ON THE ULTRASONIC RAIL INSPECTION CAR

Seventy percent of rail failures are located in the joint areas starting from the bolt hole, but these defects could not be found out by the electro-magnetic method. The new ultrasonic rail flaw detector car was designed and manufactured by the Railway Technical Research Institute, Japanese National Railways. Results of the tests are summarized as follows: (1) up to a test speed of 35 km/h records are satisfactory, (2) at a higher speed than that the recording of joint areas becomes unreliable, (3) jumping tendency of probe was avoided by elongation of shoes and water supply devices, (4) a revolving type searching unit has been manufactured and a test is now continuously being carried out.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3127232
• Corporate Authors:

  JAPANESE NATIONAL RAILWAYS

  TOKYO,   Japan 
• Authors:
  • Nakamura, R
  • Tsuchidana, T
• Publication Date: 1963-9

Media Info

• Pagination: p. 53-55
• Serial:
  • Railway Technical Research Institute, Quarterly Reports
  • Volume: 4
  • Issue Number: 3
  • Publisher: Railway Technical Research Institute/Tetsudo Gijutsu Kenkyujo
  • ISSN: 0033-9008
  • Serial URL: http://www.rtri.or.jp/eng/

Subject/Index Terms

• TRT Terms: Inspection; Inspection cars; Maintenance of way; Railroad rails; Railroad tracks; Technology
• Geographic Terms: Japan
• Old TRIS Terms: Rail inspection; Track maintenance equipment
• Subject Areas: Maintenance and Preservation; Railroads;

Filing Info

• Accession Number: 00033252
• Record Type: Publication
• Report/Paper Numbers: Quart Rpt
• Files: TRIS
• Created Date: Jul 8 1994 12:00AM