2018 №01 (05) DOI of Article
2018 №01 (07)

Technical Diagnostics and Non-Destructive Testing 2018 #01
Technical Diagnostics and Non-Destructive Testing №1, 2018, pp. 42-46

Method of electromagnetic-acoustic monitoring of metal products without the «dead zone»

S.Yu. Plesnetsov, G. M. Suchkov

National Technical University «Kharkov Polytechnic Institute», 2 Kirpicheva str., 61002, Kharkov. E-mail: hpi.suchkov@gmail.com
A method of detection of surface, near-surface and subsurface defects in metal items in a layer up to 30 – 50 mm thick was developed. It was realized with application of a combined electromagnetic-acoustic transducer, one part of which emits pulses of bulk waves, and the second receives surface and bulk waves. Experimental studies of the method and transducer confirmed the high effectiveness of defect detection in the surface layer. Amplitude of received echo-signals relative to the noise level reached 54 dB. Method and transducers can be applied at flaw detection in practically any metal products in manual and automatic mode. 10 References, 3 Figures.
Keywords: defect, electromagnetic-acoustic transducer, ultrasonic waves, pulse, surface waves, diffraction, transformation
Received: 22.01.2018
Published: 20.03.2018

1. Dragobetskii, V. V., Shapoval, A. A., Zagoryanskii, V. G. (2015) Development of Elements of Personal Protective Equipment of New Generation on the Basis of Layered Metal Compositions. Steel in Translation, 45, 1, 33–37. https://doi.org/10.3103/S0967091215010064
2. Dragobetskii, V. V., Shapoval, A. A., Mospan, D. V. et al. (2015) Excavator Bucket Teeth Strengthening Using a Plastic Explosive Deformation. Metallurgical and Mining Industry, 4, 363–368.
3. Shapoval, A. A., Mospan, D. V. & Dragobetskii, V. V. (2016) Ensuring High Performance Characteristics for Explosion-Welded Bimetals. Metallurgist, 60, 3, 313–317. https://doi.org/10.1007/s11015-016-0292-9
4. Gorbatyuk, S. M., Shapoval, A. A., Mospan, D. V., Dragobetskii V. V. (2016) Production of Periodic Bars by Vibrational Drawing. Steel in Translation, 46, 7, 474–478. https://doi.org/10.3103/S096709121607007X
5. Zenghua, L. A., L. Zenghua, W. Bin et al. (2007) New Type Transducer for Torsional Guided Wave Generation and Its Application to Defect Detection in Pipes. Insight, 49(1), 41–43. https://doi.org/10.1784/insi.2007.49.1.41
6. R. P. Migushchenko, G. M. Suchkov, O. N. Petrishchev, V. F. Bolyukh, S. Yu. Plesnetsov, A. I. Kocherga. (2017) information-measuring electromechanical transducers for assessing the quality of the surface of ferromagnetic metal items by ultrasonic waves Rayleigh. Tekhnichna elektrodynamika, 2, 79–88. [in Russian]
7. S.Yu. Plesnetsov, O.N. Petrishchev, R.P. Migushchenko, G.M. Suchkov. (2017) Modeling of electromagnetic-acoustic conversion when excited torsional waves. Ibid, 3, 79–88. [in Russian] https://doi.org/10.15407/techned2017.03.079
8. Tolipov, K. B. (2017) Possibilities for Increasing the Efficiency of Contactless Emitters of Acoustic Waves. Russian Journal of Nondestructive Testing, 53, 4, 304–307. https://doi.org/10.1134/S106183091704009X
9. Suchkov, G. M., Petrishchev O. N., Cherednichenko I. V. et al. (2012) A Generator of Probing Pulses for EMA Flaw Detectors. Ibid, 48, 9, 537–540. https://doi.org/10.1134/S1061830912090082
10. Мигущенко Р. П., Сучков Г. М., Петрищев О. Н., Десятниченко А. В. (2016) Теория и практика электромагнитно-акустического контроля. Часть 5. Особенности конструирования и практического применения ЭМА устройств ультразвукового контроля металлоизделий. Харьков, ООО «Планета-принт».
11. Migushchenko, R.P., Suchkov, G.M., Petrishchev, O.N., Desyatnichenko, A.V. (2016) Theory and practice of electromagnetic-acoustic monitoring. Pt 5: Peculiarities of design and practical application of ultrasonic testing EMA systems of metal products. Kharkov, Planeta-print [in Russian].