An automatic base gate positioning circuit for use in rail flaw detection is disclosed which includes the generation of a string of uniformly spaced pulses corresponding to known rail depth, correlating said pulses with sonic echoes, averaging and storing the correlated signals, and developing a signal representing the rail depth for comparison with an echo from the rail base.

  • Supplemental Notes:
    • This Government-owned invention available for U.S. licensing and, possibly, for foreign licensing. Copy of application available NTIS.
  • Corporate Authors:

    Department of Transportation

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Rudis, R P
    • Ceccon, H L
  • Publication Date: 1978-5-16

Media Info

  • Pagination: 21 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00181032
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: PAT-APPL-903 518, DOT/CASE-TSC-10116
  • Files: TRIS, USDOT
  • Created Date: Sep 14 1978 12:00AM