ACOUSTIC FLAW DETECTION IN RAILWAY WHEELS

Ultrasonic pulse propagation has been studied in quarter-scale model railway wheels. Surface waves traveling around the tread of a wheel have been used to detect simulated thermal cracks using both pulse echo and attenuation methods. Pulse echoes from simulated plate flaws have been found using a transducer positioned on the tread surface to produce Lamb waves in the plate. Plate flaws have also been detected from the differences in the audio frequency acoustic radiation spectra of good and defective quarter-scale models, using a real time analyzer. The extension of this work to full size wheels with actual defects is currently in progress.

Media Info

  • Pagination: p. 194-198

Subject/Index Terms

Filing Info

  • Accession Number: 00072703
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Conf Paper
  • Files: TRIS
  • Created Date: Jan 16 1976 12:00AM