The on-train monitoring system involves thermal sensing and shock detection which can indicate derailment. Activation of any sensor on a freight car produces a pulse of electrical energy that in turn fires an explosive valve, thereby venting the brake line and activating the braking system. The thermal sensor continuously monitors temperature of solid or roller journal bearings. The shock environment of derailment differs little from that of some normal over-the-road environments and this sensing system is being refined.

  • Supplemental Notes:
    • Presented at the 26th Meeting of the NBS' Mechanical Failures Prevention Group (MFPG), held at the ITT Research Institute, Chicago, Illinois, May 17-19, 1977.
  • Corporate Authors:

    National Bureau of Standards

    Institute for Materials Research, Metallurgy Division
    Washington, DC  United States  20234
  • Authors:
    • O'Steen, J K
  • Publication Date: 1977-9

Media Info

  • Features: Figures;
  • Pagination: p. 191-204

Subject/Index Terms

Filing Info

  • Accession Number: 00165075
  • Record Type: Publication
  • Report/Paper Numbers: NBS Spec Pub. 494 Conf Paper
  • Files: TRIS
  • Created Date: Nov 23 1977 12:00AM