Fatigue of Welded Joints

Welding of metals is applied on a very wide scale, especially for building up structures by welding of steel plates and girders of different cross sections (I-beams, U-beams, angle beams). Welding provides many structural design options which cannot be simply realized with other production techniques. Major applications are found in bridges, cranes, ships, offshore structures, pressure vessels, buildings and various types of spatial frames.

Welding as a production technique is associated with various problems, which are characteristic for welding only. As a result, the subject “welding” became practically a discipline on its own as illustrated by the existence of welding institutes and organizations, standards and design codes, journals, and an extensive literature. Within the welding discipline, much attention has been paid to problems related to different welding techniques known under general names as: arc welding, gas welding, electron beam welding, laser welding, resistance spot welding, friction welding, and more recently stir friction welding. Welded joint designs and notch effects of welds are typical for welded structures. Welded joints are also known for a number of characteristic weld defects. These defects have created new issues for non-destructive inspections (NDI), which have stimulated developments of X-ray and ultrasonic equipment. Moreover, fatigue properties of welded joints can exhibit considerable scatter because of a variety of imperfections of these joints. As a consequence, fatigue of welded joints has always been a matter of concern, but good welding practice can be specified for fatigue critical structures including non-destructive inspections of all welds.s

Keywords

Fatigue Porosity Welding Tungsten Explosive 

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References

  1. 1.
    Gurney, T.R., Fatigue of Welded Structures, 2nd edn. Cambridge University Press, Cambridge, UK (1979).Google Scholar
  2. 2.
    Maddox, S.J., Fatigue Strength of Welded Structures, 2nd edn. Abington Publishing, Cambridge, UK (1991).Google Scholar
  3. 3.
    Radaj, D., Design and Analysis of Fatigue Resistant Welded Structures. Abington Publishing, Cambridge UK (1990).Google Scholar
  4. 4.
    Lancaster, J., Metallurgy of Welding, 6th edn. Abington Publishing (1999).Google Scholar
  5. 5.
    Skorupa, M., Fatigue life prediction of cruciform joints failing at the weld toe. Welding Research Supplement, Welding Journal, Aug. (1992), pp. 269S–275S.Google Scholar
  6. 6.
    Code of practice for fatigue design and assessment of steel structures. BS 7608: 1993. British Standards Institution, London (1993). See [3] for more information on other codes.Google Scholar
  7. 7.
    Noordhoek, C. and de Back, J. (Eds.), Steel in Marine Structures, Proc. 3rd Int. ESCS Offshore Conference on Steel in Marine Structures (SIMS '87). Elsevier, Amsterdam (1987).Google Scholar
  8. 8.
    Haibach, E., Fatigue Strength in Service. VDI-Verlag GmbH, Düsseldorf (1989) [in German].Google Scholar
  9. 9.
    Gurney, T.R., Cumulative damage of welded joints: II. Test results. Joining Mater., Vol. 2, (1989), pp. 390–395.Google Scholar
  10. 10.
    Overbeeke, J.L., The fatigue behaviour of heavy-duty spot welded lap joints under random loading conditions. Welding Res. Int., Vol. 7 (1977), pp. 254–275.Google Scholar
  11. 11.
    Overbeeke, J.L. and Draisma, J., Fatigue characteristic of heavy-duty spot-welded lap joints. Metal Constr. British Welding J., Vol. 6 (1974), pp. 213–219.Google Scholar
  12. 12.
    Rupp, A., Störzel, K. and Grubisic, V., Computer aided dimensioning of spot-welded automotive structures. SAE Paper 950711 (1995). Some general references (see also [1–4])Google Scholar
  13. 13.
    Sonsino, C.M., Course of SN-curves especially in the high-cycle fatigue regime with regard to component design and safety. Int. J. Fatigue, Vol. 29 (2007), pp. 2246–2258.CrossRefGoogle Scholar
  14. 14.
    Radaj, D., Sonsino, C.M. and Fricke, W. (Eds.), Fatigue Assessment of Welded Joints by Local Approaches. Woodhead Publishing (2006)Google Scholar
  15. 15.
    Samuelson, J. (Ed.), Design and Analysis of Welded High Strength Steel Structures. EMAS, UK (2002).Google Scholar
  16. 16.
    Savaidis, G. and Vormwald, M., Hot-spot stress evaluation of fatigue in welded structural connections supported by finite element analysis. Int. J. Fatigue, Vol. 22 (2000), pp. 85–91.CrossRefGoogle Scholar
  17. 17.
    Barsom, J.M. and Rolfe, S., Fracture and Fatigue Control in Structures. Applications of Fracture Mechanics, 3rd edn. Butterworth-Heinemann (1999).Google Scholar
  18. 18.
    Van der Sluys, W.A., Effects of the Environment on the Initiation of Crack Growth. ASTM STP 1298 (1997).Google Scholar
  19. 19.
    Radaj, D., Review of fatigue strength assessment of non-welded and welded structures based on local parameters. Int. J. Fatigue, Vol. 18 (1996), pp. 153–170.CrossRefGoogle Scholar
  20. 20.
    Lawrence, F.H., Dimitrakis, S.D. and Munse, W.H., Factors influencing weldment fatigue. Fatigue and Fracture, American Society for Materials, Handbook Vol. 19, ASM International (1996), pp. 274–286.Google Scholar
  21. 21.
    Tarsem, J., Fatigue and fracture control of weldments. Fatigue and Fracture, American Society for Materials, Handbook Vol. 19, ASM International (1996), pp. 434–449.Google Scholar
  22. 22.
    Dover, W.D., Dharmavasan, S., Brennan, F.P. and Marsh, K.J. (Eds.), Fatigue Crack Growth in Offshore Structures. EMAS, Solihull, UK (1995).Google Scholar
  23. 23.
    Monahan, C.C., Early Fatigue Crack Growth at Welds. Topics in Engineering, WIT Press (1995)Google Scholar
  24. 24.
    Scott, P. and Cottis, R.A. (Eds.), Environment Assisted Fatigue. EGF Publication 7, Mechanical Engineering Publications, London (1990) (four papers on welded steel joints in salt water).Google Scholar
  25. 25.
    McHenry, H.I. and Potter, J.M. (Eds.), Fatigue and Fracture Testing of Weldments. ASTM STP 1058 (1990).Google Scholar
  26. 26.
    Booth, G.S. (Ed.), Improving the Fatigue Strength of Welded Joints. The Welding Institute, Cambridge, UK (1983).Google Scholar
  27. 27.
    Residual Stresses and Their Effect. The Welding Institute, Cambridge UK (1981).Google Scholar
  28. 28.
    Hoeppner, D.W. (Ed.), Fatigue Testing of Weldments. ASTM STP 648 (1978).Google Scholar

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