Putting the breaks on hump yard noise

A source of friction often between the railway and its neighbors are noise emissions from hump yard retarders. However, as this article reports, there are new technologies from Sona, Germany and Elpa, Slovenia, which have successfully reduced noise emissions at Nuremberg's German Rail hump yard. In one case, a cast composite metal is bolted to the brake beam with a damping plate that reduces friction noise. In another case, an environmentally-friendly abrasive material is applied to the wagon wheel flank in contact with the rail brake, which creates an intermediate layer of material that is thermally decomposed during the braking process, which releases kinetic energy that is converted into heat and not sound, thereby reducing the braking noise at its source.


  • English

Media Info

  • Media Type: Print
  • Features: Figures; Photos;
  • Pagination: pp 43-44
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01484612
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 20 2013 7:23PM