IS THERE A NEED FOR POSTCUTTING TREATMENTS (FOR STEEL) IN SHIPBUILDING

The paper reviews research work on the effect of postcutting treatments on flame-cut edges with special attention to fatigue strength and behaviour at sub-zero temperatures. Although modern cutting machines are capable of producing very smooth edges with great accuracy at high speed, some concern has been expressed that the fast cooling rates and consequent hardening may enhance the risk of brittle fracture. It is the Author's opinion, based on data collected at the Delft Ship Structures Laboratory, that, since brittle fractures rarely originate at a flame-cut edge, there is little advantage to be gained from surface repairs by welding. Failures are more likely to occur as a result of structural defects such as undercuts which are best removed by local grinding or milling.

• Supplemental Notes:
  • International Conference on Structural Design and Fabrication in Shipbuilding, London, November 18-20, 1975.
• Corporate Authors:

  Welding Institute

  Abingdon Hall
  Cambridge CB1 6AL,   England 
• Authors:
  • Nibbering, JJW
• Publication Date: 1975-11

Media Info

• Features: References;
• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Flame cutting; Fracture mechanics; Metal cutting
• Old TRIS Terms: Plate cutting
• Subject Areas: Construction; Marine Transportation;

Filing Info

• Accession Number: 00148502
• Record Type: Publication
• Source Agency: British Ship Research Association
• Report/Paper Numbers: Paper 5
• Files: TRIS
• Created Date: Feb 23 1977 12:00AM