INVESTIGATIONS OF A BEARING FAULT DETECTOR FOR RAILROAD BEARINGS

The laboratory tests are described which were conducted on new and damaged bearings to determine the feasibility of using high-frequency vibration as a diagnostic tool. A high-frequency band pass filter and demodulator was assembled to permit field measurements of the high-frequency vibrations. Field tests were conducted on an actual truck and on an axle assembly run in a grease test rig. These field tests were directed toward demonstration of the suitability and capabilities of the high-frequency technique for field application. Two specific areas of field application were identified as being cost effective for railroad use. One area is the examination of railroad roller bearings at a derailment site, and the second is as a wayside detector to supplement present hot box detectors for defective roller bearings. (Author)

• Corporate Authors:

  Shaker Research Corporation

  Northway 10 Executive Park
  Ballston Lake, NY  United States  12019
• Authors:
  • WILSON, D S
  • Frarey, J L
• Publication Date: 1975

Media Info

• Pagination: 46 p.

Subject/Index Terms

• TRT Terms: Cost effectiveness; Crash investigation; Derailments; Detectors; Feasibility analysis; Filters; High frequency; Inspection; Measurement; Performance tests; Railroad transportation; Roller bearings; Vibration; Vibration tests
• Old TRIS Terms: Bandpass filters; Vibration measurement
• Subject Areas: Railroads; Safety and Human Factors;

Filing Info

• Accession Number: 00094671
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NASA-CR-144114
• Contract Numbers: NAS8-31449
• Files: TRIS
• Created Date: May 14 1976 12:00AM