STUDY OF BRITTLE CRACK ARRESTER--CONSIDERATIONS ON THE ARREST OF A VERY LONG CRACK

In previous reports, a simple fracture mechanics concept has been successfully applied to the analysis of the experimental results of several kinds of brittle crack arrester using medium size specimens (500 mm wide). The length of arrested crack considered was limited to about 300 mm. This report discusses the propagation-arrest of a very long crack together with the effects of specimen geometry and loading condition to be accounted for in the brittle crack propagation-arrest test. The experimental results obtained from very wide specimens (1,000 to 2,400 mm wide) showed that a simple extrapolation of the concept which was valid for shorter cracks could not be applied to the arrest of a very long crack. As a practical solution to this problem, a consideration on the saturating characteristics of nominal K value of a propagating long crack has been made using a new concept of "effective K value", and some design aspects of brittle crack arresters are discussed on the basis of this consideration.

• Corporate Authors:

  Society of Naval Architects of Japan

  23 Shiba-kotohiracho, Minato-ku
  Tokyo 135,   Japan 
• Authors:
  • Kanazawa, T
  • Machida, S
  • Yajima, H
  • Aoki, M
• Publication Date: 1973-11

Media Info

• Features: References;
• Pagination: p. 135-147
• Serial:
  • Selected Papers, J of Soc of Naval Arch of Japan
  • Volume: 11
  • Publisher: Society of Naval Architects of Japan

Subject/Index Terms

• TRT Terms: Cracking; Fracture mechanics
• Uncontrolled Terms: Crack propagation
• Old TRIS Terms: Crack arrest
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00057587
• Record Type: Publication
• Source Agency: Society of Naval Architects of Japan
• Files: TRIS
• Created Date: Sep 19 1974 12:00AM