Technology Digests

MxV Rail’s Technology Digest e-Library spans over 30 years of research and testing for the Association of American Railroads (AAR). This work was made possible by the support of the AAR and its member railroads, as well as additional partners including the Federal Railroad Administration, suppliers and vendors, and allied universities.

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1,138 Technology Digests

By
  • Devin Sammon
  • Harry Tournay
  • Jessica Pittman
Tags:
  • asymmetric wheel flange wear (AWFW)
  • brake performance
  • Brakes
  • M-976 trucks
By
  • David Davis
  • Rafael Jimenez
  • Abe Meddah
  • Nigel Peters
Tags:
  • ballast performance experiment
  • cold climated
  • heavy axle load oeprations
  • insulated joint performance experiment
  • Manitoba
  • northern mega site
  • rail flaw growth experiment
  • rail wear experiment
  • tie plate size experiment
  • Winnipeg
By
  • Daniel Gutscher
  • Joseph LoPresti
Tags:
  • AREMA guidelines
  • head alloyed thermite weld
  • high strength rail
  • Inc.
  • increased running surface hardness
  • Orgo-Thermit
  • rail welding
  • slow bend testing
  • standard thermite welds
By
  • Matthew Witte
  • Daniel Carter
  • Lucas Welander
Tags:
  • AAR freight car wheels
  • automated cracked wheel detector (ACWD)
  • back-of-flange climb derailments
  • derailment risk
  • gage widened special trackwork
  • lateral and vertical stiffness of track
  • NUCARS
  • wheel drop
By
  • Kevin Koch
Tags:
  • buff and draft coupler force data
  • coupler knuckle fatigue damage
  • dynamic load data
  • end-of-car (EOC) cushioning units
  • load environment severity
  • long travel cushioning units
  • peak draft forces
  • standard travel drawgear
By
  • Muhammad Akhtar
  • David Davis
Tags:
  • cross section profile
  • fatigue cracks
  • heavy axle load track tests
  • machined bar surfaces
  • material properties
  • standard joint bars
  • stress raisers
By
  • Curt Mademann
  • Duane Otter
Tags:
  • ballast depth
  • ballasted deck concrete bridges
  • concrete ties with a ballast mat
  • heavy axle load
  • plastic ties
  • prestressed concrete spans
  • reduced impacts
  • track stiffness
  • track surfacing maintenance
  • under-tie rubber pads
  • wood ties
By
  • Daniel Gutscher
Tags:
  • chill blocks
  • heat affected zone (HAZ) degradation
  • low hardness HAZ width
  • overlay treatments
  • rail welding
By
  • Huimin Wu
  • Rama Krishna Maram
  • Brad Kerchof
  • Kevin Conn
Tags:
  • lateral forcers
  • rail roll
  • top of rail friction modifier
  • TORFM
  • wheel/rail interface
  • wheelset steering ability
By
  • Muhammad Akhtar
  • David Davis
  • Russ Hein
Tags:
  • AREMA No. 24 switch design
  • crossovers
  • lateral forces
  • reduced entry angle
  • Special Trackwork
  • Turnouts
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