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Review of Tank Car Side Impact Test Research and Analyses of 2007-2019
The Federal Railroad Administration (FRA) has a long-standing research program to examine the puncture resistance of railroad tank cars used in the transportation of hazardous materials within the U.S. Since 2007. FRA conducted 11 tank car shell impact tests at the Transportation Technology...
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-...