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Investigation of Wheel and Rail Rolling Contact Fatigue by Using a Full-Scale Simulator
With support from FRA, Transportation Technology Center Inc. (TTCI) developed a full-scale rolling contact fatigue simulator (RCFS) to research the root causes of wheel and rail surface damage. This damage comprises surface pitting, cracking, wear, and material flow and is a function of both the...
Effect of Concrete Composition on Splitting Cracks in Prestressed Concrete Railroad Ties
Kansas State University researchers conducted fracture toughness (FT) tests on four, 3-point bending concrete specimens for each mixture type. Next, they fabricated pretensioned prisms with varying amounts of concrete covering the reinforcements. The prism strength was 4,500 psi when de-...
Electronically Controlled Pneumatic Brake Device with Pneumatic Brake Emulation – Field Demonstration
Electronically Controlled Pneumatic (ECP) brake technology can improve both safety and braking performance of trains. One of the technical barriers is the interchange requirement of a freight car. This barrier can be addressed either by an overlay ECP or an ECP emulator. Under a previous effort...