USE OF COHERENCE AND FREQUENCY RESPONSE FUNCTIONS TO LOCATE AND DEFINE VIBRATION NOISE SOURCES IN ROLLING TIRES

The procedure for measuring and analyzing in-service tire vibration and sound data is described. Signal analysis techniques are applied to obtain tire vibration spectral histories, vibration-to-sound coherence, and vibration frequency response functions. Evaluation of the coherence function demonstrates the existence of a statistical relationship between tire vibration and sound. Vibration spectral histories display the decay of energy in the tire structure. Use is made of the frequency response function to determine the relative levels of vibration in the tread and sidewall regions. These results define the vibration noise source location and size. /HSRI/

• Supplemental Notes:
  • This paper was presented at the International Automotive Engineering Congress and Exposition held by the Society of Automotive Engineers in Detroit, February 28-March 4, 1977. Research sponsored by the Department of Transportation.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Eberhardt, A C
  • Reiter, W F
• Publication Date: 1977

Media Info

• Features: Figures; References;
• Pagination: 6 p.

Subject/Index Terms

• TRT Terms: Acoustics; Frequency response; Measurement; Signalization; Sound level; Timber; Tire treads; Vibration; Wear
• Uncontrolled Terms: Signal analysis
• Old TRIS Terms: Timber (Structural)
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00152962
• Record Type: Publication
• Source Agency: Highway Safety Research Institute
• Report/Paper Numbers: SAE 770027
• Files: TRIS
• Created Date: Jun 22 1977 12:00AM