The newly designed 50 T rail was adopted for the New Tokaido Trunk Line, and 50 N and 40 N rails were also adopted in place of PS 50 and ASCE 37 rails which had been used for more than 40 years. Concerning the test standards for these new rails, the drop test standard was studied and is reported in this paper. Property of rail strain was studied in the test performed according to the Japanese Industrial Standards with the test machine at the Fuji Steel Co. When a drop weight touches the rail, strain in every part undergoes a change instantly. In the beginning, strain oscillates, and when the domain of plastic deformation is reached, it grows smoothly to the maximum value in the elapse of 7/1000 seconds, then it reduces and turns sharply in 13/1000 seconds, and there after it returns to zero lines.

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    TOKYO,   Japan 
  • Authors:
    • Satoh, Y
  • Publication Date: 1962-6

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  • Accession Number: 00033257
  • Record Type: Publication
  • Report/Paper Numbers: Quart Rpt
  • Files: TRIS
  • Created Date: Jul 8 1994 12:00AM