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Contextual Application of Pulse-Compression and Multi-frequency Distance-Gain Size Analysis in Ultrasonic Inspection of Forging

Abstract

Ultrasonic pulse-echo non-destructive testing, combined with Distance Gain Size (DGS) analysis, is still the main method used for the inspection of forgings such as shafts or discs. This method allows the inspection to be carried out, assuring in turns the necessary sensitivity and defect detection capability in most of the cases. However, when testing large or highly attenuating samples with standard pulse-echo, the maximum achievable signal-to-noise ratio is limited by both the beam energy physical attenuation during the propagation and by the inherent divergence of any ultrasound beam emitted by a finite geometrical aperture. To face this issue, the application of the pulse-compression technique to the ultrasonic inspection of forgings was proposed by some of the present authors, in combination with the use of broadband ultrasonic transducers and broadband chirp excitation signals. Here, the method is extended by applying DGS analysis to the pulse-compression output signal. Both standard single-frequency/narrowband DGS and multi-frequency/broadband DGS analyses applied on pulse-compression data acquired on a forging with known defects are tested and compared. It is shown that the DGS analysis works properly with pulse-compression data collected by using a separate transmitter and receiver transducers. Narrowband analysis and broadband analyses provide almost identical results, but the latter exhibits advantages over the traditional method: it allows the inspection frequency to be optimized by using a single pair of transducers and with a single measurement. In addition, the range resolution achieved is higher than the one achievable for the narrowband case.

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References

  1. 1.

    Krautkramer, J.: Determination of the size of defects by the ultrasonic impulse echo method. Br. J. Appl. Phys. 10, 240–245 (1959)

  2. 2.

    Krautkrämer, J., Krautkrämer, H.: Detection and classification of defects. In: Ultrasonic Testing of Materials, pp. 312–329. Springer, Berlin (1990)

  3. 3.

    Distance Gain Sizing Technique, European Standard DIN EN583-2:2001

  4. 4.

    Ricci, M., Senni, L., Burrascano, P., Borgna, R., Neri, S., Calderini, M.: Pulse-compression ultrasonic technique for the inspection of forged steel with high attenuation. Insight-Non-Destr. Test. Cond. Monit. 54(2), 91–95 (2012)

  5. 5.

    Mohamed, I., Hutchins, D., Davis, L., Laureti, S., Ricci, M.: Ultrasonic NDE of thick polyurethane flexible riser stiffener material. Nondestr. Test. Eval. 32(4), 343–362 (2017)

  6. 6.

    Turin, G.L.: An introduction to matched filters. IRE Trans. on Inf. Theory 6(3), 311–329 (1960)

  7. 7.

    Misaridis, T., Jensen, J.A.: Use of modulated excitation signals in medical ultrasound. Part I: basic concepts and expected benefits. IEEE Trans. Ultrason. Ferroelectr. Freq. Control 52(2), 177–191 (2005)

  8. 8.

    Burrascano, P., Callegari, S., Montisci, A., Ricci, M., Versaci, M. (eds.): Ultrasonic Nondestructive Evaluation Systems: Industrial Application Issues. Springer, New York (2014)

  9. 9.

    Hutchins, D., Burrascano, P., Davis, L., Laureti, S., Ricci, M.: Coded waveforms for optimised air-coupled ultrasonic nondestructive evaluation. Ultrasonics 54(7), 1745–1759 (2014)

  10. 10.

    Novak, A., Simon, L., Kadlec, F., Lotton, P.: Nonlinear system identification using exponential swept-sine signal. IEEE Trans. Instrum. Meas. 59(8), 2220–2229 (2010)

  11. 11.

    Pollakowski, M., Ermert, H.: Chirp signal matching and signal power optimization in pulse-echo mode ultrasonic nondestructive testing. IEEE Trans. Ultrason. Ferroelectr. Freq. Control 41(5), 655–659 (1994)

  12. 12.

    Challis, R.E., Ivchenko, V.G.: Sub-threshold sampling in a correlation-based ultrasonic spectrometer. Meas. Sci. Technol. 22(2), 025902 (2011)

  13. 13.

    Ricci, M., Senni, L., Burrascano, P.: Exploiting pseudorandom sequences to enhance noise immunity for air-coupled ultrasonic nondestructive testing. IEEE Trans. Instrum. Meas. 61(11), 2905–2915 (2012)

  14. 14.

    Burrascano, P., Laureti, S., Senni, L., Ricci, M.: Pulse compression in nondestructive testing applications: reduction of near sidelobes exploiting reactance transformation. IEEE Trans. Circuits Syst. I Regul. Pap. 99, 1–11 (2018)

  15. 15.

    Pallav, P., Gan, T.H., Hutchins, D.: Elliptical-Tukey chirp signal for high-resolution, air-coupled ultrasonic imaging. IEEE Trans. Ultrason. Ferroelectr. Freq. Control 54(8), 1530–1540 (2007)

  16. 16.

    Schmerr, L., Song, J.S.: Ultrasonic Nondestructive Evaluation Systems. Springer, New York (2007)

  17. 17.

    Certo, M., Nardoni, G., Nardoni, P., Feroldi, M., Nardoni, D.: DGS curve evaluation applied to ultrasonic phased array testing. Insight-Non-destr. Test. Cond. Monit. 52(4), 192–194 (2010)

  18. 18.

    Krautkrämer, J., Krautkrämer, H.: Ultrasonic Testing of Materials. Springer, New York (2013)

  19. 19.

    Kleinert, W.: Defect Sizing Using Non-destructive Ultrasonic Testing: Applying Bandwidth-dependent Dac and Dgs Curves. Springer, New York (2016)

  20. 20.

    Fendt, K.T., Mooshofer, H., Rupitsch, S.J., Ermert, H.: Ultrasonic defect characterization in heavy rotor forgings by means of the synthetic aperture focusing technique and optimization methods. IEEE Trans. Ultrason. Ferroelectr. Freq. Control 63(6), 874–885 (2016)

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Acknowledgements

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 722134—NDTonAIR.

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Correspondence to M. Ricci.

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Rizwan, M.K., Senni, L., Burrascano, P. et al. Contextual Application of Pulse-Compression and Multi-frequency Distance-Gain Size Analysis in Ultrasonic Inspection of Forging. J Nondestruct Eval 38, 72 (2019). https://doi.org/10.1007/s10921-019-0612-7

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Keywords

  • Ultrasonic
  • Forging inspection
  • Pulse compression
  • Distance gain size curves