01373782

Component

In recent years, one version of on-board sound intensity (OBSI) method has been developed and applied in California for measuring tire/pavement noise. To harmonize OBSI measured under different conditions, this study investigates the combined effects of test tire, test speed, sound analyzer equipment, and pavement temperature on OBSI measured near the tire/pavement interface. Two factorial experiments were conducted on several pavement sections around Davis and Los Angeles with two test tires, two test speeds, two sound analyzers, and two pavement temperature levels. Results showed that all of four factors significantly affect measured OBSI values. The interactions between analyzer type and other factors (speed, tire type, and pavement temperature) are generally insignificant for OBSI at all frequency levels. The effect of test tire type on OBSI, however, changes with test speed and pavement temperature at both low and high frequencies. In a third experiment, the effect of different tires of the same type was evaluated, and it was found that the same type of tires may produce significantly different OBSI measurements. Based on the analysis results, a series of frequency-by frequency calibration equations were developed.

This paper was sponsored by TRB committee ADC40 Transportation-Related Noise and Vibration

01362476

12-3462

English

18p

2012

Transportation Research Board 91st Annual Meeting

Digital/other

Figures; References; Tables

Measurement; Sound intensity; Speed; Standardization; Temperature; Tire/pavement noise

Data and Information Technology; Highways; Pavements; I22: Design of Pavements, Railways and Guideways

Transportation Research Board Annual Meeting 2012 Paper #12-3462

TRIS, TRB

Feb 8 2012 5:16PM