NOTCH EFFECTS IN LOW CYCLE FATIGUE OF STEELS

Results of researches made for the purpose of investigating notch effects in low cycle fatigue of steels are summarized in this paper. In the first part, low cycle fatigue behavior of notched wide plates subjected to repeated tensile load are described, and the crack initiation life of a notched wide plate is discussed in correlation with crack initiation life of an hourglass shaped, small size specimen, which was strain cycled by duplicating strain histories at the tip of notch in the wide plate. The latter part deals with the results of completely reversed, strain and load cycling tests of mild and 80 kg/sq mm steels. One of the conclusions obtained is that the fatigue strength reduction factor defined in strain cycling of smooth and grooved specimens is approximately equal to the plastic strain concentration factor of the notch.

• Corporate Authors:

  Society of Naval Architects of Japan

  23 Shiba-kotohiracho, Minato-ku
  Tokyo 135,   Japan 
• Authors:
  • Iida, K
• Publication Date: 1973-11

Media Info

• Features: References;
• Pagination: p. 117-134
• 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; Fatigue (Mechanics); Fatigue strength; Notching (Cutting); Strength of materials
• Uncontrolled Terms: Crack propagation; Fatigue life
• Old TRIS Terms: Low cycle fatigue; Notch toughness
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00057586
• Record Type: Publication
• Source Agency: Society of Naval Architects of Japan
• Files: TRIS
• Created Date: Sep 19 1974 12:00AM