General
Railroad Tank Car Relief Valve Requirements for Liquid PIH Lading
Analyses were performed for the Federal Railroad Administration (FRA) by Transportation Technology Center, Inc., a subsidiary of the Association of American Railroads, to determine if the changes made to Chapter 49 of the Code of Federal Regulations under docket HM-181 for the selection pressure...Locomotive Crashworthiness Impact Test No. 3: Test Procedures, Instrumentation, and Data
A full-scale impact test of a locomotive crashing into a highway trucking rig (tractor and trailer) loaded with two steel coils was conducted on a grade crossing at the FRA’s Transportation Technology Center (TTC) on December 18, 2002. This was the third of a series of locomotive crashworthiness...Locomotive Crashworthiness Impact Test No. 2: Test Procedures, Instrumentation, and Data
A full-scale locomotive impact test was performed September 10, 2002. The test involved a SD-45 locomotive, modified to meet AAR Specification S-580, and three trailing loaded hopper cars impacting a stationary log truck at a grade crossing at 50.4 mph. The locomotive broke through the logs and...Development of Advanced Methods for Theoretical Prediction of Shakedown Stress States and Physically Based Enhancement of Experimental Data: Volume III
A neural network approach to theoretical prediction of required residual stresses is considered here. Artificial neural networks trained well and long enough on residual stresses induced by various contact loads may provide very fast response. Results of numerical meshless finite difference...
Attentuation of Dynamic Response of Special Track Work Foundations Subjected to Impact Loading
This report deals with damage to special track work due to high impact loads and the beneficial effect of increasing damping in these foundations. Additional damping attenuates the high magnitude and high frequency of impact generated transient vehicle- track vibrations. This report covers the...Spatial Analysis of Childhood Leukemia in Relation to 25-Hz and 60-Hz Magnetic Fields Along the Washington-New Haven Rail Line
The failure to observe increased leukemia in laboratory animals with chronic exposures to a wide range of power frequency (50/60 Hz) magnetic field intensities contrasts with an apparent association between proxies for magnetic field exposure above 0.3 or 0.4 pT and childhood leukemia in case...Locomotive Crashworthiness Impact Test No. 1: Test Procedures, Instrumentation and Data
A full-scale locomotive impact test was performed August 1, 2002. The test involved a SD-45 locomotive, modified to meet AAR Specification S-580, and three trailing loaded hopper cars impacting a stationary consist of 35 loaded hopper cars at 32 mph. There was a large amount of damage to the pilot...Guidelines for Estimating Trip Times, Energy Use and Emissions for HSGT Technologies
In the present report, the task of estimating, quantitatively, the energy use and emissions associated with the introduction of maglev as a new mode of mass transportation is addressed. For comparison purposes, methods of estimating those quantities for more conventional modes of transportation...
An Examination of Amtrak's Acela High Speed Rail Simulator for FRA Research Purposes
Amtrak recently completed upgrading the northeast corridor (NEC) to become the nation’s first high speed rail corridor. As part of this upgrade, Amtrak acquired a simulator to train its locomotive engineers on the operation of the new Acela trainsets that will run along the NEC. The U.S....