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Eddy Current Thermography with Adaptive Carrier Algorithm for Non-destructive Testing of Debonding Defects in Thermal Barrier Coatings

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Abstract

Interfacial defects can cause the premature failure of thermal barrier coatings (TBCs). An Eddy current thermography (ECT) method under the transmission mode in the heating phase is developed in this study to detect the artificial debonding defects in TBCs samples. When ECT is used, the temperature distribution of specimen surface is uneven on account of geometric heating effect, skin effect, edge effect and abnormal emissivity. Among them, the influence of the surface emissivity is the smallest, because the background noise is subtracted before the thermal images are processed. The uneven temperature distribution shields the weak thermal response characteristics of the defects and interferes with the identification of the defects. Adaptive carrier algorithms are established as post-processing algorithms to resolve this problem. The feasibility and validity of the developed methods are verified by simulation and validation tests using TBCs samples with a 2 mm artificial debonding defect and a 0.5 mm blind-hole defect.

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References

  1. Schulz, U., Leyens, C., Fritscher, K.: Some recent trends in research and technology of advanced thermal barrier coatings. Aerosp. Sci. Technol. 7, 73–80 (2003)

    Article  Google Scholar 

  2. Vaben, R., Jarligo, M.O., Steinke, T.: Overview on advanced thermal barrier coatings. Surf. Coat. Technol. 205, 938–942 (2010)

    Article  Google Scholar 

  3. Padture, N., Gell, M., Jordan, E.: Thermal barrier coatings for gas-turbine engine applications. Science 296(5566), 280–4 (2002)

    Article  Google Scholar 

  4. Choi, S.R., Hutchinson, J.W., Evans, A.G.: Delamination of multilayer thermal barrier coatings. Mech. Mater. 31, 431–47 (1999)

    Article  Google Scholar 

  5. Blomme, E., Bulcaen, D., Declercq, F.: Air-coupled ultrasonic NDE: experiments in the frequency range 750 kHz–2 MHz. NDT&E Int. 35(7), 417–426 (2002)

    Article  Google Scholar 

  6. Vincent, A., Moughil, A.: Ultrasonic characterization of zirconia-based thermal barriers. NDT&E Int. 22(5), 283–291 (1989)

    Article  Google Scholar 

  7. Huang, H., Liu, C.: Evaluation of TGO growth in thermal barrier coatings using impedance spectroscopy. Rare Met. 30, 643–646 (2011)

    Article  Google Scholar 

  8. Shepard, S.M., Ahmed, T., Rubadeux, B.A.: Synthetic processing of pulsed thermographic data for inspection of turbine components. Insight 43(9), 587–589 (2001)

    Google Scholar 

  9. Zhao, S.B., Zhang, C.L., Wu, N.M.: Quality evaluation for air plasma spray thermal barrier coatings with pulsed thermography. Prog. Nat. Sci. 21, 301–306 (2011)

    Article  Google Scholar 

  10. Yang, S., Tian, G.Y., Abidin, I.Z.: Simulation of edge cracks using pulsed Eddy current stimulated. J. Dyn. Syst. Meas. Control 133, 1–6 (2011)

    Article  Google Scholar 

  11. Oswald-Tranta, L., Wally, G.: Thermo-inductive surface crack detection in metallic materials. In: Conference of NDT. vol. 3.8.3, pp. 1–8 (2006)

  12. Noethen, M., Wolter, K.J., Meyendorf, J.: Surface crack detection in ferritic and austenitic steel components using inductive heated thermography. In: ISSE, pp. 249–254 (2010)

  13. Tian, G.Y., Wilson, J., Cheng, L., et al.: Pulsed Eddy current thermography and applications. In: New Developments in Sensing Technology for Structural Health Monitoring. Springer, Berlin, pp. 205–231 (2011)

  14. Ali, S., Tian, G.Y., David, T.: A feature extraction technique based on principal component analysis for pulsed Eddy current NDT. NDT&E Int. 36, 37–41 (2003)

    Article  Google Scholar 

  15. Ptaszek, G., Cawley, P., Almond, D.: Artificial disbonds for calibration of transient thermography inspection of thermal barrier coating system. NDT&E Int. 45, 71–78 (2012)

    Article  Google Scholar 

  16. Cheng, L., Tian, G.Y.: Comparison of nondestructive testing methods on detection of delaminations in composites. J. Sens. (2012). https://doi.org/10.1155/2012/408437

  17. Cheng, L., Tian, G.Y.: Surface crack detection for carbon fiber reinforced plastic (CFRP) materials using pulsed Eddy current thermography. IEEE Sens. J. 11(12), 3261–3268 (2011)

    Article  Google Scholar 

  18. Pan, M.C., He, Y.Z., Tian, G.Y.: Defect characterisation using pulsed Eddy current thermography under transmission mode and NDT applications. NDT&E Int. 52, 28–36 (2012)

    Article  Google Scholar 

  19. Siakavellas, N.J.: The influence of the heating rate and thermal energy on crack detection by Eddy current thermography. J. Nondestruct. Eval. 35(2), 29 (2016)

    Article  Google Scholar 

  20. Parker, W.J., Jenkins, P.J., Butler, C.P.: Flash method of determining thermal diffusivity, heat capacity, and thermal conductivity. J. Appl. Phys. 32, 1679–1684 (1961)

    Article  Google Scholar 

  21. Carslaw, H.S., Jaeger, J.C.: Conduction of Heat in Solids. Osford University Press, New York (1959)

    MATH  Google Scholar 

  22. Ptaszek, G., Cawley, P., Almond, D.: Transient thermography testing of unpainted thermal barrier coating (TBC) systems. NDT&E Int. 59, 48–56 (2013)

    Article  Google Scholar 

Download references

Acknowledgements

The authors are grateful to the financial support from the National Natural Science Foundation of China (11232008, 11372037 and 11572041).

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Authors and Affiliations

  1. School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China

    Wenying Zhu, Zhanwei Liu & Dacheng Jiao

  2. AML, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China

    Huimin Xie

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  1. Wenying Zhu
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  2. Zhanwei Liu
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  3. Dacheng Jiao
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  4. Huimin Xie
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Correspondence to Zhanwei Liu or Huimin Xie.

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Zhu, W., Liu, Z., Jiao, D. et al. Eddy Current Thermography with Adaptive Carrier Algorithm for Non-destructive Testing of Debonding Defects in Thermal Barrier Coatings. J Nondestruct Eval 37, 31 (2018). https://doi.org/10.1007/s10921-018-0483-3

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  • DOI: https://doi.org/10.1007/s10921-018-0483-3

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