EVALUATION OF THE BRITTLE FRACTURE OF RAILS

SPRODBRUCHABSCHATZUNG AN SCHIENEN

The testing of rails provided for in the technical specifications of the railways (and particularly the UIC) gives incomplete information concerning the behaviour of rails subjected to certain frequent stresses in service, such as the effect of impacts caused by flats on the wheel treads. The author's purpose is to establish more satisfactory criteria for evaluation purposes, taking into account the triaxial character of the pressure in the rails by making use of the Schnadt diagram covering the index of the capacity of plastic deformation of the steel in relation to the pressures to which it is subjected. The above article contains an account of the work carried out by the author in order to establish characteristic parameters of the risk of brittle fractures of the rails in relation to a coefficient covering eventual cracks, or grooves, in the rail surface, as well as the temperature, the load, and the speed, and numerical formulae are provided covering the German State Railway's S 49 rails.

• Corporate Authors:

  VEB Autobahnbaukombinat

  Templinestrasse 19
  Potsdam,   Germany 
• Authors:
  • Tutzchky, G
• Publication Date: 1972

Language

• German

Media Info

• Features: Figures; References;
• Pagination: 4 p.
• Serial:
  • Deutsche Eisenbahntechnik
  • Issue Number: 9
  • Publisher: VEB Autobahnbaukombinat

Subject/Index Terms

• TRT Terms: Fracture mechanics; Rail (Railroads); Train track dynamics
• Old TRIS Terms: Rail fracture
• Subject Areas: Railroads;

Filing Info

• Accession Number: 00048277
• Record Type: Publication
• Source Agency: International Railway Documentation, Selection of
• Files: TRIS
• Created Date: Jan 11 1976 12:00AM