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Eddy Current Thermography as a Tool for Detecting the Location and Dimension of Edge Defects in Cr–Mo Steel Plate

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The present study discusses the potential of eddy current thermography in the detection of edge defects in metal plates. The focus is on detecting the defect’s dimension and location for the defects available at the edge of metal plates. We have used a slab of SA387 GR12 (Killed steel) for performing our study. SA387 GR12 (Killed steel) possesses tremendous tensile and yield strength. The combination of chromium-molybdenum provides corrosion-combating skills along with improved tensile strength at higher temperatures. It has wide applications in the field of power (especially thermal power plants), oil and chemical industry, construction sector etc. as heat exchangers, pressure vessels, industrial boilers, piping industry and in piping support structures, sour service environments etc. Small cracks in any component can cause catastrophic failures. So it becomes a necessity to detect the crack in the initial stage itself, especially to avoid stress concentration in processes like rolling of steel plates. The study is performed on a SA387 GR12 sample with defects created at various angles. Similar cracks can also be found in rails, created because of rolled contact fatigue. Hence the study is going to be useful for the detection of defects in rails also. ECT offers further possibilities in the area of automation and has various advantages in comparison to conventional methods and the same is also discussed in the work.


  • Edge defects detection
  • Induction thermography
  • Eddy current thermography (ECT)
  • A387 GR12 inspection

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  • DOI: 10.1007/978-981-16-9093-8_3
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  1. Zenzinger G, Bamberg J, Satzger W, Carl V (2007) Thermographic crack detection by eddy current excitation. NDT&E 22:101

    Google Scholar 

  2. Tian GY, He Y et al (2016) Eddy current pulsed thermography with different excitation configurations for metallic material and defect characterization. Sensors 16:843

    Google Scholar 

  3. He Y, Tian GuiYun, Pan M, Chen D (2013) Eddy current pulsed phase thermography and feature extraction. Appl Phys Lett 103:84104

    CrossRef  Google Scholar 

  4. Abidin IZ, Tian GY, Wilson J, Yang S, Almond D (2010) Quantitative evaluation of angular defects by pulsed eddy current thermography. NDT&E Intl 43:543

    Google Scholar 

  5. Netzelmann U, Walle G (2008) Induction thermography as a tool for reliable detection of surface defects in forged components. In: 17th world conference on nondestructive testing, pp 25–28. Shanghai, China

    Google Scholar 

  6. Vrana J, Goldammer M, Baumann J, Rothenfusser M, Arnold W (2008) Mechanisms and models for crack detection with induction thermography. In: AIP conference proceedings

    Google Scholar 

  7. Oswald-Tranta B, Wally G Thermo-inductive surface crack detection in metallic materials. ECNDT 2006—We.3.8.3

    Google Scholar 

  8. Wally G, Oswald-Tranta B The influence of crack shapes and geometries on the result of the thermo-inductive crack detection. Thermosense XXIX edition

    Google Scholar 

  9. Yang S, Tian GY, Abidin IZ, Wilson J (2011) Simulation of edge cracks using pulsed eddy current stimulated thermography. J Dyn Syst Meas Control 133

    Google Scholar 

  10. Wilson J, Tian GY, Mukriz IZ, Almond D (2011) PEC thermography for imaging multiple cracks from rolling contact fatigue. NDT&E Int 44:505–512

    Google Scholar 

  11. Aesteiron Steels LLP. Retrieved on Dec 2018

  12. Goldammer M, Mooshofer H, Rothenfusser M, Bass J, Vrana J (2010) Automated induction thermography of generator components. AIP Conf Proc 1211:451

    CrossRef  Google Scholar 

  13. Netzelmann U, Walle G, Lugin S, Ehlen A, Bessert S, Valeske B (2016) Induction thermography: principle, applications and first steps towards standardization. Quant IR Therm J 13:170

    CrossRef  Google Scholar 

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Correspondence to Nakul Kumar .

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© 2022 Indian Society for Non-destructive Testing

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Kumar, N., Joseyphus, R.J. (2022). Eddy Current Thermography as a Tool for Detecting the Location and Dimension of Edge Defects in Cr–Mo Steel Plate. In: Mandayam, S., Sagar, S.P. (eds) Advances in Non Destructive Evaluation. NDE 2020. Lecture Notes in Mechanical Engineering. Springer, Singapore.

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  • Print ISBN: 978-981-16-9092-1

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