EFFECT OF MECHANICAL STRESS RELIEVING ON LOW LOAD FRACTURE IN WELDED WIDE PLATE

A general theory was proposed to explain the mechanism of brittle fracture in welded and notched wide plate, based on the concept of flow and fracture stress curves. The analysis was made on a series of low load fracturing in welded and notched specimens. In the analysis, the history of plastic stress and strain at the notch tip in welded specimens was predicted from the test result on round bars with a reasonably assumed value of plastic strain concentration factor for the notch, also by taking into account of the shape of the stress-strain cycle curve and introducing the concept of Orowan's plastic constraint factor for a sharp notch. The result of the investigation showed that the proposed theory succeeded in clarifying the mechanism of brittle fracture including recovery in fracturing load due to mechanical stress relieving.

• Corporate Authors:

  Society of Naval Architects of Japan

  23 Shiba-kotohiracho, Minato-ku
  Tokyo 135,   Japan 
• Authors:
  • Terazawa, K
  • Otani, M
  • Ueda, Y
• Publication Date: 1969

Media Info

• Features: References;
• Pagination: p. 83-90
• Serial:
  • Selected Papers, J of Soc of Naval Arch of Japan
  • Volume: 2
  • Publisher: Society of Naval Architects of Japan

Subject/Index Terms

• TRT Terms: Fracture mechanics; Stresses; Structural analysis; Welds
• Old TRIS Terms: Weld stresses
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00035163
• Record Type: Publication
• Source Agency: Society of Naval Architects of Japan
• Files: TRIS
• Created Date: Oct 27 1972 12:00AM