Technical Reports

Noise Test-Resilient Wheels Massachusetts Bay Transportation Authority Green Line

  • 01
  • Nov
  • 1982
AUTHOR: E.J. Rickley, M.J. Brien
SUBJECT: Evaluation
KEYWORDS: Resilient Wheels, Solid-Steel Wheels, Wheel Squeal, Ground-borne Vibration, Rapid Transit Noise
ABSTRACT: The purpose of this effort was to compare the noise and vibration characteristics of the Sab-V resilient wheels with those of Acoustaflex (resilient) and solid-steel wheels, which are both in current use on the Green Line of the Massachusetts Bay Transportation Authority (MBTA). Noise and ground -borne vibration level measurements were made on February 9, 1982, on three rail transit vehicles operation on the Green line. Two Boeing Light Rail Vehicles (LRV) and one Presidential Conference Committee (PCC) car were each equipped with a different wheel set: Sab V, Acoustaflex (both resilient), and solid steel, respectively. Noise was measured inside the vehicles in the passenger seating areas and at wayside locations where ground-borne vibration was also measured. The data presented includes comparative noise and vibration time histories, one-third octave and narrow band spectral analysis, and in-car statistical noise data.