Composite Structures, Vol. 13, Issue 1, 1989, pp. 49-65.
 T. D Orazio, C. Guaragnella, M. Leoa, P. Spagnolo, “Defect detection in aircraft composites by using a neural approach in the analysis of thermographic images”, NDT&E International 38 (2005), pp. 665–673.
 N. P. Avdelidisa, D. P. Almond, A. Dobbinson, B. C. Hawtinb, C. Ibarra-Castanedod, X. Maldague, “Aircraft composites assessment by means of transient thermal NDT”, Progress in Aerospace Sciences 40 (2004) pp. 143–162.
 L. Minh Phong, “Fatigue limit evaluation of metals using an infrared thermographic technique”, Mech Mater 28, (1-4), pp. 155-63, 1998.
 L. Zhang, X. S. Liu, S. H. Wu, Z. Q. Ma, H. Y. Fang, “Rapid determination of fatigue life based on temperature evolution”, International Journal of Fatigue 54 (2013) 1–6.
 M. Quaresimin. “Fatigue of woven composite laminates under tensile and compressive loading”, ECCM-10, Brugge, Belgium, 3–7 June 2002.
 C. Colombo, F. Libonati, F. Pezzani, A. Salerno, L. Vergani, “Fatigue behaviour of a GFRP laminate by thermographic measurements”, Eng Procedia 2011;10:3518–27.
 K. L. Reifsnider, R. S. Williams, “Determination of fatigue related heat emission in composite materials”, Exp Mech 1974; 14(12), pp. 479–85.
 C. Colombo, L. Vergani, “Influence of delamination on fatigue properties of a fibreglass composite”, Composite Structures 107 (2014), pp. 325–333.
 M. Mieloszyk, M. Krawczuk, P. Malinowski, T. Wandowski and W. Ostachowicz, “Active Thermography Method for Delamination Detection and Localisation in Composite Structures”, in Proceedings of 6th European Workshop on Structural Health Monitoring - Fr.2.B.4, Germany, July 3 – 6, 2012.
 K. Ghadermazi, M.A. Khozeimeh, F. Taheri-Behrooz, M.S. Safizadeh, “Delamination detection in glass–epoxy composites using step-phase thermography (SPT)”, Infrared Physics & Technology 72 (2015) 204–209
 K. Kromine, P. A. Fomitchov, S. Krishnaswamy, J. D. Achenbach, “Laser ultrasonic detection of surface breaking discontinuities: scanning laser source technique” Mater Eval, 58(2):173–7, 2000.
 P. Y. Joubert, Y. Diraison, J. Pinassaud, “A linear magneto-optical imager for nondestructive evaluation”, Int J Appl Electrom Mech, 25 (1–4): 297–305, 2007.
 Gilles-Pascaud and J.M. Decitre, “Eddy current array probe for the control of small surfacebreaking flaws”, (in French), In: Proceedings of the Les Journées COFREND, Paris, France; May 2005.
 L. D. Favro, X. Han, Z. Ouyang, G. Sun, R. L. Thomas, “Sonic IR imaging of cracks and delamination” Anal Sci, 17:451–3, 2001.
 M. Krishnapillai, R. Jones, I. H. Marshall, M. Bannister, N. Rajic, “Thermography as a tool for damage assessment”, Composite Structures 67 (2005), pp. 149-155.
 M. Krishnapillai, R. Jones, I. H. Marshall, M. Bannister, N. Rajic, “NDTE using pulse thermography: Numerical modelling of composite subsurface defects: Composite Structures 75 (2006), pp. 241–249.
 X. P. V. Maldaque, “Introduction to NDT by Active Infrared Thermography”, Materials Evaluation, 2002, 6 (9) 1060 -1073.
 Ibarra-Castaneda C., Piau J.-M., Guilbert S., Avdelidis N.P., Genest M., Bendada A., Maldague H.P.V., Comparative study of active thermography techniques for the nondestructive evaluation of honeycomb structures, Research in Nondestructive Evaluation, 20, 1, 1–31, 2009.
 Ibarra-Castanedo, N. P. Avdelidis, M. Grenier, X. Maldague and A. Bendada, "Active thermography signal processing techniques for defect detection and characterization on composite materials", Proc. SPIE 7661, Thermosense XXXII, 76610O (May 03, 2010); doi:10.1117/12.850733.
 Ibarra-Castanedo, M. Genest, J-M. Piau, S. Guibert, A. Bendada, and X. Maldague, “Chapter 14: Active Infrared Thermography Techniques for the Nondestructive Testing of Materials”, Book: Ultrasonic and Advanced Methods for Nondestructive Testing and Material Characterization, pp. 325-348, eISBN 978-981-277-094-3, Editor: C.H. Chen, World Scientific Publishing, 2007.
 X. P. V. Maldaque, Theory and practice of infrared technology for nondestructive testing, John Wiley & Sons, Inc., New York - Toronto, 2001.
 Vollmer M., Mollmann K.P., Infrared Thermal Imaging; Fundamentals, Research and Applications, WILEY-VCH Verlag GmbH& Co. KGaA, Weinheim, Germany 2010.
 Maldague X.P.V., Moore P. O., eds., Nondestructive Testing Handbook, Vol. 3: Infrared and Thermal Testing, 3rd ed., American Society for Nondestructive Testing, Columbus, Ohio, 2001.
 Holman J.P., Heat Transfer, New York, McGraw-Hill, 1972, p. 528.
 Ibarra-Castanedo C., Quantitative subsurface defect evaluation by Pulsed Phase Thermography: Depth retrieval with the phase, PhD thesis, University Laval, 2005.
 Vijayaraghavan G.K., Sundaravalli S., Analysis of delaminations in GRP pipes using infrared thermography, LAP LAMBERT Academic Publishing, Germany 2010.