EVALUATION OF THE FATIGUE STRENGTH OF INTEGRATED TANKS FOR LNG SHIPS

The trend in design of ships for transporting liquefied natural gas is towards the replacement of self-supporting tanks by integrated tanks. The latter are thin-metallic membrane tanks supported by load-bearing insulation fitted to the inside of the hull. This paper describes one design of integrated tank, discusses the loads imposed on it and shows how the result of cyclic pressure fatigue tests on pilot scale tanks have been analyzed statistically using the likelihood function. The paper also shows how the fatigue data can be combined with the sea load spectrum to predict whether ship tanks will have an acceptable fatigue strength.

• Supplemental Notes:
  • Paper from proceedings of the International Conference on Liquefied Natural Gas, London, March 25-28, 1969.
• Corporate Authors:

  Institution of Mechanical Engineers

  1 Birdcage Walk
  London SW1H 9JJ,   England 
• Authors:
  • Burns, D J
  • JACKSON, R G
  • Kalbfleisch, J G
• Conference:
  • Paper from proceedings of the International Conference on Liquefied Natural Gas, London, March 25-28, 1969.
• Publication Date: 1969-3

Media Info

• Features: References;
• Pagination: p. 469-486

Subject/Index Terms

• TRT Terms: Container tanks; Design; Fatigue strength; Liquefied natural gas; Repeated loads
• Old TRIS Terms: Cyclic fatigue; Lng tank design; Tank construction
• Subject Areas: Design; Marine Transportation; Materials;

Filing Info

• Accession Number: 00034482
• Record Type: Publication
• Source Agency: Institution of Mechanical Engineers
• Files: TRIS
• Created Date: Sep 27 1972 12:00AM