Annual trend of rail failures of the Japanese National Railways in recent years amounted to 5264 in 1963. There are included in rail failures the numbers of broken rails, cracked rails and defective rails all together, they do not always cause interference to train operation. It is known from the figures that end break ranks the first and amounts to more than 60 percent. The number of end breaks is divided into two parts, namely in tunnels and out of tunnels. End breaks in tunnels are more frequent for their track length and the rails in tunnel have shorter life than the ones out of tunnels, due to unfavorable conditions of corrosion in tunnels of our country. End breaks almost occur as results of rail fatigue by train loads. Stress induced on rail varies in magnitude according to train speed, wheel load, lateral force and position of wheel contact on rail, and the stress distribution was found in many measurements to be a normal distribution or its combination in most cases.

  • Availability:
  • Corporate Authors:


    TOKYO,   Japan 
  • Authors:
    • SATO, Y
  • Publication Date: 1966-3

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00033322
  • Record Type: Publication
  • Report/Paper Numbers: Quart Rpt
  • Files: TRIS
  • Created Date: Jul 7 1976 12:00AM