FRACTURE MECHANICS, FRACTURE CRITERIA. AND FRACTURE CONTROL FOR WELDED STEEL SHIP HULLS
This paper describes a comprehensive toughness criteria for welded ship hulls that can be used for shipbuilding steels of all strength levels. Because of the fact that stress concentrations are always present in large complex welded structures such as ships, high local stresses as well as discontinuities or flaws will be present in welded ship hulls. Therefore, primary emphasis in the proposed fracture-control guidelines is placed on the use of steels with moderate levels of notch-toughness and on the use of properly designed crack arresters. However, the importance of proper design and fabrication should be emphasized. In general, the results of this investigation have developed conservative material-toughness requirements for skip steels of all strength levels which, in combination with properly designed crack arresters, should result in rational fracture-control guidelines that will minimize the probability of brittle fractures in welded ship hulls consistent with economic realities.
- Presented at the Ship Structure Symposium, Washington, D.C., October 6-8, 1975.
Society of Naval Architects and Marine Engineers601 Pavonia Avenue
Jersey City, NJ United States 07306-2907
- Rolfe, S T
- Publication Date: 1975-10
- Features: References;
- Pagination: 21 p.
- TRT Terms: Cracking; Dynamic loads; Fracture mechanics; Notching (Cutting); Strength of materials; Stresses
- Uncontrolled Terms: Crack propagation; Stress intensity factors
- Old TRIS Terms: Notch toughness
- Subject Areas: Marine Transportation; Materials;
- Accession Number: 00127052
- Record Type: Publication
- Source Agency: Society of Naval Architects and Marine Engineers
- Report/Paper Numbers: Paper P
- Files: TRIS
- Created Date: Nov 5 1975 12:00AM