The ultrasonic impact treatment (UIT) is one of the new and promising processes for residual stress relief and fatigue life improvement of welded elements and structures. In most industrial applications this process is also known as ultrasonic peening (UP). The beneficial effect of UP is achieved mainly by relieving of harmful tensile residual stresses and introducing of compressive residual stresses into surface layers of materials, decreasing of stress concentration in weld toe zones and enhancement of mechanical properties of the surface layers of the material. The fatigue testing of welded specimens convincingly confirmed that UP is the most efficient improvement treatment when compared with such traditional techniques as grinding, TIG-dressing, heat treatment, hammer peening, shot peening and application of LTT electrodes. This paper presents an overview of results of a few studies conducted to evaluate the efficiency of Ultrasonic Peening in maintenance and repair of samples comprising bridge welded structural details as well as discussing examples of use of the UP technology on actual bridges. The results of the fatigue testing showed that UP provides significant fatigue improvement of welded elements, with the fatigue life of welded samples increasing after application of UP 4-5 times depending on the level of applied stresses.
Kudryavtsev Y, Korshun V, and Kuzmenko A. Improvement of Fatigue Life of Welded Joints by Ultrasonic Impact Treatment, Paton Welding Journal, 1989, No. 7. pp. 24-28.
Kudryavtsev Y, Mikheev P, and Korshun V. Influence of Plastic Deformation and Residual Stresses Created by Ultrasonic Impact Treatment on Fatigue Strength of Welded Joints, Paton Welding Journal, 1995, No. 12. pp. 3-7
Kudryavtsev Y and Kleiman J. Increasing Fatigue Strength of Welded Elements and Structures by Ultrasonic Impact Treatment. International Institute of Welding. IIW Document XIII-2318-10. 2010.
Trufyakov V, Mikheev P. and Kudryavtsev Y. Fatigue Strength of Welded Structures. Residual Stresses and Improvement Treatments, Harwood Academic Publishers GmbH. London, 1995a, 100 p.
Trufiakov V, Mikheev P, Kudryavtsev Y and Statnikov E. Ultrasonic Impact Treatment of Welded Joints, International Institute of Welding, IIW Document XIII-1609-95. 1995b.
Statnikov E, Trufiakov V, Mikheev P and Kudryavtsev Y. Specifications for Weld Toe Improvement by Ultrasonic Impact Treatment. International Institute of Welding, IIW Document XIII-1617-96. 1996.
Kleiman J, Kudryavtsev Y, Lugovskoy A. Benefits of Ultrasonic Peening Treatment in Fatigue Improvement of Welded Elements, Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering, OMAE2012, July 1-6, 2012, Rio de Janeiro, Brazil, Paper #83175
Kudryavtsev Y, Kleiman J, Lobanov L, et al. Fatigue Life Improvement of Welded Elements by Ultrasonic Peening, International Institute of Welding. IIW Document XIII-2010- 04. 2004. 20 p.
Kudryavtsev Y and Kleiman J. Application of Ultrasonic Peening for Fatigue Life Improvement of Automotive Welded Wheels, International Institute of Welding, IIW Document XIII-2075-05, 2005b, 9 p.
Kudryavtsev Y, Kleiman J, Lugovskoy A and Prokopenko G. Fatigue Life Improvement of Tubular Welded Joints by Ultrasonic Peening, International Institute of Welding. IIW Document XIII-2117-06, 2006. 24 p.
Kudryavtsev Y and Kleiman J. Fatigue of Welded Elements: Residual Stresses and Improvement Treatments, Proceedings of the IIW International Conference on Welding & Materials, July 1-8, 2007, Dubrovnik, Croatia, P. 255-264.
Haagensen P. Progress Report on IIW WG2 Round Robin Fatigue Testing Program on 700 MPa and 350 MPa YS Steels, International Institute of Welding. IIW Document XIII-2081- 05, 2005.
Marquis G and Björk T. Variable Amplitude Fatigue Strength of Improved HSS Welds, International Institute of Welding, IIW Document XIII-2224-08, 2008.
Marquis G and Barsoum Z. Fatigue Strength Improvement of Steel Structures by HFMI: Proposed Procedures and Quality Assurance Guidelines, International Institute of Welding IIW Document XIII-2453-13, 2013a.
Kudryavtsev Y. Residual Stress, Springer Handbook on Experimental Solid Mechanics, Springer – SEM, 2008, P. 371-387.
Marquis, G. B., Mikkola, E., Yildirim, H.C. Barsoum, Z., Fatigue Strength Improvement of Steel Structures by HFMI: Proposed Fatigue Assessment Guidelines, International Institute of Welding, Paris, IIW Document XIII-2452-13, 2013b.
Kudryavtsev, Y., Kleiman, J. and Knysh, V., Fatigue Strength of Structural Elements with Cracks Repaired by Welding. International Institute of Welding. Document XIII-2236-08. 2008. 7
Kudryavtsev, Y. and Kleiman, J., Increasing Fatigue Strength of Welded Joints by Ultrasonic Impact Treatment, IIW Document XIII- 2338-10
Hakimi P. S. and Al-Emrani, M., Post weld treatment Implementation on bridges with special focus on HFMI, Report 2014:8 Department of Civil and Environmental Engineering Division of Structural Engineering Steel and Timber Structures Chalmers University of Technology SE-412 96 Göteborg Sweden, 2014.
Patent of USA # 2,356,314, 1944, Scaling Tool, Reo D. Grey and James R. Denison.
Patent of USA # 3,349,461,. 1967, Descaling Tool, Joseph. Niedzwiecki.
Blaha F, Langenecker B. Tensile deformation of zinc crystal under ultrasonic vibration. Naturwissenschaften 1955;42:5560.
Langenecker B. Effects of Ultrasound on Deformation Characteristics of Metals, IEEE Transactions on Sonics and Ultrasonics, Vol. SU-13, No. 1, March 1966, pp. 1-8.
Castillo-Morales, M, and Salas-Zamarripa, A., The effects of UIT in the fatigue life of Al 2024-T3, Key Engineering Materials Online: 2010-09-06, ISSN: 1662-9795, Vol. 449, pp 15-22
D. M. Goudar, D.M., Turski, M., et al., Measurement of Residual Stresses in Surface Treated Stainless Steel Groove Welds, Materials Science Forum 681:49-54, March 2011, DOI: 10.4028/www.scientific.net/MSF.681.49
Kudryavtsev Y, Kleiman J, Lugovskoy A, et al. Rehabilitation and Repair of Welded Elements and Structures by Ultrasonic Peening, International Institute of Welding, IIW Document XIII-2076-05. 2005a, 13 p
Łabanowski, J., Fydrych, D., Rogalski, G., Underwater Welding – A Review, Advances in Materials Science, Vol. 8, No. 3(17), December 2008, pp.11-22.
Szelagowski, P., Ibarra, S., Ohliger, A., and dos Santos, J-F., In-Situ Post-Weld Heat Treatment of Wet Welds, Offshore Technology Conference, 6907-MS, 4 May-7 May 1992, Houston, Texas
Wernicke, R. and Pohl, R., Underwater Wet Repair Welding and Strength Testing on Pipe-Patch Joints, J. Offshore Mech. Arct. Eng 120(4), (Nov 01, 1998), pp. 237-242.
Y. Kudryavtsev, J. Kleiman and A. Lugovskoy, Underwater Ultrasonic Peening of Welded Elements and Structures, Integrity, Reliability & Failure 2013, Funchal, Portugal, June 24-26, 2013
J. Kleiman and Y. Kudryavtsev, Should Welders Care about Residual Stresses, CWA Journal, 16, 2016, pp. 24-33
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