PROPAGATION OF SURFACE PERTURBATIONS IN RADIALLY LOADED WHEELS ROLLING OVER EACH OTHER

FORTPFLANZUNG VON OBERFLAECHENSTOERUNGEN BEIN AUFEINANDER ABROLLENDEN RADIAL BELASTETEN RAEDERN

Rolling test-rig trials were conducted in which railway wheel sets ran under normal load without slip and at constant speed upon rail profiled wheel sets. The wheel sets experienced occasional interference owing to the occurrence of periodic pitting or grooving in the running surfaces. In every case the mating wheels indicated an equivalent number of wear periods. Although of equal periodic length, the wear phenomena were of varying character such that they could not have been due to a reciprocal pressure process. It was demonstrated that the length and pitch of the wear periods could be explained as being due to surface wave pulses of propagation velocity c = 2950 m/s circulating on both wheels. Relations between wheel diameters, running speed and velocity c were formulated, under which (at adequate load application) periodic pitting or grooving could be expected to occur in the contact area. The surprising recurrence of extremely minute wear pits of less than 1 mm in size and the occurrence of pits and grooves at equidistant lateral intervals led to the assumption that, generally, interaction between acoustic emission and pitting can occur, in the course of which "coherent" ultrasonic waves are induced.

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  • Corporate Authors:

    Elsevier Science S.A.

    P.O. Box 564
    CH-1001 Lausanne 1,   Switzerland 
  • Authors:
    • Werner, K
  • Publication Date: 1978-7

Language

  • German

Media Info

  • Features: References;
  • Pagination: p. 85-118
  • Serial:
    • Wear
    • Volume: 49
    • Issue Number: 1
    • Publisher: Elsevier Science S.A.
    • ISSN: 0043-1648

Subject/Index Terms

Filing Info

  • Accession Number: 00184969
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Jan 13 1979 12:00AM