DYNAMIC TOUGHNESS DETERMINATION IN DUCTILE MATERIALS

A test technique involving dynamic fracture of specimens, precracked by various amounts, allows estimates to be made of ductile fracture propagation energy. This technique eliminates extraneous energy losses which are the cause of specimen size dependence when conventional measurements of fracture energy are made. There is no simple relationship between fracture propagation energy and the total energy from conventional fracture tests. Although Charpy energy values up to about 70J reflect the fracture propagation resistance, increases in Charpy value above this level do not appear to be accompanied by significant improvements in ductile fracture propagation resistance. There is no simple relationship between ductile fracture propagation resistance and material thickness.

• Supplemental Notes:
  • Dynamic Frac Toughness, Intl Conf, v1, London, England, 5-7 July 1976.
• Corporate Authors:

  Welding Institute

  Abingdon Hall
  Cambridge CB1 6AL,   England 
• Authors:
  • Fearnehough, G D
  • Dickson, D T
  • Jones, D G
• Conference:
  • Dynamic Frac Toughness, Intl Conf, v1, London, England, 5-7 July 1976.
• Publication Date: 1977

Media Info

• Features: References;
• Pagination: p. 315-325

Subject/Index Terms

• TRT Terms: Cracking; Fracture mechanics; Materials tests; Pipelines; Steel; Steel pipe; Testing
• Uncontrolled Terms: Fracture
• Old TRIS Terms: Charpy tests; Line pipe steel; Steel testing
• Subject Areas: Marine Transportation; Materials; Pipelines; Terminals and Facilities;

Filing Info

• Accession Number: 00165408
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Paper 29 Conf Proc
• Files: TRIS
• Created Date: Nov 23 1977 12:00AM