All specimens were tested under a range of stress from a maximum compressive stress to a tensile stress 50 percent as great. Endurance limits at 10 million cycles were indicated as follows: As-cast surface 38,000 psi; ground surface 42,000 psi; shot peened surface 48,000 psi. Corrosion fatigue tests using a 5-percent solution of sulfuric acid were made on unprotected specimens with as-cast, ground, and shot peened surfaces, and the S-N diagrams approached a vertical line at approximately one million cycles for all specimens. The protective paint coating applied to three groups of specimens proved to be beneficial, although not totally effective in increasing their fatigue life under 5-percent acid corrosion. A few hardness tests on unstressed specimens indicated little difference in hardness for as-cast and ground surfaces and a much greater hardness for shot peened specimens.

  • Corporate Authors:

    American Railway Engineering Association

    59 East Van Buren Street
    Chicago, IL  United States  60605
  • Authors:
    • Jensen, R S
  • Publication Date: 1949-2

Media Info

  • Features: Figures; Photos; Tables;
  • Pagination: p. 579-588
  • Serial:
    • Volume: 50
    • Issue Number: 479
    • Publisher: American Railway Engineering Association

Subject/Index Terms

Filing Info

  • Accession Number: 00040809
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 8 1994 12:00AM