The concept of Laser Spot Thermography test rig with real-time data processing


  • J Roemer



The paper shows the concept of Laser Spot Thermography test rig with real time data processing. Laser Spot Thermography is a promising method for non-destructive testing applications especially, when fully non-contact procedure is required. Unfortunately, the procedure as of now is hard to apply, due to technical difficulties related with data processing. Laser thermography test procedure involves recording of multiple sequences (even hundreds), which have to be processed and evaluated as a whole. The industry requires quick and precise results, which is hard to achieve with the amount of output data from the currently known test procedure.  The paper gives a proposal for improving the laser thermography test procedure through data parameterization (curve fitting) for infrared sequences. The data parameterization allows for reduction of output data size, in particular temporary data storage in RAM. The reduction of data size leads to faster real time processing.


MALDAGUE, Xavier, et al. Theory and practice of infrared technology for nondestructive testing. 2001

STANGE, Even, et al. Multiphysics Study of Tensile Testing using Infrared thermography. International Journal of Multiphysics, 2019, 13(2): p.191-202.

STANGE, Even, et al. Qualitative visualization of the development of stresses through infrared thermography. Vestnik of MSTU, 2019, 22(4): p. 503 - 507.

AHMAD, Tanveer, et al. Study of the required thermal insulation (IREQ) of clothing using infrared imaging. International Journal of Multiphysics, 2017, 11(4): p. 413-426.

RASHID, Taimur, et al. Determination of Thermal Properties of Fresh Water and Sea Water Ice using Multiphysics Analysis. International Journal of Multiphysics, 2016; 10(3): p. 277 - 291.

KHAWAJA, Hassan et al. Multiphysics Simulation of Infrared Signature of an Ice Cube. International Journal of Multiphysics, 2016, 10(3): p. 291 - 302.

AHMAD, Tanveer, et al. Study of Wind Chill Factor using Infrared Imaging. International Journal of Multiphysics, 2016, 10(3): p. 325 - 341.

RASHID, Taimur et al. Review of marine icing and anti-/de-icing systems. Review of Marine Engineering & Technology, 2016, 15(2): p. 79 - 87.

RASHID, Taimur, et al. Measuring Thickness of Marine Ice Using IR Thermography. Cold Regions Science and Technology, 2019, 158: p. 221-229.

T. Uhl, M. Szwedo, Ł. Pieczonka, J. Roemer, P. Hellstein. “Damage detection in composite structures using active thermography – case studies”. European congress and exhibition on Advanced materials and processes. Warszawa, Polska, 2015

PIECZONKA, Łukasz; SZWEDO, Mariusz. Vibrothermography. In T. Stepinski, T. Uhl, & W. J. Staszewski (Eds.), Advanced Structural Damage Detection: From Theory to Engineering Applications (pp. 233–261). Wiley. 2013.

ROEMER, Jakub; PIECZONKA, Łukasz; UHL, Tadeusz. Laser spot thermography of welded joints. Diagnostyka, 2014, 15

ROEMER, Jakub, et al. Thermography of metallic and composite structures-review of applications. Int. Work. Smart Mater. Struct. SHM, 2013, 18.11.

ROEMER, Jakub; UHL, Tadeusz; PIECZONKA, L. Laser spot thermography for crack detection in aluminum structures. In: 7th International Symposium on NDT in Aerospace. 2015. p. 1-7.

PIECZONKA, L., et al. Modelling and numerical simulations of vibrothermography for impact damage detection in composites structures. Structural Control and Health Monitoring, 2013, 20.4: 626-638.

PIECZONKA, Łukasz; SZWEDO, Mariusz; UHL, Tadeusz. Investigation of the effectiveness of different thermographic testing modalities in damage detection. In: Key Engineering Materials. Trans Tech Publications, 2013. p. 349-356.

SZWEDO, M. Pieczonka Ł., Uhl T., 2011, Image processing technique for vibrothermographic field tests. In: Proceedings of the 8th International Workshop on Structural Health Monitoring. 2011. p. 13-15.

Workswell s.r.o. (

CERNIGLIA, Donatella; MONTINARO, Nicola. Defect Detection in Additively Manufactured Components: Laser Ultrasound and Laser Thermography Comparison. Procedia Structural Integrity, 2018, 8: 154-162.

ZHANG, Hai, et al. An experimental and analytical study of micro-laser line thermography on micro-sized flaws in stitched carbon fiber reinforced polymer composites. Composites Science and Technology, 2016, 126: 17-26.

MEZGHANI, S., et al. Evaluation of paint coating thickness variations based on pulsed Infrared thermography laser technique. Infrared Physics & Technology, 2016, 76: 393-401.

KEO, Sam Ang, et al. Defect detection in CFRP by infrared thermography with CO2 Laser excitation compared to conventional lock-in infrared thermography. Composites Part B: Engineering, 2015, 69: 1-5.

AN, Yun-Kyu, et al. Line laser lock-in thermography for instantaneous imaging of cracks in semiconductor chips. Optics and Lasers in Engineering, 2015, 73: 128-136.

BEDOYA, A., et al. Measurement of in-plane thermal diffusivity of solids moving at constant velocity using laser spot infrared thermography. Measurement, 2019, 134: 519-526.

HWANG, Soonkyu; AN, Yun-Kyu; SOHN, Hoon. Continuous Line Laser Thermography for Damage Imaging of Rotating Wind Turbine Blades. Procedia Engineering, 2017, 188: 225-232.

MONTINARO, Nicola; CERNIGLIA, Donatella; PITARRESI, Giuseppe. Defect detection in additively manufactured titanium prosthesis by flying laser scanning thermography. Procedia Structural Integrity, 2018, 12: 165-172.

MONTINARO, N.; CERNIGLIA, D.; PITARRESI, G. Flying laser spot thermography technique for the NDE of fibre metal laminates disbonds. CompositeStructures, 2017, 171: 63-76.

ROEMER, J., et al. Nondestructive Testing of Ceramic Hip Joint Implants with Laser Spot Thermography. Archives of Metallurgy and Materials, 2017, 62.4: 2133-2139.



How to Cite

Roemer, J. (2020) “The concept of Laser Spot Thermography test rig with real-time data processing”, The International Journal of Multiphysics, 14(1), pp. 31-38. doi: 10.21152/1750-9548.14.1.31.