CRACK PROPAGATION AND ARREST IN SHIP AND OTHER STEELS

The program was undertaken to explore the possibility of measuring and analyzing crack propagation and arrest. These processes depend on a number of factors (1) the mechanics of the flawed structure (or test specimen), (2) the plastically deformed zone at the crack tip, (3) the metal's resistance to plastic flow and its rate dependence, and (4) the processes of cleavage and ductile rupture on the microstructural scale. The work sought numerical descriptions of the individual factors with the aim of assembling these into a comprehensive systems-type analysis of propagation and arrest. The studies employed the DCB (double-cantilever-beam) test specimen because this configuration offers the possibility of initiating, propagating, and arresting a fast fracture, under controlled conditions, within the confines of a single specimen. Analyses of the stress fields of stationary cracks in DCB specimens are reported. (Author)

• Corporate Authors:

  Battelle Memorial Institute

  505 King Avenue
  Columbus, OH  United States  43201
• Authors:
  • Hahn, G T
  • Hoagland, R G
  • Mincer, P V
  • Rosenfield, A R
  • Sarrate, M
• Publication Date: 1971-8

Media Info

• Pagination: 63 p.

Subject/Index Terms

• TRT Terms: Cracking; Fracture mechanics; Plastic deformation; Ship structural components
• Identifier Terms: Ship Structure Committee
• Uncontrolled Terms: Crack propagation
• Old TRIS Terms: Crack arrest
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00025621
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SSC-219 Final Rpt
• Contract Numbers: N00024-68-C-5073
• Files: TRIS
• Created Date: Feb 11 1972 12:00AM