FATIGUE COMPARISON OF 7-IN. DIAMETER SOLID AND TUBULAR AXLES

The object of this experimental investigation was to determine the fatigue resistance of solid versus tubular type axles for railroad car service. Solid axles tested represented conditions consistent with existing railroad specifications. The tubular axles investigated were of two types; one of which was tested with permission of A.A.R. and the results reported by the manufacturer, the other was tested as a separate project in order to contribute information on certain questions pertaining to the fatigue strength of axles. Rotating cantilever beam fatigue tests were made on axles about 7 in. in diameter using steel of about S.A.E. 1045 analysis. Comparison of axle fatigue resistance due to a press-fitted wheel was made between "as-forged" solid members and seamless tubes in "hot-rolled" and several conditions of heat treatment. Results showed that tubular axles having high tensile strength values may or may not exhibit greater fatigue strength than those having lower physical properties. Observations on the effect of residual stresses are given. Some tubular axles showed greater fatigue strength than the solid ones.

• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Horger, O J
  • Buckwalter, T V
• Publication Date: 1941

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 12 p.
• Serial:
  • Volume: 41

Subject/Index Terms

• TRT Terms: Axles; Bending; Bending stress; Concrete hardening; Fatigue (Mechanics); Fatigue (Physiological condition); Hardness; Metal heating; Railroad cars; Residual stress; Size; Stresses; Technology; Vehicle design; Wheels; Wheelsets (Railroads)
• Uncontrolled Terms: Heat treatment; Quenching
• Geographic Terms: United States
• Old TRIS Terms: Axle design; Axle fatigue
• Subject Areas: Design; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00040783
• Record Type: Publication
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: Jul 8 1994 12:00AM