General

Tank Car Nondestructive Evaluation

An evaluation of nondestructive evaluation (NDE) methods, authorized for use in replacing the current hydrostatic pressure test for qualification or re-qualification of railroad tank cars, has been performed by the Transportation Technology Center, Inc. (TTCI), a subsidiary of the Association of...

Supplemental Tests for Track Panel Shift Investigations

Volpe National Transportation Systems Center (VNTSC) has created a model to predict, among other things, panel shift behavior of track structure. A series of tests was performed in October 1998 by Transportation Technology Center, Inc. (TTCI), a subsidiary of the Association of American Railroads,...

Stub Sill Tank Car Research Project Results of a 15,000 Mile Over the Road Test

The Federal Railroad Administration (FRA) has been investigating incidents of fatigue cracking of the stub sill and at the attachment of the stub sill to the tank shell of stub sill type tank cars. Over 162,000 of these cars have been placed in service since 1950. The FRA has also issued Emergency...

A Structural Survey of Classes of Vehicles for Crashworthiness

This document reviews three phases of a study conducted to evaluate and improve the crashworthiness of passenger carrying vehicles in intercity service. Phase I surveyed the accident data over a period 1966 to 1973 and identified those areas responsible for the mS3jority of accidents involving...

Stub Sill Tank Car Research Project: Full-Scale Damage Tolerance Test

The Federal Railroad Administration, with supplemental support from the Railway Progress Institute, contracted with the Association of American Railraods (AAR), Transportation Technology Center, Inc., a subsidiary of the AAR, to conduct a full-scale damage tolerance analysis (DTA) validation test...

Wayside Energy Storage Study Volume IV - Dual Mode Locomotive: Preliminary Design Study

This is the fourth volume of a four volume report entitled the Wayside Energy Storage Study, which comprises the following volumes: Volume I-Summary; Volume II-Detailed Description of Analysis; Volume III-Engineering Economics Analysis:Data and Results; Volume IV-Dual-Mode Locomotive: Preliminary...

Stub Sill Tank Car Research Project: Full-Scale Damage Tolerance Test

In 1992, the National Transportation Safety Board recommended that tank car structures be designed using a damage-tolerant philosophy similar to that utilized by the aircraft industry. Toward that end, the Southwest Research Institute was engaged to assist in the development and implementation of a...

The Application of Quasi-Linearization Techniques to Rail Vehicle Dynamic Analyses

The objective of the work reported here was to define methods for applying the describing function technique to realistic models of nonlinear rail cars. The describing function method offers a compromise between the accuracy of nonlinear digital simulation and the computational efficiency of...

Steady State Curving and Wheel/Rail Wear Properties of a Transit Vehicle on the Tight Turn Loop

This report describes the results of a test series carried out on the Tight Turn Loop at the Transportation Test Center to assess the curving and wheel/rail wear performance of a transit vehicle negotiating a very tight turn. Tests were performed on unlubricated rail to ensure constant coefficients...

Development and Deployment of a Vehicle Tracking System at the Transportation Technology Center

A vehicle tracking system (VTS) was installed and deployed at the Federal Railroad Administration's Transportation Technology Center (TTC) in November 2002. The fundamental goal of this program was to enhance the already high level of safety for TTC personnel in a spread out field test environment...

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General