Russian Journal of Nondestructive Testing

, Volume 55, Issue 5, pp 353–362 | Cite as

Improving the Efficiency of Ultrasonic Testing Based on Additional Information on Defect Scattering Indicatrices

  • R. Kh. RafikovEmail author


An ultrasonic testing (UST) method is proposed that allows one to classify internal defects in welded joints into planar and bulk ones by using defect scattering indicatrices. Dedicated angle twin-crystal transducers of the Duet type with probe angles of 29° and 61°, exciting a head wave in the test object, are employed as a transmitter and receiver for ultrasonic testing. Informative signs of defects based on using their scattering indicatrices are considered. These signs make it possible to improve the reliability of ultrasonic testing results. It is shown that due to the peculiarities of propagation of head waves, defect scattering indicatrices are most informative for the probe angle of 29° (a wedge angle close to the first critical value for the PMMA–aluminum-magnesium-alloy pair of materials) and the probe angle of 61° (the angle close to the value complementing the angle of 29° to 90°). The statistical significance of the results of calculating correlation and concordance coefficients were estimated for given significance levels \(\alpha = \) 0.05 and \(\beta = \) 0.05, where α and β are the probabilities of the errors of the first and second kind, respectively. Correlation matrices were compiled for the obtained defect scattering indicatrices. Additionally, the reliability of the results was verified by comparing the obtained data with a database of previously performed measurements and their results.


ultrasonic testing defect signs planar and volume reflectors depth scattering indicatrix defect identification 



  1. 1.
    Ermolov, I.N., Vopilkin, A.Kh., and Ryzhov-Nikonov, V.I., Sb. mater. nauchno-tekhn. konf. “Voprosy metodiki i tekhniki ul’trazvukovoi spektroskopii” (Coll. Pap. Sci.-Tech. Conf. “Questions of Methods and Techniques of Ultrasonic Spectroscopy”), Kaunas, 1973. p. 19.Google Scholar
  2. 2.
    Shcherbinskii, V.G. and Belyi, V.E., New informative sign of the nature of defects in ultrasonic testing, Defektoskopiya, 1975, no. 3, pp. 27–37.Google Scholar
  3. 3.
    Vopilkin, A.Kh., Difraktsionnye metody v ul’trazvukovom nerazrushayushchem kontrole (Diffraction Methods in Ultrasonic Nondestructive Testing), Moscow: Izd. NTO Priborprom, 1989.Google Scholar
  4. 4.
    Gurvich, A.K., Dymkin, G.Ya., and Tsomuk, S.R., New informative feature of defect shape, Defektoskopiya, 1990, no. 11, pp. 3–7.Google Scholar
  5. 5.
    Perevalov, S.P., Study of geometrical and acoustic characteristics of erosion reflectors, Defektoskopiya, 1994, no. 9, pp. 15–31.Google Scholar
  6. 6.
    Ermolov, I.N., Vopilkin, A.Kh., and Badalyan, V.G., The evolution of tools and methods for determining the shape and size of defects in ultrasonic testing, Kontrol’ Diagn., 2003, no. 2, pp. 6–27.Google Scholar
  7. 7.
    Vopilkin, A.Kh., Badalyan, V.G., and Bazulin, E.G., Ul’trazvukovaya defektometriya metallov s primeneniem golograficheskikh metodov (Ultrasonic Characterization of Defects in Metals by Holographic Methods), Moscow: OOO NPTs Ekho+, 2008, pp. 27–28.Google Scholar
  8. 8.
    Badalyan, V.G., Bazulin, E.G., Vopilkin, A.Kh., et al., Ul’trazvukovaya defektometriya metallov s primeneniem golograficheskikh metodov (Ultrasonic Characterization of Defects in Metals by Holographic Methods), Vopilkin, A.Kh, Ed., Moscow: Mashinostroenie, 2008.Google Scholar
  9. 9.
    Bazulin, E.G., Kokolev, S.A., and Golubev, A.S., Application of an ultrasonic antenna array for registering echo signals by the double-scanning method for obtaining flaw images, Russ. J. Nondestr. Test., 2009, vol. 45, no. 2, pp. 86–97.CrossRefGoogle Scholar
  10. 10.
    Braconnier, D., Detailed study of inspecting thick parts using large aperture phased arrays and DDF, in Braconnier, D., Okuda, S., and Dao, G., in 7th Int. Conf. on NDE in Relation to Structural Integrity for Nuclear and Pressurized Components, Yokohama, Japan, May 12–15, 2009.Google Scholar
  11. 11.
    Konovalov, N.N. and Meleshko, N.V., Visualization of defects of welded joints in ultrasonic testing with phased antenna arrays, MEGATECH Nov. Tekhnol. Industr. Diagn. Bezop., 2011, nos. 2–3, pp. 24–28.Google Scholar
  12. 12.
    ISO/DIS 16827: 2012. Nondestructive testing—Ultrasonic testing—Characterization and sizing of discontinuities.Google Scholar
  13. 13.
    Meleshko, N.V., Research and development of an ultrasonic technique for inspecting welded joints using flaw detectors equipped with antenna arrays (using example of inspecting welded joints of hoisting machines), Cand. (Eng.) Sci. Dissertation, November 5, 2013, Moscow: NUTs KASKAD, MGUPI, 2012.Google Scholar
  14. 14.
    Konovalov, N.N. and Meleshko, N.V., Measurement of the actual height of lacks of fusion in one-sided butt welded joints using ultrasonic flaw detectors with antenna arrays, V mire NK, 2013, no. 1, pp. 45–47.Google Scholar
  15. 15.
    Bazulin, E.G., Restoring the image of reflectors using the C-SAFT method during multiple reflection of echo signals from the boundaries of a cylindrical inspection object, Russ. J. Nondestr. Test., 2013, vol. 49, no. 2, pp. 77–92.CrossRefGoogle Scholar
  16. 16.
    Scherbinskii, V.G., Tekhnologiya ul’trazvukovogo kontrolya svarnykh soyedinenii (Technology of Ultrasonic Testing of Welded Joints), St. Petersburg: SVEN, 2014.Google Scholar
  17. 17.
    Bazulin, E.G., Development of a system of operational ultrasonic nondestructive testing with enhanced information value using antenna arrays, Cand. (Eng.) Sci. Dissertation, Mocow: NPTs Ekho+, 2014.Google Scholar
  18. 18.
    Metodicheskie rekomendatsii o poryadke provedeniya ul’trazvukovogo kontrolya metallicheskikh konstruktsii tekhnicheskikh ustroistv, zdanii i sooruzhenii (Methodological Recommendations on the Procedure for Conducting Ultrasonic Inspection of Metal Frames of Technical Devices, Buildings, and Structures), NTTs Bezop. Prom-sti, 2015, Ser. 32, no. 11.Google Scholar
  19. 19.
    Bazulin, E.G., Vopilkin, A.Kh., and Tikhonov, D.S., Improving the reliability of ultrasonic testing. Part 1. Determination of the type of discontinuity in ultrasound testing with antenna arrays, Kontrol’ Diagn., 2015, no. 8, pp. 7–21.Google Scholar
  20. 20.
    Official website of EXTENDE company. URL: (accessed February 14, 2019).Google Scholar
  21. 21.
    Aleshin, N.P., Belyi, V.E., Vopilkin, A.Kh., et al., Metody akusticheskogo kontrolya metallov (Methods of Acoustic Testing of Metals), Aleshin, N.P., Ed., Moscow: Mashonostroenie, 1989.Google Scholar
  22. 22.
    Gurvich, A.K. and Kuz’mina, L.I., Scattering indicatrices as a source of additional information about revealed defects, Defektoskopiya, 1970, no. 6, pp. 47–56.Google Scholar
  23. 23.
    Nemytova, O.V., Rinkevich, A.B., and Perov, D.V., RF Patent no. 2524451, G01N29/00, Method for determining the type of defect in metal products, Byull. Izobret., 2014, no. 21.Google Scholar
  24. 24.
    Wustenberg, H.A. and Mundry, E., Nondestructive Testing, 1973.Google Scholar
  25. 25.
    Krautkramer,J.H., Werkstoffprufung mit ultrashall. Funfte, Neubearbeitete Auflage unter Mitarbeit von, Berlin–Heidelberg–New York–London–Paris–Tokyo: Springer-Verlag, 1986.Google Scholar
  26. 26.
    Bezopasnost’ Rossii. Pravovyye, sotsial’no-ekonomicheskiye i nauchno-tekhnicheskiye aspekty. Bezopasnost’ promyshlennogo kompleksa (Security of Russia. Legal, Socio-Economic and Scientific and Technical Aspects. Industrial Safety) Moscow: MGF Znanie, NTTs Bezop. Prom-sti Gosgortekhnadzor Ross., 2002.Google Scholar
  27. 27.
    Konovalov, N.N., Rafikov, R.Kh., Preobrazhenskii, M.N., RF Patent No. 2581083. A method for determining the shape of defect scattering indicatrix under ultrasound testing and a device for its implementation, Byull. Izobret., 2016, no. 10.Google Scholar
  28. 28.
    Lange, Yu.V. and Voronkov, V.V., Kontrol’ nerazrushayushchii akusticheskii. Terminy i opredeleniya/Spravochnik (Nondestructive Acoustic Testing. Terms and Definitions. Handbook), Moscow: author’s publication, 2003.Google Scholar
  29. 29.
    Razygraev, N.P. and Razygraev, A.N., Acceptance and operational ultrasonic testing using head waves in echo technique, V mire NK, 2007, no. 4, pp. 8–12.Google Scholar
  30. 30.
    Ermolov, I.N., Razygraev, V.G., and Shcherbinskii, V.G., Use of acoustic waves of head type for ultrasonic testing, Defektoskopiya, 1978, no. 1, pp. 33–40.Google Scholar
  31. 31.
    Meleshko, N.V. and Rafikov, R.Kh., Assessment of the possibility of replacing the ultrasonic method of radiation monitoring of various types of welded joints in ship structures, in Sb. tr. nauchno-prakt. konf. “Aktual’nye problemy priborostroeniya, informatiki i sotsial’no-ekonomicheskikh nauk” (Proc. Sci.-Pract. Conf. “Topical Problems of Instrument Engineering, Computer Science, and Socioeconomic Sciences”) Moscow: MGUPI, 2013, pp. 96–103.Google Scholar
  32. 32.
    Samokrutov, A.A. and Shevaldykin, V.G., Scanning in ultrasonic tomography, V mire NK, 2010, no. 3 (49), pp. 7–10.Google Scholar
  33. 33.
    GOST (State Standard) 14806–80. Arc welding of aluminum and aluminum alloys in inert gases. Welded joints. Main types, structural elements, and dimensions (with Amend. no. 1 of December 1990). Replaced GOST 14806-69. Enacted January 7, 1981, Moscow: Izd. Standartov, 1981.Google Scholar
  34. 34.
    OST5-9153-84. Joints in welded hull structures. Arc welding of aluminum alloys in protective gases. Main provisions. Replaced OST5.9153-73. Enacted January 1, 1986, Moscow: Izd. Standartov, 1986.Google Scholar
  35. 35.
    Voronkov, V.A., Voronkov, I.V., Kozlov, V.N., Samokrutov, A.A., and Shevaldykin, V.G., On the applicability of antenna array technology in ultrasonic testing of hazardous production facilities, V mire NK, 2011, no. 1 (51), pp. 64–70.Google Scholar
  36. 36.
    Rafikov, R.Kh., Influence of the depth of corner reflectors on the angle of the maximum of their scattering indicatrices, Kontrol’ Diagn., 2016, no. 11, pp. 34–41.Google Scholar
  37. 37.
    Konovalov, N.N., Rafikov, R.Kh., Preobrazhenskii, M.N., and Makarov, S.A., Determination of the nature of defects in metals and welded joints using piezoelectric transducers, Tekhnol. Tekhnosfer. Bezop., Acad. State Fire Serv. Minist. Emerg. Situat. Russ., 2015, no. 4 (62). http://agps-2006. Scholar

Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.Northern Directorate of Traction—a Structural unit of Directorate of Traction, a Branch of OAO Rossiskie Zheleznye DorogiYaroslavlRussia

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