International Journal of Naval Architecture and Ocean Engineering

The Society of Naval Architects of Korea (대한조선학회)
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A study on the fatigue strength characteristics of ship structural steel with gusset welds

  • Park, Sung-Jo (Mechanical Engineering, Pusan National University) ;
  • Lee, Hyun-Woo (Mechanical Engineering, Pusan National University)
  • Published : 2012.06.30
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Abstract

This study aims to assess fatigue property by the static overload and average load in the fillet welded joints which is on the ship structural steel having gusset welds. To this end, a small specimen was made, to which the same welding condition for the actual ship structure was applied, to perform fatigue tests. In this study, a method to simply assess changes in welding residual stress according to different static overload was suggested. By measuring actual strain at the weld toe, the weld stress concentration factor and property which is determined by recrystallization in the process of welding were estimated to investigate the relation between overload and fatigue strength.

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References

  1. AWS., 1987. Welding Handbook, Volume 1. 8th ed. pp.231-233.
  2. Bannantine, J.A., Comer, J.J. and Handrock, J.L., 1990. Fundamentals of Metal Fatigue Analysis. Prentice-Hall, Inc.
  3. Gurney, T.R., 1979. Fatigue of Welded Structure. 2nd ed. Cambridge University Press.
  4. Kim, H., 1992. A study on the fatigue crack opening behavior of the material with welding residual stress field. PhD. Korea University.
  5. Kim, W.S., 1997. Residual Stress & Fatigue strength in Welded Ship Structure. Journal of KWS, June , 15(3).
  6. Kim, Y.S., 1989. The Welding Residual Stress and Occurrence of Welding Deformation Mechanism and its Countermeasures. Journal of KWS, Mar, 7(1).
  7. Lee, Y.B. and Cho, N.I., 1995. Redistribution of Welding Residual Stress and its Effects on Fatigue Crack Propagation. Journal of KWS, Dec, 13(4).
  8. Maddox, S.J., 1991. Fatigue Strength of Welded Structures. 2nd ed. Abington Publishing.
  9. Park, J.S., Han, M.S. and Han, J.M., 1997. Mechanical Stress Relief Technology and its Application. Journal of KWS, 15(3).

Cited by

  1. Simulation-based fatigue life assessment of a mercantile vessel vol.50, pp.6, 2014, https://doi.org/10.12989/sem.2014.50.6.835