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31 Dec 2014

Technical Reports

Broken Rims in Railroad Wheels

Author
Federal Railroad Administration

Keywords: Railroad; Wheel; Crack; Rim; Broken; Broken Rims in Railroad Wheels

Abstract: Broken wheels are one of the most common types of equipment-caused train accidents. The failure of rail car wheel rims, which are usually the result of shattered rims or vertical...

Report Number
DOT/FRA/ORD-14/41
Office
RDI-22

31 Dec 2014

Technical Reports

Track Profile Approximation Using Railcar Body Acceleration Data

Author
Federal Railroad Administration

Keywords: Track geometry; vehicle-track interaction; ride quality; Track Profile Approximation Using Railcar Body Acceleration Data

Abstract: Accelerations are frequently measured from the car body of a rail vehicle, which is mounted above one or more suspension systems. Measuring accelerations in the car body is...

Report Number
DOT/FRA/ORD-14/42
Office
RDI-21

31 Dec 2014

Research Results

Autonomous Broken Rail Detection Technology for Use on Revenue Service Trains

Author
Federal Railroad Administration

Keywords: broken rail; wavelet analysis; Autonomous Broken Rail Detection Technology for Use on Revenue Service Trains

Abstract:

ENSCO Inc. in collaboration with Virginia Tech (VT) has developed, tested, and integrated a wavelet-based broken rail detection algorithm. This algorithm utilized acceleration...

Report Number
RR 14-40
Office
RDI-23

31 Dec 2014

Research Results

Crippling Test Of An M1 Passenger Railcar

Author
Federal Railroad Administration

Keywords: Occupant volume integrity; OVI; crippling; strength; alternative criteria;

Abstract:

Occupied volume integrity (OVI) refers to a passenger railcar’s ability to preserve interior cabin space for passengers and crew during an accident. By preventing or minimizing...

Report Number
RR 14-43
Office
RDI-22

23 Dec 2014

Quarterly Performance Reports

Rail Service Metrics and Performance: Quarter Ended September, 2014 (Fourth Quarter of Fiscal Year 2014)

Author
Federal Railroad Administration

Keywords: Rail Service Metrics and Performance: Quarter Ended September, 2014 (Fourth Quarter of Fiscal Year 2014)

Office
RPD-22