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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1,148 Technology Digests

Date Posted:
By
  • Scott Gage
  • Duane Otter
Tags:
  • concrete tie
  • heavy axle loads
  • tie strai
Date Posted:
By
  • Stephen Mace
  • Jon Hannafious
Tags:
  • differentially worn treads
  • NUCARS
  • poor steering characteristics
  • tapered wheel sets
Date Posted:
By
  • Gregory Garcia
  • Jon Hannafious
Tags:
  • maintenance welds
  • Thermite Weld Performance under Heavy Axle Load Operations at FAST® modifications of standard mold design
Date Posted:
By
  • Scott Gage
  • Richard Reiff
Tags:
  • Convex rail seats
  • dual durometer materials
  • pad materials
  • repair techniques
  • sandwich materials
  • sealant
  • steel plate and resilient material on one pad
Date Posted:
By
  • Carmen Trevizo
Tags:
  • Douglas fir ties
  • lateral load environment
  • oak ties
Date Posted:
By
  • Richard Cataldi
  • Steven Fritz
  • Vernon Markworth
  • Robert Mason
Date Posted:
By
  • Ali Tajaddini
Tags:
  • ballast and deck beams
  • bridge stringers
  • floor beam
  • wheel/rail interface
Date Posted:
By
  • Gregory Garcia
Tags:
  • head hardened rail
  • Results of Rail Wear Tests at FAST® standard rail
Date Posted:
By
  • Duane Otter
  • Joseph LoPresti
Tags:
  • 89-degree reversible manganese insert crossing
  • hardening of castings
  • lower crossing angle
  • smaller effective gap
  • smoother running surface
Date Posted:
By
  • John Choros
  • Scott Schiff
Tags:
  • analytical modeling
  • floor beam connection stiffness
  • knee brace
  • low stresses
  • very low strains
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