STUDY OF THE C.O.D. CONCEPT FOR BRITTLE FRACTURE INITIATION

The crack opening displacement (COD) concept is developed as a criterion for the initiation of brittle fracture. The validity of this concept was checked by tensile, bend and Charpy type impact bend tests using mild steel plate. Critical COD values were directly measured by taking microphotographs. A description of the test equipment is given, and the results of the tests analyzed and discussed. It is concluded that the 'double notch' test is a useful method for measuring the critical COD, but the 'overall displacement' method, is at present unsatisfactory.

• Corporate Authors:

  Chapman and Hall Limited

  11 New Fetter Lane
  London,   England 
• Authors:
  • Kanazawa, T
  • Machida, S
  • Momota, S
  • HAGIWARA, Y
• Publication Date: 1969-4

Media Info

• Pagination: p. 1-14
• Serial:
  • Fracture 1969
  • Publisher: Chapman and Hall Limited

Subject/Index Terms

• TRT Terms: Cracking; Crash tests; Fracture mechanics; Measurement
• Old TRIS Terms: Crack opening measurement
• Subject Areas: Marine Transportation; Materials; Research;

Filing Info

• Accession Number: 00019250
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Nov 8 1974 12:00AM