The Paton Welding Journal, 2003, №10

2003 №10 (23)

2003 №10 (25)

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The Paton Welding Journal, 2003, #10-11, 158-163 pages

Problems of welding and fatigue life of welded structures in shipbuilding

V.D. Gorbach, O.G. Sokolov, V.S. Mikhajlov

Central R&D Institute of Shipbuilding Technology, St.-Petersburg, Russia

Abstract
Factors are considered, which determine the cyclic strength and fatigue life of shipbuilding welded structures. Design evaluations of welding deformations are given for the case of the hull of a tanker and catamaran ship. Methods to lower the local and total deformations, stabilization of the shape and accuracy of welded structures through their low-frequency vibration treatment are outlined. Examples are given of using fundamentally new types of welded joints, based on high-energy density sources and adaptive welding processes.
Keywords: welding deformation, stress concentration, cyclic strength, laser technologies, adaptive welding processes, geometrical and process adaptation, honeycomb panels

References

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6. Mikhajlov, V.S., Gorbach, V.D., Stegantsev, V.P. et al. (1999) Low-frequency vibrotreatment of structures and surface strengthening of welded joints as effective processes of decreasing and redistribution of residual stresses. Vestik Tekhnologii Sudostroeniya, 5, 38–43.
7. Sokolov, O.G., Margolin, G.Z., Levshakov, V.N. et al. (2002) Prospects of application of new architectural-engineering solutions for ship hulls manufactured, using high power density sources. In: Proc. of Int. Conf. on Welding and Related Technologies, St.-Petersburg, 2001. St.-Petersburg: SPb GRU.
8. Gorbach, V.D., Suzdalev, I.V., Panikarovsky, R.F. et al. (2002) Adaptive control of the welding process as the method to ensure high quality and reliability of critical welded structures. Ibid.

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Suggested Citation

V.D. Gorbach, O.G. Sokolov, V.S. Mikhajlov (2003) Problems of welding and fatigue life of welded structures in shipbuilding. The Paton Welding J., 10, 158-163.

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