Testing of the fracture resistance of rails
Abstract
Various grades of rail steel as well as whole rail sections were subjected to fracture resistance tests according to the unified method. It was found that heat treatment of rails increased fracture resistance by 50 percent. However, residual stresses also had a substantial effect. Apparent durability values N(sub c) from the Wilson formula have been derived. The influence of residual stresses on rail durability is stated.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1994
- Bibcode:
- 1994STIN...9435353S
- Keywords:
-
- Durability;
- Fatigue Tests;
- Fracture Strength;
- Heat Treatment;
- Rails;
- Residual Stress;
- Steels;
- Crack Propagation;
- Cracking (Fracturing);
- Metal Fatigue;
- Structural Mechanics