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1 Mar 1986

Technical Reports

Effects of Rail Profile Variation

Author
G. W. Walker

Subject Rail and Infrastructure Integrity

Keywords: Heumann Wheel Profile, Rail Corrugation, Rail Grinding, Rail Wear, Rail Wheel Radius

Abstract: Railroads in various countries including the United States have found that benefits may be obtained by grinding rails to an 'asymmetric' profile rather than to the original 'new'...

Report Number
DOT/FRA/ORD-86/04
Office
RDI-20

1 Dec 1985

Technical Reports

Structure and Properties of Thermite Welds in Premium Rails

Author
L.C. Schroeder and D.R. Poirier

Subject Rail and Infrastructure Integrity

Keywords: Mechanical Properties, Residual Stresses

Abstract: Thermite welds were used to join combinations of premium rails and AREA Controlled Cooled Carbon rails (i.e., standard rails). The premium rails comprised head-hardened rails and...

Report Number
DOT/FRA/ORD-85/02
Office
RRD

1 Jan 1985

Technical Reports

Physical Response of Flat Steel Plates to Drop Hammer Impacts

Author
William P. Wright, Wayne A. Slack, Willis F. Jackson

Subject Evaluation

Keywords: Railroad Tank Cars, Safety, Structural Response

Abstract: A series of impact tests using the FRA/BRL Drop Hammer Facility was performed. The tests consisted of the creation of controlled damage to flat steel plates which had properties...

Report Number
FRA/ORD-84-07
Office
RRD

1 Jun 1984

Technical Reports

Wheelclimb Derailment Processes and Derailment Criteria

Author
L.M. Sweet, A. Karnel

Subject Facilities & Test Equipment, Track/Train Interactions

Keywords: scale model testing, wheelset dynamics

Abstract: 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...

Report Number
DOT/ FRA/ORD-84/05
Office
RRD

1 Jun 1984

Technical Reports

Validation of Track Geometry Input to the Vibration Test Unit (VTU) and the Endurance Capability of the VTU

Author
Britto R. Rajkumar, F. D. Irani

Subject Facilities & Test Equipment

Keywords: Carbody Response, Lading Response, Locomotive Track Hazard Detector, LTHD

Abstract: This report describes a series of tests conducted at the Transportation Test Center, Pueblo, Colorado, to validate two forms of track geometry inputs to the Vibration Test Unit (...

Report Number
FRA/ORD-84/09
Office
RRD