This report describes the data analysis from laboratory investigations conducted to determine whether acoustic techniques can be used on the wayside to reliably detect faulty bearings in railroad cars. Tests were conducted using a roller bearing test facility. A set of baseline measurements was first obtained using bearings with no defects. Several bearings with known defects were then tested at speeds and loads typically experienced by rail car bearings. Acoustic signals were recorded in two directions using two microphones mounted at 45 degrees from each other, covering an extended range of wheel rotation. A bearing diagnostic method based on pattern recognition of statistical parameters was investigated based on signals from one microphone. Techniques were developed to classify and identify six commonly occurring freight car bearing defects.

  • Corporate Authors:

    Transportation Development Centre

    Complexe Guy Favreau, 200 Dorchester Blvd West, Suite 601
    Montreal, Quebec H2Z 1X4,   Canada 
  • Authors:
    • Krishnappa, G
    • Donovan, M
  • Publication Date: 1999


  • English

Media Info

  • Pagination: 52 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00801001
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 31 2000 12:00AM