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Measurement of Truck Tire Noise Using a Single-Wheel Trailer
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Sector:
Event:
Highway Tire Noise Symposium
Language:
English
Abstract
Tire noise research at the GM Research Laboratories has centered around on-the-road testing with a variable-loading, single-wheel trailer consisting essentially of a truck wheel at the end of a forty foot beam. This approach has proved to be highly satisfactory since it can be used to make realistic tests of the noise from a single truck tire, in isolation from other noise sources and free from interference by echoes from the vehicle structure.
Measurement procedures have been developed both for semi-circular arrays of microphones on the ground and microphones and accelerometers traveling with the test tire. For the stationary semi-circular arrays, a digital analysis procedure has been developed to determine the narrow-band spectra and the radiation patterns of the sound emitted by the moving tire as it passes through the center of the semi-circular array. The associated computation includes corrections for the varying source-receiver distance during the time interval of the data, small run-to-run variations in the test conditions, and Doppler shift. In this way the power spectra and the radiation patterns are determined as if the semi-circular array were moving with the tire at a fixed radius. For microphones moving with the trailer, signal averaging methods are utilized to reduce background noise, especially wind noise. Also a new coherence-function method that eliminates wind noise in a system of three microphones has recently been developed and is currently being used for far-field measurements.
The tire noise trailer could be used for development work as well as for research. It might also be considered for qualifying tires.
Authors
Citation
Wilken, I. and Hickling, R., "Measurement of Truck Tire Noise Using a Single-Wheel Trailer," SAE Technical Paper 762014, 1976, https://doi.org/10.4271/762014.Also In
References
- Wilken I. D. Hickling R. Wiknich H. V. “A Single-Wheel Trailer for Tire Noise Research.” SAE Transactions 83 1974 Paper 740109
- Chung J. Y. Wilken I. D. “A Technique for Measuring the Sound of a Moving Source.” Journal of Sound and Vibration
- Wilken I. D. Oswald L. J. Hickling R. “Research on Individual Noise Mechanisms of Truck Tires: Aeroacoustic Sources.” 70 “SAE Highway Tire Noise Symposium.” Warrendale Society of Automotive Engineers, Inc. 1977 Paper 762022
- Chung J. Y. “The Rejection of Flow Noise Using a Coherence Function Method.” Journal of the Acoustical Society of America
- Wilken I. D. Hickling R. Wiknich H. V. “A Single-Wheel Trailer for Tire Noise Research.” General Motors Research Laboratories Publication GMR-1496 1973
- Oswald L. J. Hickling R. “Possible Effects of Vehicle Aerodynamic Noise on J57a Passby Noise Measurements.” 70 “SAE Highway Tire Noise Symposium.” Warrendale Society of Automotive Engineers, Inc. 1977 Paper 762019