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.

Media Info

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

Subject/Index Terms

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