Laser spot thermography – scanning mode
DOI:
https://doi.org/10.21152/1750-9548.13.1.85Abstract
The paper shows experimental results of fatigue crack detection, performed by laser spot thermography and vibrothermography techniques. The experiments were conducted on aluminium bar with artificially introduced crack. The paper contains theoretical background of both techniques. Also test setups including the control and signal processing software were presented and described. Semi-automatic algorithm for data processing was presented. The algorithm allows for automating measurement procedure, which limits the operator input. The paper shows that both laser spot thermography, as well as, vibrothermography can be effectively used for crack detection in metallic structures.
References
P. O. Moore (Ed.), Nondestructive Testing Handbook, American Society for Nondestructive Testing, 2012, Vol. 10.
T. Stepinski, T. Uhl, W. Staszewski, eds., Advanced Structural Damage Detection: From Theory To Engineering Applications Wiley, 2013. https://doi.org/10.1002/9781118536148
W. Staszewski, C. Boller, G. Tomlibson. Health Monitoring of Aerospace Structures. Willey. 2004.
T. Sakagami, S. Kubo. Applications of Pulse Heating Thermography and Lock-in Thermography to Quantitative Nondestructive Evaluations. Infrared Physics &Technology, 2002. https://doi.org/10.1016/s1350-4495(02)00141-x
W. Rummel. "Nondestructive Inspection Reliability - History,Status and Future Path. 18th World Conference on Nondestructive Testing", 2010, 16-20 April.
U. Halabe, H. DangaRao, H. Siriwardane, P. Klinkhachorn. "Review of Nondestructive Evaluation Techniques for FRP Composite Structure Components’. 2007.
Y. Hung, at all. Review and Comparison of Sherography and Active Thermography for Nondestructive Evaluations. College of Science and Engineering., 2009, Report 64.
X. Maldague, eds., Theory and Practice of Infrared Technology for Nondestructive Testing,Wiley, 2001.
C. Hermosilla-Lara, P. Joubert, D. Placko. Identyfication of Physical Effects in Flying Spot Phototermal Non-Destructive Testing.The European Journal Applied Physics, 2003. https://doi.org/10.1051/epjap:2003081
S. Burrowsm A. Rashed, D. Almondm S. Dixon. Combined Laser Spot Imaging Thermography and Ultrasonic Measurements for Crack Detection. Nondestructive Testing and Evaluation, 2007. https://doi.org/10.1080/10589750701448605
T. Li, D. Almond, D. Andrew, S. Rees. Crack Imaging by Scanning Pulsed Laser Spot Thermography. NDT&E International, 2010. https://doi.org/10.1016/j.ndteint.2010.08.006
T. Almond, D. Rees. Crack Imaging by Scanning Laser-line Thermography and Laser-spot Thermography,Measurement Science &Technology, 2011. https://doi.org/10.1088/0957-0233/22/3/035701
J. Roemer, Ł. Pieczonka, T. Uhl. Laser Spot Thermography of Welded Joints. Diagnostyka, No. 2. 2014, Vol. 15.
E. Gamalay, A. Rode, V. Tikhonchuk, B. Luther-Davies. Ablation of Solids by Femtosecond Lasers: Ablation Mechanism and Ablation Thresholds for Metals and Dielectrics.Physical Review Letters,2001. https://doi.org/10.1063/1.1447555
A. Yun-Kyu, K. Ji, S. Hoon. Laser Lock-in Thermography for Fatigue Crack Detection. Department of Civil &Environmental Engineering, 2013
M. Szwedo, Ł. Pieczonka, T. Uhl. Vibrothermographic Testing of Structures.Key Eng. Mater, 2012, vol. 218. https://doi.org/10.4028/www.scientific.net/kem.518.418
L. Pieczonka, M. Szwedo, T. Uhl. Investigation of the Effectiveness of Different Thermographic Testing Modalities in Damage Detection.Key Eng. Mater, 2013, vol. 558. https://doi.org/10.4028/www.scientific.net/kem.558.349
G. Bolu, A. Gachanganm, G. Pierce, G. Harvey, Reliable Thermosonic Inspection of Aero Engine Turbine Blades, Thermosonics, 2010. https://doi.org/10.1784/insi.2010.52.9.488
C. Homma, M. Rothenfusser, J. Bauman, R. Shannon, Study of the Heat Generation Mechanism in Acoustic Thermography,Quantitative Nondestructive Evaluation. AIP Conference Proceedings, 2006, Vol. 820.
J. Roemer, Ł. Pieczonka, M. Szwedo, T. Uhl, W. Staszewski. Thermography of Metallic and Composite Structures – review of applications.The e-Journal of Nondestructive Testing, 2013
J. Roemer, Ł. Pieczonka, T. Uhl. Laser spot thermography of ceramic materials. Advances in Technical Diagnostics, 2016. https://doi.org/10.1007/978-3-319-62042-8_15
J. Roemer, Ł. Pieczonka, M. Juszczyk, T. Uhl Nondestructive testing of ceramic hip joint implants with laser spot thermography. Committee of Metallurgy, 2017. https://doi.org/10.1515/amm-2017-0315
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