Facilities & Test Equipment

Broad Agency Announcement - BAA 2017

Wheel Load Cycle Tag for Rail

The Federal Railroad Administration (FRA) has determined that there is a research need to collect and analyze statistical usage data to help ascertain the cumulative load-induced fatigue on rail track segments. The estimation of rail segment burdening through the determination of loaded or unloaded...

MARTA "C" Car: Thermal Capacity Test

A Special Engineering Test was conducted on Metropolitan Atlanta Rapid Transit Authority (MARTA) Car 502 to determine the operating temperature at various undercar locations during worst-case simulated revenue service while operating at AW2 weight (100,000 lbs). This simulated revenue service was...

Tread Crack Detection in Railroad Wheels: An Ultrasonic System Using EMATS

This is report number 22 in a series .covering research performed by the National Institute of Standards and Technology (NIST) for the Federal Railroad Administration (FRA). This report covers a project by the Materials Reliability Division (formerly the Fracture and Deformation Division) to...

Railroad Car Coupling Shock, Vertical Motion, and Roller Bearing Temperature

Data were collected in a study of railroad car operating environment. Measurements were made on wheel bearing operating temperatures, coupling impact shock, and vertical motion of the car due to rail travel. Tests were conducted using an instrumented consist at the Transportation Test Center (TTC)...

High Cant Deficiency Test of the F40PH Locomotive and the Prototype Banking Amcoach

Increasing the speed of passenger trains in existing curves has been proposed as an alternative to changing curve radii for the purpose of reducing trip times on the Northeast Corridor. Tests were performed on the F40PH diesel-electric locomotive and an Amcoach modified for banking, with and...

Roller Bearing Failure Mechanisms Test and Wheel Anomaly Test Report

A series of roller bearing performance tests were performed by the Association of American Railroads (AAR) as part of a Federal Railroad Administration (FRA) Task Order entitled "Freight Car Equipment Research." The objectives of these tests were to investigate the performance of degraded roller...

High Cant Deficiency Testing of the LRC Train, the AEM-7 Locomotive, and the Amcoach

Increasing the speed of passenger trains in existing curves has been proposed as an alternative to changing curve radii for the purpose of reducing trip times on the Northeast Corridor. This test evaluates safety at high cant deficiency by comparing direct wheel/rail force measurements to safety...

Railroad Research and Development : Summary Results of 70 Ton Boxcar Testing

Tests were performed at the Transportation Test Center in Pueblo, Colorado on a 70 ton boxcar with Barber S-2C trucks in April and May of 1981. The objective of the tests was to provide definition of the dynamic properties of the freight car for application to the validation of a mathematical...

Wheelclimb Derailment Processes and Derailment Criteria

The most widely accepted criterion for wheelclimb derailment defines an upper limit for safe operation on wheel/rail contact forces on the climbing wheel, with the limit varying with time duration of the forces. For dynamic wheelclimb processes with significant lateral velocities, lateral forces...

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Facilities &amp; Test Equipment

Facilities & Test Equipment