A TECHNIQUE FOR MONITORING CRACK EXTENSION DURING CRACK OPENING DISPLACEMENT MEASUREMENT

A D.C. electrical resistance crack monitoring technique has been developed to enable the detection of the crack extension processes which occur during the measurement of crack opening displacement in steels. The approach is able to distinguish between stretch zone formation, which occurs early in the loading process, and fibrous extension which follows it. Results are presented for two low-strength carbon-manganese steels in which the crack extension which accompanies COD measurement over a range of temperatures has been monitored by the electrical resistance technique and confirmed by subsequent fractographic examination.

• Corporate Authors:

  British Iron and Steel Corporation

  Metallurgy Department
  London,   England 
• Authors:
  • McIntyre, P
  • ELLIOTT, D
• Publication Date: 1972-8

Media Info

• Pagination: 20 p.

Subject/Index Terms

• TRT Terms: Cracking; Fracture mechanics; Measurement; Plastic deformation
• Uncontrolled Terms: Crack propagation
• Old TRIS Terms: Crack opening measurement
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00041728
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: BISRA-MG/15/72 Open Rpt
• Files: TRIS
• Created Date: Mar 19 1973 12:00AM