FRACTURE MECHANICS IN THE DESIGN OF LARGE SPHERICAL TANKS FOR SHIP TRANSPORT OF LNG

It is the object of this paper to describe the consequences of the "leak-before-failure" criterion in the construction of LNG tanks with respect to material and design requirements. The investigation is related to the development of the LNG carriers of Moss-Rosenberg design for different cargo capacities up to 125,000 cu m. Fracture mechanics testing and analysis, as well as detailed stress analysis have been involved. The experimental investigation of both 9 percent Ni-steel and aluminum alloy 5083-0, regarding fatigue crack configuration, propagation rate and critical crack sizes, has demonstrated that the requirements imposed by the "leak-before-failure" criterion are contained. A close agreement between the fracture mechanics analysis and the test results have been obtained.

• Corporate Authors:

  Royal Norwegian Council for Scientific & Indus Res

  Radhusgaten 8, Sentrum
  Oslo,   Norway 
• Authors:
  • Tenge, P
  • Solli, O
• Publication Date: 1973

Media Info

• Features: References;
• Pagination: p. 1-18
• Serial:
  • Norwegian Maritime Research
  • Volume: 1
  • Issue Number: 2
  • Publisher: Royal Norwegian Council for Scientific & Indus Res

Subject/Index Terms

• TRT Terms: Container tanks; Design; Liquefied gases; Liquefied natural gas; Shells (Structural forms); Tankers
• Old TRIS Terms: Lng tank design; Spherical shells
• Subject Areas: Design; Marine Transportation; Materials;

Filing Info

• Accession Number: 00048128
• Record Type: Publication
• Source Agency: Royal Norwegian Council for Scientific & Indus Res
• Files: TRIS
• Created Date: Nov 14 1973 12:00AM