General

Fire Behavior of Transformer Dielectric Insulating Fluids

This report presents results for the fire behavior of pure and askarel-contaminated Fluids which are candidates for use as railroad transformer dielectric insulating fluids. In the study a hydrocarbon and a dimethyl-siloxane fluid were examined. The fire behavior of the fluids was examined on...

Sleeve Expansion of Bolt Holes in Railroad Rail Volume Ill - Field Experiment ResuIts

The bolt-hole cold-expansion process has been demonstrated by laboratory tests to significantly affect the initiation and propagation of fatigue cracks from rail bolt holes such that a reduction of the incidence of rail-bolt-hole failure in cold-expanded rail would be expected. A field-...

Sleeve Expansion of Bolt Holes in Railroad Rail Volume I - Description and Planning

The most predominant failure mode of rails with bolt joints 1s a web crack initiating at the rail bolt hole. This failure mode is of a classical fatigue nature induced by web stress concentration around the bolt hole. This program was conducted to apply a metal-working process to the rail bolt...

Development, Fabrication, and Testing of Inverter Power System for Metroliner

This report documents the development and subsequent fabrication of a solid state auxiliary power conditioning unit for the upgraded Metroliner. The APCU is an inverter of the pulse width modulated type having multiple parallel transistors in a three phase double way bridge configuration. The...

Description of Computer Program for Calculation of Temperatures, Pressures, and Liquid Levels of Tank Cars Engulfed in Fires: Volume II, Description of Analytical Procedure

This report describes work that has been carried out under Federal Railroad Administration Contract No. DTFR53-81-C-00016, Task Order VC-4, entitled "Temperatures, Pressures and Liquid Leve1 s of Tank Cars Engulfed in Fires". The objective of this task order was the further development and...

Effect of Missing or Broken Fasteners on Gage Restraint of Concrete Ties

From 2009 to 2010, the Transportation Technology Center, Inc., measured the gage restraint of a mainline concrete tie track affected by missing or broken fasteners. Measurements were taken at the Facility of Accelerated Service Testing and in revenue service. The following was discovered: 1)...

Sacramento California Variable Refrigerant Flow (VRF) System Buy America Waiver Decision

Flywheel Energy Storage Switcher Volume I -- Study Summary and Detailed Description of Analysis

An in depth study of the application of flywheel energy storage to the railroad switchyard locomotive was conducted to determine the practicality and viability of such a system. The system, as originally conceived, required the use of separately excited fraction motors, and a major task of the...

Wheel Failure Mechanisms of Railroad Cars- Interim Report

This Interim Report of the FRA sponsored Wheel Failure Mechanism Program was prepared in fulfillment of contractual requirements to provide a major mid-term technical progress report on the status of on-going research. It is not a final report, and although it does provide technical highlights and...

Vehicle Proximity Alert System: Prototype 3

As part of FRA Task Order 114, the Association of American Railroads Transportation Technology Center, Pueblo, Colorado, completed testing of Vehicle Proximity Alert System (VPAS) Prototype System 3. VPAS systems are designed to give priority vehicle operators (emergency, police, school buses,...

« First
‹‹
…
447
448
449
450
451
452
453
454
455
…
››
Last »

USA Banner

General