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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1,147 Technology Digests

Date Posted:
By
  • Dingqing Li
  • Abe Meddah
  • David Davis
  • Ed Kohake
Tags:
  • heavy axle load (HAL)
  • insulated joints
  • mega site test program
Date Posted:
By
  • Duane Otter
  • Steven Clark
  • Brian Doe
Tags:
  • bridge
  • economics
  • heavy axle load (HAL)
  • speed
  • traffic density
Date Posted:
By
  • Dio Yoshino
  • Duane Otter
Tags:
  • acoustic emissions
  • crack growth
  • fatigue
  • remote monitoring
  • steel bridge
Date Posted:
By
  • Harry Tournay
  • Sam Chapman
  • Russell Walker
Tags:
  • hunting detectors; Salient Systems; Hunting Index; Hunting Truck Detector
Date Posted:
By
  • Francisco Robles Hernandez
  • David Davis
  • Demircan Canadine
  • Huseyin Sehitoglu
  • Kevin Verzal
  • Yanyao Jiang
Tags:
  • bainitic rail (J6)
  • material charactistics of rail steels
  • rolling contact fatigue (RCF)
Date Posted:
By
  • Huimin Wu
  • Benjamin Madrill
  • Semih Kalay
Tags:
  • AAR-1B
  • new wheel profile
  • TTCI-1A
  • vehicle curving performance
Date Posted:
By
  • Dingqing Li
  • Charity Duran
  • Russell McDaniel
Tags:
  • bridge approach
  • eastern mega site
  • open deck bridge
  • problems and remedies
Date Posted:
By
  • Matthew Witte
  • Duane Otter
  • Chris Pinney
  • MaryClara Jones
Tags:
  • end to end imbalance
  • imbalance loads
  • overload
  • side to side imbalance
  • unbalanced loads
  • wayside detectors
Date Posted:
By
  • David Read
  • Duane Otter
  • Brian Doe
Tags:
  • bridge
  • bridge deck
  • continuous welded rail (CWR)
  • expansion joint
  • longitudinal force
  • thermal forces
  • welded rail
Date Posted:
By
  • Muhammad Akhtar
  • Duane Otter
  • Brian Doe
Tags:
  • bridge approach
  • concrete bridge
  • concrete ties
  • impact
  • stress distribution
  • tamping
  • tie pads
  • timber ties
  • wood ties
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