The development of a high pressure torsion test methodology for simulating wheel/rail contacts

Simulating the wheel/rail contact of a train is traditionally conducted using small-scale twin-disc testing. Here an emerging alternative method, “high pressure torsion” (HPT) test introduced. This has advantages over testing as only one cycle used and it easier to control third body layers during Shear stress data generated useful on its own, but can also be parameterise analytical prediction tools such extended creep force model (ECF), which produces creep-force curves from HPT data. then validated against field develop full-scale predictive capability. A detailed account methodology development procedures for running typical are presented along with case studies that illustrate output