STANDARDISATION OF WAGONS. THE INFLUENCE OF THE STRAIN RATE ON THE YIELD POINT OF STEEL--EFFECT OF REPEATED IMPACTS ON THE YIELD POINT OF THE STEEL

This report describes the execution and analysis of the following tests: Tensile tests with different impact loading rates on test pieces made of St 38-3 and H 52-3 Steels; and Fatigue tests on test pieces made of H 52-3 steel, previously exposed to a given number of impact loads corresponding to a given strain rate. It contains, among other things, findings relating to nature and severity of the experimentally demonstrated influence of the strain rate on the yield point of the above-mentioned materials, which are used in the construction of wagons. The analysed strain rate interval includes the deformation rates occurring during 15 km/h buffing impacts with loaded 4-axled wagons.

• Supplemental Notes:
  • Restrictions on the use of this document are contained in the explanatory material.
• Corporate Authors:

  International Union of Railways

  Office of Research and Experiments
  Utrecht,   Netherlands 
• Publication Date: 1979-10

Media Info

• Features: Figures; Tables;
• Pagination: 31 p.

Subject/Index Terms

• TRT Terms: Crash tests; Fatigue strength; Fatigue tests; Freight cars; Impact loads; Materials science; Metallurgy; Standardization; Steel; Strain measurement; Structural analysis; Tension
• Uncontrolled Terms: Tensile stress
• Old TRIS Terms: Impact loading; Question b12; Steel metallurgy
• Subject Areas: Railroads; Research;

Filing Info

• Accession Number: 00053372
• Record Type: Publication
• Report/Paper Numbers: B 12/RP 29
• Files: TRIS
• Created Date: Feb 6 1981 12:00AM