THE INITIATION OF FATIGUE CRACKS FROM NOTCHES IN MILD STEEL PLATES

Pulsating tension fatigue tests have been carried out on edge-notched specimens of a mild steel and measurements of electrical potential drop across notches have been used to determine the number of cycles to initiate cracks. The results can be described by using the range of stress intensity factor for the sharp crack situation modified to take into account the notch root radius. The models of plastic relaxation at a crack tip and analyses of elastic stress distribution at cracks and notches are used to discuss the results. Limited evidence in the literature indicates that the stress intensity approach may provide a general description of crack initiation and propagation in notched specimens.

• Corporate Authors:

  Wolters-Noordhoff N.V.

  Oude Boteringe Strasse 22
  8001 Groninger,   Netherlands 
• Authors:
  • Jack, A R
  • Price, A T
• Publication Date: 1970-12

Media Info

• Features: References;
• Pagination: p. 401-409
• Serial:
  • International Journal of Fracture Mechanics
  • Volume: 6 N
  • Issue Number: 4
  • Publisher: Wolters-Noordhoff N.V.

Subject/Index Terms

• TRT Terms: Cracking; Fatigue cracking; Fracture mechanics; Notch tests; Stresses
• Uncontrolled Terms: Stress intensity factors
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00028605
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Apr 10 1973 12:00AM