FATIGUE FROM NOTCHES IN CAST STEELS

A range of plain carbon, carbon and manganese, and low-alloy cast steels have been tested in fatigue in bending with notches of radii from 0.125 to 25.4 mm. The number of cycles to produce a detectable fatigue crack correlated well with the range of stress-intensity factor divided by the square root of the notch-root radius, providing an adequate engineering method for design. Fatigue-crack propagation rates were also measured. Fatigue-crack propagation is anomalously high for fatigue cracks of 1.0 mm or less emanating from notches. This is thought to arise because of rapid fatigue propagation through the region of the Neuber particle.

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  • Corporate Authors:

    Metals Society

    1 Carlton House Terrace
    London SW1Y 5DB,   England 
  • Authors:
    • Barnby, J T
    • Holder, R
  • Publication Date: 1977-1

Media Info

  • Features: References;
  • Pagination: p. 5-10
  • Serial:
    • Metal Science
    • Volume: 11
    • Issue Number: 1
    • Publisher: Metals Society
    • ISSN: 4E

Subject/Index Terms

Filing Info

  • Accession Number: 00157582
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Aug 4 1977 12:00AM