Creation of Ultrasonic Equipment for Strengthening and Relaxation Treatment of Welded Structures in Railcar Building

A new modification of portable ultrasonic equipment (0.8 kW power, digitally controlled) has been developed for strengthening and relaxation treatment of metallic product surface. A batch of such devices has been produced; the design documents on the ultrasonic generator and impact instrument with a piezoceramic transducer have been prepared. Preparation of ultrasonic impact treatment technique for welded structures has been accomplished. The comparative tests related to the effects of different types of treatment and applied materials of welded structures on fatigue life have showed the expediency of ultrasonic impact treatment for the prolongation of operation life of products.

1. Lobanov, L.M., Kiryan, V.I., Knysh, V.V., and Prokopenko, G.I.: Raise of Fatigue Resistance of Metal Welded Joints by High-Frequency Mechanical Forging (Review). Automatic Welding, 9, 3-11 (2006) (in Russian)
2. Trufiakov, V.I.: Raise of Fatigue Resistance of Welded Joints and Constructions. Automatic Welding, 11, 11-19 (1998) (in Russian)
3. Trufiakov, V.I., Mikheev, P.P., and Kudryavtsev, Y.F. (1995). Fatigue Strength of Welded Structures. Residual Stresses and Improvement Treatments. London: Harword Academic Publishers GmbH
4. Lurie, G.B. and Steinberg, Ya.I. (1971). Strengthening and Finishing Treatment of Working Surfaces of Machine Parts by Surface Plastic Deformation. Moscow: Mechanical Engineering (in Russian)
5. Kudryavtsev, I.V. and Naumenkov, N.E. (1976). Fatigue of Welded Structures. Moscow: Mechanical Engineering (in Russian)
6. Krivko, V.P. and Prokopenko, G.I.: Ultrasonic Treatment of Welded Joints. Welding, 5, 32-34 (1979) (in Russian)
7. Prokopenko, G.I., Nedoseka, P.Ya., Gruzd, A.A., and Krasovskii, T.A.: Development and optimization of equipment and process of ultrasonic impact treatment of welded joints to reduce the residual stress. Technical Diagnostics and Nondestructive Testing, 3, 14-22, (1995) (in Russian)
8. Patent of Ukraine no. 60390. Lobanov, L.M., Mikheev, P.P., Prokopenko, G.I., Knysh, V.V., Kudryavtsev, Yu.P., Mordyuk, B.N., and Kleiman, Ya.I.: Treatment of Welded Joints by High-Frequency Metal Forging Technique. Bulletin, 10, 2003 (in Ukrainian)
9. Inventor’s certificate no. 1143 (USSR). Prokopenko, G.I. and Krivko, V.P.: Ultrasonic Multi-Head Tool. Bulletin, 13 (1978) (in Russian)
10. Patent of Ukraine no. 8366. Krasovskii, T.A., Prokopenko, G.I., and Tverdohleb, A.F.: An Apparatus for Ultrasonic Treatment. Bulletin, 1 (1996) (in Russian)
11. Patent of Ukraine no. 13936. Prokopenko, G.I. and Kozlov, A.V.: Ultrasonic Head for Surface Hardening of Metal Surfaces. Bulletin, 2 (1997) (in Russian)
12. Patent of Ukraine no. 47536. Prokopenko, G.I., Kleiman, Ya.I., Kozlov, O.V., Mikheev, P.P., Knysh, V.V., and Kudryavtsev, Yu.P.: Apparatus for Ultrasonic Impact Treatment of Metals. Bulletin, 7 (2002) (in Ukrainian)
13. Patent of USA no. 6467321. Prokopenko, G., Kleiman, J., Kozlov O., Micheev P., Knysh V., and Kudryavtsev Yu.: Device for Ultrasonic Peening of Metals. Publ. (2002)
14. Polotskii, I.G., Nedoseka, A.Ya., Prokopenko, G.I., et. al Reduction of Residual Welding Stresses by Ultrasonic Treatment. Automatic Welding, 5, 74-75 (1974) (in Russian)
15. Polotskii, I.G., Prokopenko, G.I., and Krivko, V.P. Ultrasonic Treatment of Some Industrial Alloys and Their Structural Changes. MiTOM, 6, 46-48 (1983) (in Russian)
16. Volosevych, P.Yu., Prokopenko, G.I., Knysh, V.V., and Voitenko, O.V. Structural Changes in the Weld Zone for Steel St3 under Ultrasonic Impact Treatment and Their Effect on Improving the Fatigue Resistance. Metal Physics and the Cutting-Edge Techniques, 30, 10, 1429-1443 (2008) (in Russian)
17. Knysh, V.V., Kuzmenko, A.Z., and Voytenko, O.V. Raise of Fatigue Resistance of Welded Joints by High-Frequency Mechanical Forging. Automatic Welding, 1, 43-47 (2006) (in Russian)
18. Garf, E.F., Litvinenko, A.E., and Smirnov, A.H. Estimation of Durability of Tubular Assemblies Subject to Ultrasonic Impact Treatment. Automatic Welding, 2, 13-16 (2001) (in Russian)
19. Knysh, V.V., Kuzmenko, A.Z., and Solovei, S.A. Raise of Cyclic Durability of Welded T-Joints with Surface Cracks. Automatic Welding, 1, 38-43 (2009) (in Russian)
20. Statnikov, E Sh. Applications of Operational Ultrasonic Impact Treatment Technologies in Production of Welded Joints. Welding in the World, 44, 3, pp. 34—45 (2000)
21. Golovnin, V.A. and Rivkin, V.I. Piezoelectric Ceramics (Application and Production). Foreign Electronics, 3, 47—58 (1989) (in Russian)
22. Grinchenko, V.T., Vovk, I.V., and Matsipura, V.T. (2007) Fundamentals of Acoustics. Kyiv: Naukova Dumka (in Ukrainian)
23. Merkulov, L.G. and Kharitonov, A.V. Theory and Calculation of Composite Concentrators. Acoustical Physics, 5, 43, 183-190 (1969) (in Russian)
24. https://www.youtube.com/watch?v=oWKzDQ8HTAs. Prikhodko, V.I., Vysokolyan, M.V., Volochay, V.V., Prokopenko, G.I., Mordyuk, B.N., Cherepin, V.T., Krasovskiy, T.A., and Popova, T.V.