Since 1960 and with increases in the size of ships there has been a large number of instances of cracks and buckling around the slots designed to allow longitudinals to fit into the webs of transverse hull members. Much research on this fatigue problem by various organisations in Japan has resulted in a sharp decrease in this type of damage in recent years; the research has also been of benefit to hull structural analysis in general and to the analysis of structures other than ships. The Authors, of Tokyo University and Mitsubishi H.I. respectively, present a detailed review of this Japanese research under the main headings: (a) Damage in Ships. (b) Stress Calculation. 1) Method used by the Slot Working Group (of the West Japan Society of Naval Architects). 2) Mitsui's method. 3) Estimation of maximum value of stress. (c) Fatigue Crack Initiation Life. 1) Fatigue tests with scale models and cross joints. 2) Fatigue tests with large-scale models. 3) Effect of misaligned web stiffeners on fatigue strength. 4) Corrosive effect of sea water. (d) Fatigue Crack Propagation Life. 1) Method of calculating propagation life. 2) Analysis of model test results. 3) Corrosive effect of sea water. (e) Fatigue of Slotted Part due to Slamming. (f) Fatigue Design. Order from BSRA as No. 49,397.

  • Availability:
  • Corporate Authors:

    International Institute of Welding

  • Authors:
    • Iida, K
    • Matoba, M
  • Publication Date: 1978


  • French

Media Info

  • Features: References;
  • Pagination: p. 194
  • Serial:
    • Welding in the World
    • Volume: 16
    • Issue Number: 5/6
    • Publisher: International Institute of Welding
    • ISSN: IX788-72/X-659-72

Subject/Index Terms

Filing Info

  • Accession Number: 00188727
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Mar 14 1979 12:00AM